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9

AN1176.0

June 20, 2005

LED1

RED SM LED

1206 LED

Red Low Current LED 

Surface Mount

Lumex

SML-LX23IC-TR

*

*

LED2

GREEN SM 

LED

1206 LED

Green Low Current 

LED Surface Mount

Lumex

SML-LX23GC-TR

*

*

LED3

YELLOW SM 

LED

1206 LED

Yellow Low Current 

LED Surface Mount

Lumex

SML-LX23YC-TR

M1

SI3443BDV

TSOP-6

P-channel MOSFET

Siliconix

SI3443BDV

*

*

R1

470

1206

1/8W 5% Carbon 

Comp. Surface Mount

680

*

*

R10

2.2K

1206

Resistor

*

*

R11

200K

1206

Resistor

*

*

R12

130K

1206

Resistor

*

*

R13

20K

1206

Resistor

*

*

R14

100K

1206

Resistor

*

*

R15

100K

1206

Resistor

*

*

R16

100K

1206

Resistor

*

*

R17

100K

1206

Resistor

*

*

R18

47K

1206

Resistor

*

*

R2

10K

1206

*

*

R3

27

1206

*

*

R4

27

1206

*

*

R5

470

1206

*

*

R6

330

1206

470

*

*

R7

330

1206

Resistor

*

*

R8

1.5K

1206

*

*

R9

2.2K

1206

Resistor

*

*

U1

PIC16C63A

SDIP28

PIC 16C63 8-bit 

CMOS Microcontroller 

Through Hole

Socket

28-DIP x 0.3"

Microchip

PIC16C63A-04/SP

U2

ICL7663CBA

LSOIC8

Dual Mode 5V 

Programmable 

Micropower Voltage 

Regulators

Intersil

*

U3

FT232BM

QUAD32

USB to Serial 

Converter

FTDI

FT232BM

U4

X40411-A

MSOP8

Dual Supply Monitor 

with 4K EEPROM

Intersil

X40411IV8-A

X1

CTS 

3.57954MHZ

XTAL_1

3.579545MHz 18pF 

Crystal Surface Mount

DigiKey

CTX400-ND

CTS

MP036S

Y1

6MHz

XTAL_1

Crystal

DigiKey

CTX405-ND

CTS

MP060

SH1 - SH4

Shunts

0.1"

0.1" Shunt, Closed 

Top, Tin Plated

DigiKey

Molex

15-38-1026

RTC Motherboard Bill of Materials

 (Continued)

DESIGNATOR

PART TYPE

FOOTPRINT

DESCRIPTION

MFR

PART #

MFR

PART NUMBER

Application Note 1176

Summary of Contents for ISL1208

Page 1: ...e is a decoupling capacitor on the daughtercard 0 1 F which must discharge fully before the RTC device stops operating This discharge time can be up to one second when using a VCC of 5V Note that when...

Page 2: ...creases During Polling the temperature of the daughtercard is displayed and updated once per second as well The ATR register is also displayed but will likely not change unless Temperature Compensatio...

Page 3: ...test the EVT bit If the EVT bit is set to 1 then the software will read and display the time of the event DISABLE EVENT MODE Disables the Event Mode Resets the EVEN EVENx and ESMPx bits to 0 and stops...

Page 4: ...ace which connects to the FDTI USB device There is a dedicated I2C serial interface connected to the Intersil RTC device EEPROM and the temperature sensor The power for the microcontroller comes from...

Page 5: ...d by adding a series ammeter to JP1 D1 provides visual indication of IRQ FOUT status and at low frequencies it will indicate that FOUT is enabled At higher FOUT frequencies it is possible to monitor t...

Page 6: ...n The event pin needs to be held to ground normally closed in order to detect an event Software and USB Troubleshooting Keep in mind that the RTC_USB board uses a serial to USB converter to communicat...

Page 7: ...unter resolution to get one PPM of accuracy 4 Test the ICC An ammeter can be connected in series with the JP1 terminals to monitor the VCC supply current to the device Note that when using the softwar...

Page 8: ...il the write is accepted by the device RTC Motherboard Bill of Materials DESIGNATOR PART TYPE FOOTPRINT DESCRIPTION MFR PART MFR PART NUMBER BT1 CR2032 Socket BATTX Battery and Socket MPD BS 3 ND Pana...

Page 9: ...6 R3 27 1206 R4 27 1206 R5 470 1206 R6 330 1206 470 R7 330 1206 Resistor R8 1 5K 1206 R9 2 2K 1206 Resistor U1 PIC16C63A SDIP28 PIC 16C63 8 bit CMOS Microcontroller Through Hole Socket 28 DIP x 0 3 Mi...

Page 10: ...XTL_206 Crystal Epson SE2406CT ND MC 206 32 768KA A2 U1 X1208 SO 8 RTC Intersil ISL1208S8I ISL1209 Bill of Materials DESIGNATOR PART TYPE FOOTPRINT DESCRIPTION MFR MFR PART NUMBER PART NUMBER C1 0 1 F...

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