DS1385 Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS1385

RAMified Real Time Clock 4K x 8

Dallas Semiconductor -> Maxim Integrated 

DS1385/DS1387 BLOCK DIAGRAM Figure 1

X1 X2

OSC

DS1385/DS1387

8

64

64

CS

VCC

POWER

SWITCH

VCC

AND

WRITE

PROTECT

POK

VBAT

+

+3V –

BUFFER

ENABLE

ALE

RD

WR

CS

AD0-AD7

BUS

INTERFACE

AS1

AS0

WER

OER

PERIODIC INTERRUPT/SQUARE WAVE

SELECTOR

SQUARE

WAVE OUT

SQW

CLOCK/

CALENDAR

UPDATE

BCD/BINARY

INCREMENT

CONTROL

REGISTERS A, B, C, D

CLOCK, CALENDAR,

AND ALARM

IRQ

DOUBLE

BUFFERED

USER RAM

50 BYTES

ADDRESS HIGH

BYTE LATCH

ADDRESS LOW

BYTE LATCH

DATA LATCH

NONVOLATILE RAM

4K X 8

012496 3/20

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