M41T83 查看數據表（PDF） - STMicroelectronics

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M41T83

Serial RTC with battery switchover

STMicroelectronics 

Clock operation

M41T82 M41T83

Table 5. Key to Table 4 (M41T83 clock/control register map (32 bytes))

Code

Explanation

0

Must be set to zero

ABE

Alarm in battery back-up Enable bit

A1IE, A2IE

AC0-AC6

Alarm Interrupt Enable bits

Analog Calibration bits

ACS

Analog Calibration Sign bit

AF1, AF2

Alarm Flag

AL2E

Alarm 2 Enable bit

BL

BMB0-BMB4

Battery Low bit

Watchdog Multiplier bits

CB0, CB1

Century bits

DC0-DC4

Digital Calibration bits

DCS

FT

Digital Calibration Sign bit

Frequency Test bit

HT

Halt Update bit

OF

Oscillator Fail bit

OUT

Output level

OFIE

OTP

Oscillator Fail Interrupt Enable

OTP Control bit

RB0-RB2

Watchdog Resolution bits

RPT11-RPT15

Alarm 1 Repeat Mode bits

RPT21-RPT25

RS0-RS3

Alarm 2 Repeat Mode bits

SQW frequency

SQWE

Square Wave Enable

SRAM/ALM2

SRAM/Alarm 2 bit

ST

Stop bit

TD0, TD1

TE

Timer Frequency bits

Timer Enable bit

TF

Timer Flag

TI/TP

Timer Interrupt or Pulse

TIE

WDF

Timer Interrupt Enable

Watchdog Flag

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