M41ST84W View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M41ST84W

3.0/3.3 V I2C serial RTC with 44 bytes of NVRAM and supervisory functions

STMicroelectronics 

M41ST84W

Figure 1. Logic diagram

VCC VBAT

XI

XO

SCL

SDA

RSTIN

WDI

PFI

M41ST84W

RST

IRQ/FT/OUT

SQW

PFO

Description

VSS

AI03677

Table 1. Signal names

XI

XO

IRQ/FT/OUT

PFI

PFO

RST

RSTIN

SCL

SDA

SQW

WDI

VCC

VBAT

VSS

NC

Oscillator input

Oscillator output

Interrupt/frequency test/out output (open drain)

Power fail input

Power fail output

Reset output (open drain)

Reset input

Serial clock input

Serial data input/output

Square wave output

Watchdog input

Supply voltage

Battery supply voltage

Ground

No connect

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