M41T315Y Просмотр технического описания (PDF) - STMicroelectronics

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M41T315Y

Serial access phantom RTC supervisor

STMicroelectronics 

M41T315Y

M41T315V, M41T315W

Serial access phantom RTC supervisor

Not For New Design

Features

■ 3.0V, 3.3V, or 5V operating voltage

■ Real-time clock keeps track of

tenths/hundredths of seconds, seconds,

minutes, hours, days, date of the month,

months, and years

■ Automatic leap year correction valid up to 2100

■ Automatic switch-over and deselect circuitry

■ Choice of power-fail deselect voltages:

(VPFD = power-fail deselect voltage)

– M41T315Y(a): VCC = 4.5 to 5.5V

4.25V ≤ VPFD ≤ 4.50V

– M41T315V: VCC = 3.0 to 3.6V

2.80V ≤ VPFD ≤ 2.97V

– M41T315W: VCC = 2.7 to 3.3V

2.60V ≤ VPFD ≤ 2.70V

■ No address space required to communicate

with RTC

■ Provides nonvolatile supervisor functions for

battery backup of SRAM

■ Full ±10% VCC operating range

■ Industrial operating temperature range (–40 to

+85°C)

■ Ultra-low battery supply current of 500nA (max)

■ Optional packaging includes A 28-lead SOIC

and SNAPHAT® top (to be ordered separately)

■ SNAPHAT package provides direct connection

for a snaphat top, which contains the battery

and crystal

■ RoHS compliant

– Lead-free second level interconnect

16

1

SO16 (MQ)

SNAPHAT (SH)

battery & crystal

28

1

SOH28 (MH)

a. Contact local ST sales office for availability.

November 2007

Rev 3

This is information on a product still in production but not recommended for new designs.

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