Page 85
TMP89FM42
RA002
Figure 7-4 STOP Mode Release by VDCR1<VDxSF>
7.4
Register Settings
7.4.1
Setting procedure when the operation mode is set to generate voltage detection
interrupt request signals
When the operation mode is set to generate voltage detection interrupt request signal, make the following
setting:
In this case, setting VDCR2<SRSS> allows STOP mode to be released when the supply voltage (VDD)
becomes equal to or higher than the detection voltage (VDxLVL).
1. Clear the voltage detection circuit interrupt enable flag to "0".
2. Set the detection voltage at VDCR1<VDxLVL>(x=1 to 2).
3. Clear VDCR2<VDxMOD> to "0" to set the operation mode to generate voltage detection interrupt
request signals.
4. Set VDCR2<VDxEN> to "1" to enable the voltage detection operation.
5. Wait for 5 [us] or more until the voltage detection circuit becomes stable.
6. Make sure that VDCR1<VDxSF> is "0".
7. Clear the voltage detection circuit interrupt latch to "0" and set the interrupt enable flag to "1" to
enable interrupts.
Note:If the set value of detection voltage (VDxLVL) is close to the supply voltage (VDD), voltage detection request
signals may be generated frequently. At the return from the voltage detection interrupt processing, execute
appropriate wait processing depending on fluctuations in the system power supply and clear the interrupt
latch.
7.4.2
Setting procedure when the operation mode is set to generate voltage detection
reset signals
When the operation mode is set to generate voltage detection reset signals, make the following setting:
1. Clear the voltage detection circuit interrupt enable flag to "0".
2. Set the detection voltage at VDCR1<VDxLVL>(x=1 to 2).
3. Clear VDCR2<VDxMOD> to "0" to set the operation mode to generate voltage detection interrupt
request signals.
4. Set VDCR2<VDxEN> to "1" to enable the voltage detection operation.
5. Wait for 5 [us] or more until the voltage detection circuit becomes stable.
6. Make sure that VDCR1<VDxSF> is "0".
7. Set VDCR2<VDxMOD> to "1" to set the operation mode to generate voltage detection reset signals.
Note 1: VDCR1 and VDCR2 are initialized by a power-on reset or an external reset input only. If the supply voltage
(VDD) becomes lower than the detection voltage (VDxLVL) in the period from release of the voltage detec-
tion reset until clearing of VDCR2<VDxEN> to "0", a voltage detection reset signal is generated immedi-
ately.
Detection voltage level
Voltage detection interrupt
request signal
STOP mode is released at the falling
edge of VDCR1<VDxSF>
VDD level
VDCR1<VDxSF>
STOP mode is released at the falling
edge of VDCR1<VDxSF>
NORMAL mode
NORMAL mode
STOP mode
STOP mode is
activated by
programming.
STOP mode is
activated by
programming.
STOP mode
Warm-up
NORMAL mode
Warm-up
Содержание TLCS-870/C1 Series
Страница 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Страница 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Страница 4: ......
Страница 14: ......
Страница 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Страница 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Страница 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Страница 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Страница 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Страница 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Страница 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Страница 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Страница 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Страница 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Страница 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Страница 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Страница 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Страница 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Страница 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Страница 336: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 Note 1 Make sure that you set the C register to 0x00 LD FLSCR2 0xD5 ...
Страница 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Страница 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Страница 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Страница 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Страница 406: ...26 Package Dimensions TMP89FM42 ...
Страница 408: ......