M41T93SMY6F データシートの表示（PDF） - STMicroelectronics

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M41T93SMY6F

Serial SPI bus RTC with battery switchover

STMicroelectronics 

M41T93

Figure 4. Block diagram

CRYSTAL

E

SDI

SCL

SDO

XI

32kHz

OSCILLATOR

XO

SPI

INTERFACE

WRITE

PROTECT

VCC < VRST

VCC

VBAT

VRST/VSO(2) COMPARE

1. Open drain output

2. VRST = VSO = 2.93V (S), 2.63V (R), and 2.32V (Z).

REAL TIME CLOCK

CALENDAR

OSCILLATOR FAIL

CIRCUIT

ALARM1

ALARM2

OFIE

A1IE

WATCHDOG

FT

FREQUENCY TEST

OUTPUT DRIVER

8-BIT COUNTER

SQUARE WAVE

OUT

TIE

SQWE

8 BITS OF OTP

USER SRAM (7 Bytes)

INTERNAL

POWER

trec

TIMER

Description

IRQ/FT/OUT(1)

SQW

RST(1)

AI11821

9/51

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