M41ST87W_11 datasheet(10/54 Pages) STMICROELECTRONICS

Il numero della parte	M41ST87W

Spiegazioni elettronici	5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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10 / 54 page

Description

M41ST87Y, M41ST87W

10/54

Doc ID 9497 Rev 10

Figure 4.

Block diagram

1.

Open drain output.

2.

Programmable output (open drain or full-CMOS); if open drain option is selected and if pulled-up to supply other than VCC,

this supply must be equal to, or less than VBAT when VCC = 0 V (during battery backup mode).

3.

Available in SOX28 package only.

4.

Crystal is external on SSOP package and internal for the SOX28 package.

AI07026

COMPARE

VPFD

VCC

VOUT

COMPARE

VSO

VOUT

VBL

BL

COMPARE

Crystal

(4)

I2C

INTERFACE

REAL TIME CLOCK

CALENDAR

128 BYTES

USER RAM

8 BYTES ROM

RTC w/ALARM

& CALIBRATION

WATCHDOG

SQUARE WAVE

TAMPER

SDA

SCL

1.25V

PFI1

PFI2

PFO1

(2)

PFO2

(2)

RSTIN1

POR

SQW/FT

(2)

RST

(1)

WDI

(3)

TPXIN

WDS

TIEX

CLRX

CLRXEXT

AFE

OFIE

IRQ/OUT

(1)

VBAT

32KHz

OSCILLATOR

TPCLR

F32k

(1)

COMPARE

RSTIN2

(3)

EX

(3)

ECON

(3)

(Internal)

1.25V

(Internal)

VSS

2

XI

XO

(3)

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STMicroelectronics	M41ST87WMX6	733Kb / 42P	5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection
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STMicroelectronics	M41ST87Y	461Kb / 48P	5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
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