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100

RabbitCore RCM4100

The drain on the battery by the RCM4110 is typically 7.5 µA when no other power is sup-
plied. If a 165 mA·h battery is used, the battery can last about 2.5 years:

The actual battery life in your application will depend on the current drawn by components 
not on the RCM4100 series of modules and on the storage capacity of the battery. The 
RCM4100 series of modules does not drain the battery while it is powered up normally.

Cycle the main power off/on after you install a backup battery for the first time, and when-
ever you replace the battery. This step will minimize the current drawn by the real-time 
clock oscillator circuit from the backup battery should the RCM4100 experience a loss of 
main power.

NOTE:

Remember to cycle the main power off/on any time the RCM4100 is removed 

from the Prototyping Board or motherboard since that is where the backup battery 
would be located.

Rabbit’s Technical Note TN235, 

External 32.768 kHz Oscillator Circuits

, provides addi-

tional information about the current draw by the real-time clock oscillator circuit.

C.1.2  Battery-Backup Circuit

Figure C-2 shows the battery-backup circuit.

Figure C-2.  RCM4100 Backup Battery Circuit

The battery-backup circuit serves three purposes:

•

It reduces the battery voltage to the SRAM and to the real-time clock, thereby limiting 
the current consumed by the real-time clock and lengthening the battery life.

•

It ensures that current can flow only 

out

 of the battery to prevent charging the battery.

•

A voltage, VOSC, is supplied to U6, which keeps the 32.768 kHz oscillator working 
when the voltage begins to drop.

C.1.3  Reset Generator

The RCM4100 series of modules uses a reset generator to reset the Rabbit 4000 micropro-
cessor when the voltage drops below the voltage necessary for reliable operation. The 

165 mA·h

7.5 µA

------------------------

2.5 years.

=

VRAM

47 k

W

R16

VBAT-EXT

External Battery

R19

47 k

W

VOSC

D1

47 k

W

R17

C23

10 nF

Содержание RabbitCore RCM4100

Страница 1: ...RabbitCore RCM4100 C Programmable Core Module User s Manual 019 0153 090508 G...

Страница 2: ...c Rabbit 4000 and RabbitCore are trademarks of Digi International Inc No part of the contents of this manual may be reproduced or transmitted in any form or by any means without the express written pe...

Страница 3: ...3 1 Troubleshooting 12 2 4 Where Do I Go From Here 13 2 4 1 Technical Support 13 Chapter 3 Running Sample Programs 15 3 1 Introduction 15 3 2 Sample Programs 16 3 2 1 Serial Communication 18 3 2 2 A...

Страница 4: ...Headers 73 A 2 Rabbit 4000 DC Characteristics 74 A 3 I O Buffer Sourcing and Sinking Limit 75 A 4 Bus Loading 75 A 5 Jumper Configurations 78 A 6 Conformal Coating 80 Appendix B Prototyping Board 81...

Страница 5: ...ins a Prototyping Board that will allow you to evaluate the RCM4100 series and to prototype circuits that interface to the RCM4100 series of modules You will also be able to write and test software fo...

Страница 6: ...lternate functions 3 3 V I O lines with low power modes down to 2 kHz Six CMOS compatible serial ports four ports are configurable as a clocked serial port SPI and two ports are configurable as SDLC H...

Страница 7: ...0 RCM4120 Microprocessor Rabbit 4000 at 58 98 MHz Rabbit 4000 at 29 49 MHz Rabbit 4000 at 58 98 MHz Flash Memory 512K Data SRAM 512K 256K 512K Fast Program Execution SRAM 512K 512K A D Converter 12 bi...

Страница 8: ...compared with the alternative of purchasing and assembling individual components Easy C language program development and debugging Rabbit Field Utility to download compiled Dynamic C bin files and clo...

Страница 9: ...s and washers A bag of accessory parts for use on the Prototyping Board Rabbit 4000 Processor Easy Reference poster Registration card Visit our online Rabbit store at www rabbit com store for the late...

Страница 10: ...ers for purchase the Rabbit Embedded Security Pack featuring the Secure Sockets Layer SSL and a specific Advanced Encryption Standard AES library In addition to the Web based technical support include...

Страница 11: ...ion program will guide you through the installation process Most steps of the process are self explanatory Dynamic C uses a COM serial port to communicate with the target development system The instal...

Страница 12: ...3 RX11 C X 39 UX30 UX10 UX12 UX14 UX16 RX79 C X 29 C X 17 RX67 U X 45 R X 85 GND GND GND 1 R24 R22 R21 R23 CX23 RX77 1 R 27 R 28 JP25 CX25 RX75 RX73 CX27 DS3 S3 S2 DS2 J3 UX49 UX4 UX47 5 V GND 3 3 V R...

Страница 13: ...RX83 RX11 CX39 UX30 UX10 UX12 UX14 UX16 RX79 CX29 CX17 RX67 UX45 RX85 GND GND GND 1 R24 R22 R21 R23 CX23 RX77 1 R27 R28 JP25 CX25 RX75 RX73 CX27 DS3 S3 S2 DS2 J3 UX49 UX4 UX47 5 V GND 3 3 V RCM1 U2 RS...

Страница 14: ...30 UX10 UX12 UX14 UX16 RX79 CX29 CX17 RX67 UX45 RX85 GND GND GND 1 R24 R22 R21 R23 CX23 RX77 1 R27 R28 JP25 CX25 RX75 RX73 CX27 DS3 S3 S2 DS2 J3 UX49 UX4 UX47 5 V GND 3 3 V RCM1 U2 RST_OUT IOWR VBAT E...

Страница 15: ...he plug assembly into the slot at the top of the AC adapter as shown in Figure 4 then press down on the plug until it clicks into place Connect the AC adapter to 3 pin header J1 on the Prototyping Boa...

Страница 16: ...ging the maximum download rate to a slower baud rate as follows Locate the Serial Options dialog in the Dynamic C Options Project Options Communications menu Select a slower Max download baud rate If...

Страница 17: ...typing Board For advanced development topics refer to the Dynamic C User s Manual also in the online documentation set which is on the Dynamic C CD in a docs folder 2 4 1 Technical Support NOTE If you...

Страница 18: ...14 RabbitCore RCM4100...

Страница 19: ...es of the Dynamic C User s Manual for a sug gested reading list In order to run the sample programs discussed in this chapter and elsewhere in this manual 1 Your module must be plugged in to the Proto...

Страница 20: ...ar in the Dynamic C STDIO window Press 2 or 3 on your keyboard to select LED DS2 or DS3 on the Prototyping Board Then follow the prompt in the Dynamic C STDIO window to turn the LED ON or OFF A logic...

Страница 21: ...ttery backed onchip encryption RAM and how to enable a visual indicator Once this sample is compiled running you have pressed the F9 key while the sample program is open remove the programming cable a...

Страница 22: ...tedly sending byte values 0 127 from Serial Port C to Serial Port D The program will switch between generating parity or not on Serial Port C Serial Port D will always be checking parity so parity err...

Страница 23: ...IO window and will display again once TxD is connected back to RxD If you have two Prototyping Boards with modules run this sample program on the sending board then disconnect the programming cable an...

Страница 24: ...figuration using Parallel Port C bits PC0 and PC1 These signals are available on the Prototyping Board s RS 232 connector header J4 Serial Port D transmits and then receives an ASCII string with Seria...

Страница 25: ...ed with this sample program NOTE The above sample program will overwrite the existing calibration constants for the selected channel AD_RDVOLT_ALL C Demonstrates how to read all single ended A D input...

Страница 26: ...so need to connect the RS 232 header at J4 to your PC as shown in the diagram using the serial to DB9 cable supplied in the Development Kit DNLOADCALIB C Demonstrates how to retrieve analog calibratio...

Страница 27: ...al Echo option Feed options Receive CR Transmit CR LF Enable the File APPEND option at the bottom of the dialog box Select the OPEN option at the right hand side of the dialog box Serial port transmis...

Страница 28: ...on you will need to set the real time clock Set the real time clock using the SETRTCKB C sample program from the Dynamic C SAMPLES RTCLOCK folder using the onscreen prompts The RTC_TEST C sample progr...

Страница 29: ...RCM4100 Specifi cations provides complete physical and electrical specifications Figure 5 shows the Rabbit based subsystems designed into the RCM4100 Figure 5 RCM4100 Subsystems SRAM Flash RabbitCore...

Страница 30: ...nominal 1 27 mm pitch Note These pinouts are as seen on the Bottom Side of the module 3 3 V_IN RESET_OUT IOWR VBAT_EXT PA1 PA3 PA5 PA7 PB1 PB3 PB5 PB7 PC1 PC3 PC5 PC7 PE1 PE3 PE5 SMODE0 PE7 STATUS PD1...

Страница 31: ...le 2 lists the Rabbit 4000 factory defaults and the alternate configurations RABBIT 4000 Port A Port B Port D Port E PA0 PA7 PB2 PB7 PE0 PE7 PD0 PD7 Watchdog 11 Timers Clock Doubler Slave Port Real Ti...

Страница 32: ...attery input 8 15 PA 0 7 Input Output Slave port data bus SD0 SD7 External I O data bus ID0 ID7 16 PB0 Input Output SCLKB External I O Address IA6 CLKB 17 PB1 Input Output SCLKA External I O Address I...

Страница 33: ...Timer C3 SCLKD Input Capture 28 PC4 Input Output TXB I O Strobe I4 PWM0 TCLKE Serial Port B 29 PC5 Input Output RXB TXB I O Strobe I5 PWM1 RCLKE Input Capture 30 PC6 Input Output TXA TXE I O Strobe I...

Страница 34: ...Input Output I O Strobe I4 INT0 PWM0 TCLKE 37 PE5 SMODE0 Input Output I O Strobe I5 INT1 PWM1 RXB RCLKE Input Capture PE5 is the default configuration 38 PE6 SMODE1 Input Output I O Strobe I6 PWM2 TX...

Страница 35: ...REQ0 TXF SCLKC QRD2B 43 PD3 Input Output IA7 I O Strobe I3 Timer C3 DREQ1 RXC RXF QRD2A Input Capture 44 PD4 Input Output I O Strobe I4 PWM0 TXB TCLKE 45 PD5 Input Output IA6 I O Strobe I5 PWM1 RXB RC...

Страница 36: ...lel Ports D and E as specified in Table 2 may be used for input capture quadrature decoder DMA and pulse width modulator purposes 4 1 2 Other Inputs and Outputs The status and the two SMODE pins SMODE...

Страница 37: ...g in the Run Mode Serial Port B is shared by the RCM4100 module s A D converter and is set up as a clocked serial port Since this serial port is set up for synchronous serial communication on the RCM4...

Страница 38: ...our motherboard or use a receiver that incorporates the circuits to have the output default to the nonbreak levels The Dynamic C RS232 LIB library requires you to define the macro RS232_NOCHARASSYINBR...

Страница 39: ...l port via the DIAG connector on the programming cable In addition to Serial Port A the Rabbit 4000 startup mode SMODE0 SMODE1 status and reset pins are available on the programming port The two start...

Страница 40: ...1 PWR DS1 GND J1 U1 C1 GND C2 JP1 C3 D2 JP2 C4 3 3 V J2 R2 BT1 1 S1 RESET RXD TXD TXC RXC GND J4 UX29 RX81 RX87 CX41 RX83 RX11 CX39 UX30 UX10 UX12 UX14 UX16 RX79 CX29 CX17 RX67 UX45 RX85 GND GND GND 1...

Страница 41: ...connector and reset the RCM4100 series module The module may be reset by cycling the power off on or by pressing the RESET button on the Prototyping Board The module may now be removed from the Protot...

Страница 42: ...istance leading to more accuracy but at the expense of a higher current draw The R0 resistors would then be 180 k to 900 k for a 10 1 attenuator The capacitor filters noise pulses on the A D converter...

Страница 43: ...ed output current capability The internal buffer can source up to 20 mA and sink only up to 200 A Use a separate buffer amplifier if you need to supply any load current The A D converter s CONVERT pin...

Страница 44: ...n is isolated from digital noise generated by other components by way of a low pass filter composed of L1 C1 and C2 on the RCM4100 as shown in Figure 12 The V analog power supply powers the A D conver...

Страница 45: ...ing setting and the maximum clock speed 1 Select the Defines tab from the Dynamic C Options Project Options menu 2 Normal spreading is the default and usually no entry is needed If you need to specify...

Страница 46: ...led at U11 NOTE Rabbit recommends that any customer applications should not be constrained by the sector size of the flash EPROM since it may be necessary to change the sector size in the future Writi...

Страница 47: ...sh memory and SRAM options are selected with the Options Program Options Compiler menu The advantage of working in RAM is to save wear on the flash memory which is limited to about 100 000 write cycle...

Страница 48: ...ndard debugging features X Breakpoints Set breakpoints that can disable interrupts X Single stepping Step into or over functions at a source or machine code level C OS II aware X Code disassembly The...

Страница 49: ...it by transmission gaps or with user defined special characters Both libraries provide blocking functions which do not return until they are finished transmitting or receiving and nonblocking function...

Страница 50: ...how a protected variable is defined and how its value can be restored main protected int state1 state2 state3 _sysIsSoftReset restore any protected variables Additional information on protected varia...

Страница 51: ...applicable to all devices based on Rabbit microprocessors are described in the Dynamic C Function Reference Manual 5 2 4 1 Board Initialization brdInit void brdInit void DESCRIPTION Call this functio...

Страница 52: ...the duration of the timeout in seconds RETURN VALUE None digInAlert void digInAlert int dataport int portbit int value unsigned long timeout DESCRIPTION Polls a digital input for a set value or until...

Страница 53: ...S7870 Signal ADS7870 State RCM4100 Function State LN0 Input AIN0 LN1 Input AIN1 LN2 Input AIN2 LN3 Input AIN3 LN4 Input AIN4 LN5 Input AIN5 LN6 Input AIN6 LN7 Input AIN7 RESET Input Board reset device...

Страница 54: ...registers addressed by the in struction byte Enter 0 if you are performing a read operation For example i anaInConfig 0x07 0x3b 0 write ref osc reg and enable brate the serial clock transfer rate of 9...

Страница 55: ...erter oscillator have been enabled See anaIn Config for the setup The conversion begins immediately after the last data bit has been transferred An ex ception error will occur if Direct Mode bit D7 is...

Страница 56: ...FLOW 4096 for overflow or out of range SEE ALSO anaInConfig anaIn brdInit Channel Code Differential Input Lines Channel Code Single Ended Input Lines Negative input is ground 4 20 mA Lines 0 AIN0 AIN1...

Страница 57: ...sponding to LN0 to LN7 opmode the mode of operation SINGLE single ended input DIFF differential input mAMP 4 20 mA input gaincode the gain code of 0 to 7 applies only to Prototyping Board channel SING...

Страница 58: ...g to the voltage on the analog input channel 0 2047 for single ended conversions 2048 2047 for differential conversions ADTIMEOUT 4095 if the conversion is incomplete or busy bit timeout ADOVERFLOW 40...

Страница 59: ...CalibM to be later stored into simulat ed EEPROM using the function anaInEEWr Each channel will have a linear con stant and a voltage offset PARAMETERS channel the channel number 0 to 7 corresponding...

Страница 60: ...0 mA value2 the second A D converter channel raw count value 0 2047 volts2 the voltage or current corresponding to the first A D converter channel value 0 to 20 V or 4 to 20 mA RETURN VALUE 0 if succe...

Страница 61: ...0 to LN7 gaincode the gain code of 0 to 7 applies only to Prototyping Board Channel Code Single Ended Input Lines Negative input is ground Voltage Range V Applies to Prototyping Board 0 AIN0 0 22 5 1...

Страница 62: ...RETURN VALUE A voltage value corresponding to the voltage on the analog input channel ADTIMEOUT 4095 if the conversion is incomplete or busy bit timeout ADOVERFLOW 4096 for overflow or out of range SE...

Страница 63: ...rresponding to LN0 to LN7 gaincode the gain code of 0 to 7 applies only to Prototyping Board channel DIFF Voltage Range V 0 AIN0 AIN1 22 5 to 22 5 Accessible on Prototyping Board 1 AIN1 AIN1 2 AIN2 AI...

Страница 64: ...VALUE A voltage value corresponding to the voltage differential on the analog input channel ADTIMEOUT 4095 if the conversion is incomplete or busy bit timeout ADOVERFLOW 4096 for overflow or out of ra...

Страница 65: ...to 7 corresponding to LN0 to LN7 RETURN VALUE A current value between 4 00 and 20 00 mA corresponding to the current on the analog input channel ADTIMEOUT 4095 if the conversion is incomplete or busy...

Страница 66: ...start of single ended analog input channels ADC_CALIB_ADDRD address start of differential analog input channels ADC_CALIB_ADDRM address start of milliamp analog input channels NOTE This function cann...

Страница 67: ...s ignored when channel is ALLCHAN RETURN VALUE 0 if successful 1 if address is invalid or out of range SEE ALSO anaInEEWr anaInCalib Gain Code Gain Multiplier Voltage Range V Applies to Prototyping Bo...

Страница 68: ...log input channels ADC_CALIB_ADDRD address start of differential analog input channels ADC_CALIB_ADDRM address start of milliamp analog input channels NOTE This function cannot be run in RAM PARAMETER...

Страница 69: ...s ignored when channel is ALLCHAN RETURN VALUE 0 if successful 1 if address is invalid or out of range SEE ALSO anaInEEWr anaInCalib Gain Code Gain Multiplier Voltage Range V Applies to Prototyping Bo...

Страница 70: ...ime operating system point to point protocol PPP FAT file system RabbitWeb and other select libraries Rabbit also offers for purchase the Rabbit Embedded Security Pack featuring the Secure Sockets Lay...

Страница 71: ...User s Manual 67 APPENDIX A RCM4100 SPECIFICATIONS Appendix A provides the specifications for the RCM4100 series of modules and describes the conformal coating...

Страница 72: ...gram later in this appendix for precise header locations 2 0 125 dia 3 2 R1 J1 R2 R5 R4 R3 JP1 JP2 JP9 JP6 JP7 JP3 JP5 JP4 C4 C3 C2 L1 C1 R7 R8 R6 R10 R9 U1 U2 R11 C15 RP2 C16 C17 D1 R27 RP1 R15 C23 R...

Страница 73: ...incorporated into an assembly that includes other printed circuit boards An exclusion zone of 0 08 2 mm is recom mended below the RCM4100 module when the RCM4100 is plugged into another assem bly Figu...

Страница 74: ...pose I O 29 parallel digital I 0 lines configurable with four layers of alternate functions 40 parallel digital I 0 lines configurable with four layers of alternate functions Additional Inputs Startup...

Страница 75: ...cascadable from the first one 10 bit timer with 2 match registers and one 16 bit timer with 4 outputs and 8 set reset registers Watchdog Supervisor Yes Pulse Width Modulators 4 channels synchronized...

Страница 76: ...Characteristics Input Capacitance Input Impedance Common Mode Differential Mode 4 9 7 pF 6 M 7 M Static Accuracy Resolution Single Ended Mode Differential Mode Integral Linearity Differential Linearit...

Страница 77: ...spacing J1 the programming port is a 2 5 header with a 1 27 mm pin spacing Figure A 3 shows the layout of another board for the RCM4100 to be plugged into These reference design values are relative t...

Страница 78: ...from TA 40 C to 85 C VDDIO 3 0 V to 3 6 V Table A 3 Rabbit 4000 Absolute Maximum Ratings Symbol Parameter Maximum Rating TA Operating Temperature 40 to 85 C TS Storage Temperature 55 to 125 C VIH Max...

Страница 79: ...to the RCM4100 series of modules This section provides bus loading information for external devices Table A 5 lists the capacitance for the various RCM4100 I O ports Table A 6 lists the external capac...

Страница 80: ...NOTE IOCSx can be programmed to be active low default or active high Tadr Tadr External I O Read no extra wait states CLK A 15 0 External I O Write no extra wait states CLK A 15 0 IORD valid T1 Tw T1...

Страница 81: ...rum spreader is enabled with the clock doubler every other clock cycle is shortened sometimes lengthened by a maximum amount given in the table above The shortening takes place by shortening the high...

Страница 82: ...cted Factory Default JP1 LN0 or PD0 on J2 pin 40 1 2 LN0 RCM4100 2 3 PD0 RCM4110 JP2 LN2 or PD2 on J2 pin 42 1 2 LN2 RCM4100 2 3 PD2 RCM4110 JP3 LN6 or PD6 on J2 pin 46 1 2 LN6 RCM4100 2 3 PD6 RCM4110...

Страница 83: ...K 2 3 256K JP9 LN1 or PD1 on J2 pin 41 1 2 LN1 RCM4100 2 3 PD1 RCM4110 JP10 PE5 or SMODE0 Output on J2 1 2 PE5 2 3 SMODE0 JP11 PE6 or SMODE1 Output on J2 1 2 PE6 2 3 SMODE1 JP12 PE7 or STATUS Output o...

Страница 84: ...be replaced using standard soldering procedures for surface mounted components A new conformal coating should then be applied to offer continuing protection against the effects of moisture and contam...

Страница 85: ...d explains the use of the Prototyping Board to demonstrate the RCM4100 series of modules and to build proto types of your own circuits The Prototyping Board has power supply connections and also provi...

Страница 86: ...CX17 RX67 UX45 RX85 GND GND GND 1 R24 R22 R21 R23 CX23 RX77 1 R27 R28 JP25 CX25 RX75 RX73 CX27 DS3 S3 S2 DS2 J3 UX49 UX4 UX47 5 V GND 3 3 V RCM1 U2 RST_OUT IOWR VBAT EXT PA1 PA3 PA5 PA7 PB1 PB3 PB5 P...

Страница 87: ...sample applications Two LEDs are connected to the PB2 and PB3 pins of the RCM4100 series module and may be driven as output indicators by sample applications Prototyping Area A generous prototyping a...

Страница 88: ...to measure the current drawn from the 5 V supply Similarly you may cut the trace below header JP2 on the bottom side of the Prototyping Board and install a 1 2 header strip from the Development Kit t...

Страница 89: ...PB3 PB5 PB7 PC1 PC3 PC5 PC7 PE1 PE3 PE5 PE7 PD1 LN1 PD3 LN3 PD5 LN5 PD7 LN7 VREF GND IORD RST_IN PA0 PA2 PA4 PA6 PB0 PB2 PB4 PB6 PC0 PC2 PC4 PC6 PE0 PE2 PE4 PE6 PD0 LN0 PD2 LN2 PD4 LN4 PD6 LN6 CVT AGN...

Страница 90: ...Power Supply Table B 1 Prototyping Board Specifications Parameter Specification Board Size 3 80 3 80 0 48 97 mm 97 mm 12 mm Operating Temperature 0 C to 70 C Humidity 5 to 95 noncondensing Input Volta...

Страница 91: ...tuffed a 2 25 header is included in the bag of parts RS 232 signals Serial Ports C and D are available on header J4 A header strip at J4 allows you to connect a ribbon cable and a ribbon cable to DB9...

Страница 92: ...e installed around the prototyping area Table B 2 Use of Rabbit 4000 Signals on the Prototyping Board Pin Pin Name Prototyping Board Use 1 3 3 V 3 3 V power supply 2 GND 3 RST_OUT Reset output from re...

Страница 93: ...current you will have to cut the trace on the bottom side of the Prototyping Board corresponding to the power supply or power supplies whose current draw you will be measuring Header loca tions JP1 an...

Страница 94: ...t the best performance for the A D converter would be realized with 0 resistors Figure B 6 A D Converter Inputs The A D converter chip can make either single ended or differential measurements dependi...

Страница 95: ...ork with single ended negative voltages but the differential mode described below may be used to measure negative voltages Differential measurements require two channels As the name differential impli...

Страница 96: ...e same manner as they are to be used in the application For example if you will be performing floating differential measurements or differential mea surements using a common analog ground then calibra...

Страница 97: ...that Serial Ports E and F can be used only with the Prototyping Board Serial Ports E and F may be used as serial ports or the corresponding pins at header loca tion J2 may be used as parallel ports Ta...

Страница 98: ...function call from RS232 LIB where X is the serial port C or D The locations of the flow control lines are specified using a set of five macros SERX_RTS_PORT Data register for the parallel port that...

Страница 99: ...jumpers or 0 surface mount resistors Table B 6 Prototyping Board Jumper Configurations Header Description Pins Connected Factory Default JP1 5 V Current Measurement 1 2 Via trace or jumper Connected J...

Страница 100: ...buffer filter to RCM4100 1 2 Connected JP14 PB3 LED DS3 1 2 Connected PB3 to LED DS3 n c PB3 available on header J2 JP15 LN2 buffer filter to RCM4100 1 2 Connected JP16 PB4 Switch S2 1 2 Connected PB4...

Страница 101: ...LN0 LN7 signals are useable only when a RabbitCore module with an A D converter is used with the Prototyping Board The RCM4110 and RCM4120 do not have an A D converter JP23 LN4_IN LN6_IN 1 2 Tied to a...

Страница 102: ...98 RabbitCore RCM4100...

Страница 103: ...C 1 1 Battery Backup The RCM4100 series of modules do not have a battery but there is provision for a cus tomer supplied battery to back up the data SRAM and keep the internal Rabbit 4000 real time cl...

Страница 104: ...that is where the backup battery would be located Rabbit s Technical Note TN235 External 32 768 kHz Oscillator Circuits provides addi tional information about the current draw by the real time clock...

Страница 105: ...0 modules will operate at voltages as low as 3 0 V exercise care when operating close to the 3 0 V minimum voltage for example keep the power supply as close as possible to the RCM4100 since your RCM4...

Страница 106: ...102 RabbitCore RCM4100...

Страница 107: ...ourcing and sink ing limits 75 memory interface 32 SMODE0 32 35 SMODE1 32 35 software 45 dimensions Prototyping Board 85 RCM4100 68 Dynamic C 6 7 12 43 add on modules 7 66 installation 7 battery backe...

Страница 108: ...RCM4100 analog inputs 83 adding components 89 dimensions 85 expansion area 83 features 82 83 jumper configurations 95 jumper locations 95 mounting RCM4100 9 pinout 87 power supply 86 prototyping area...

Страница 109: ...l 70 exclusion zone 69 header footprint 73 Prototyping Board 86 Rabbit 4000 DC characteris tics 74 Rabbit 4000 timing dia gram 76 relative pin 1 locations 73 spectrum spreader 41 77 subsystems digital...

Страница 110: ...106 RabbitCore RCM4100...

Страница 111: ...ard Schematic www rabbit com documentation schemat 090 0230 pdf 090 0128 Programming Cable Schematic www rabbit com documentation schemat 090 0128 pdf 090 0252 USB Programming Cable Schematic www rabb...

Страница 112: ......

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