DS1672

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DS1672 BLOCK DIAGRAM Figure 1

ADDRESS MAP

The counter is accessed by reading or writing the first 4 bytes of the DS1672 (00h - 03h). The control

register and trickle charger are accessed by reading or writing the appropriate register bytes as illustrated

in Figure 2. If the master continues to send or request more data after the address pointer has reached

05h, the address pointer will wrap around to location 00h.

DS1672 REGISTERS Figure 2

Address

B7

B6

B5B4B3B2B1B0

Function

00h

Counter

Byte 1

01h

Counter

Byte 2

02h

Counter

Byte 3

03h

Counter

Byte 4

04h

EOSC

Control

05h

TCS

TCS

TCS

TCS

DS

DS

RS

RS

Trickle

Charger

DATA RETENTION MODE

32-BIT

COUNTER

(4 BYTES)

SERIAL BUS

INTERFACE

OSCILLATOR

AND DIVIDER

POWER

CONTROL

ADDRESS

REGISTER

CONTROL

LOGIC

GND

SCL

SDA

CONTROL

TRICKLE CHARGER

X1

X2

RST