M41T93 datasheet(7/49 Pages) STMICROELECTRONICS

部件名	M41T93

功能描述	Serial SPI bus RTC with battery switchover

PDF	49 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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7 / 49 page

M41T93

Summary description

7/49

Figure 1.

Logic diagram

For QFN16 package only.

Defaults to 32kHz on power-up.

Open drain

For QFN16 package only.

Defaults to 32kHz on power-up.

DU pin must be allowed to float (remain unconnected)

Table 1.

Signal name

Symbol

Description

XI(1)

32kHz oscillator input

XO(1)

32kHz oscillator output

IRQ/FT/OUT

Interrupt /frequency test/output driver (open drain)

SQW(2)

32kHz programmable square wave output

RST

Power-on reset output (open drain)

Chip enable

SDI

Serial data address input

SDO

Serial data address output

SCL

Serial clock input

VBAT

Battery supply voltage (Tie VBAT to VSS if no battery is connected.)

DU(3)

Do not use

VCC

Supply voltage

VSS

Ground

SDI

VCC

VSS

VBAT

SCL

RST

(3)

IRQ/OUT/FT

(3)

SQW

(2)

SDO

(1)

AI11818

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