M41T64LC6F(2019) 데이터 시트보기 (PDF) - STMicroelectronics

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M41T64LC6F
(Rev.:2019)

Low-power serial real-time clocks (RTCs) with alarm

STMicroelectronics 

M41T62, M41T64, M41T65

Description

Figure 5. M41T64 connections

16 15 14 13

XI 1

12 NC

XO 2

11 SQW(2)

VSS 3

10 SCL

F32K(1) 4

9 SDA

5678

1. Enabled on power-up.

2. Open drain.

Figure 6. M41T65 connections

16 15 14 13

XI 1

12 NC

XO 2

11 IRQ/FT/OUT(1)

VSS 3

10 SCL

WDO(1) 4

9 SDA

5678

1. Open drain.

XI

XO

SDA

SCL

IRQ /OUT

IRQ /FT/OUT

SQW

F32K

WDO

VCC

VSS

Table 2. Signal names

Oscillator input

Oscillator output

Serial data input/output

Serial clock input

Interrupt or OUT output (open drain)

Interrupt, frequency test, or OUT output (open drain)

Programmable square wave - defaults to 32 kHz on power-up (open drain for M41T64 only)

Dedicated 32 kHz output (M41T64 only)

Watchdog timer output (open drain)

Supply voltage

Ground

DS3840 - Rev 24

page 4/42

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