M48T201Y datasheet(1/37 Pages) STMICROELECTRONICS

Part #	M48T201Y

Description	5.0 or 3.3 V TIMEKEEPER® supervisor

PDF	37 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 37 page

March 2009

Rev 7

1/37

1

M48T201Y

M48T201V

5.0 or 3.3 V TIMEKEEPER® supervisor

Features

■ Converts low power SRAM into NVRAMs

■ Year 2000 compliant

■ Battery low flag

■ Integrated real time clock, power-fail control

circuit, battery and crystal

■ Watchdog timer

■ Choice of write protect voltages

(VPFD = power-fail deselect voltage):

–M48T201Y: VCC = 4.5 to 5.5 V

4.1V

≤ VPFD ≤ 4.5 V

–M48T201V: VCC = 3.0 to 3.6 V

2.7 V

≤ VPFD ≤ 3.0 V

■ Microprocessor power-on reset (valid even

during battery backup mode)

■ Programmable alarm output active in the

battery backed-up mode

■ Packaging includes a 44-lead SOIC and

SNAPHAT® top (to be ordered separately)

■ SOIC package provides direct connection for a

SNAPHAT® top which contains the battery and

crystal

■ RoHS compliant

– Lead-free second level interconnect

44

1

SOH44 (MH)

44-pin SOIC

SNAPHAT® (SH)

crystal/battery

www.st.com

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