M48T37Y datasheet(1/30 Pages) STMICROELECTRONICS

Part #	M48T37Y

Description	5.0 or 3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER짰 SRAM

PDF	30 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 30 page

August 2010

Doc ID 7019 Rev 9

1/30

1

M48T37Y

M48T37V

5.0 or 3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER® SRAM

Features

■ Integrated ultra low power SRAM, real-time

clock, power-fail control circuit, and battery

■ Frequency test output for real-time clock

software calibration

■ Automatic power-fail chip deselect and WRITE

protection

■ Watchdog timer

■ WRITE protect voltage

(VPFD = Power-fail deselect voltage):

–M48T37Y: VCC = 4.5 to 5.5 V

4.2 V

≤ VPFD ≤ 4.5 V

–M48T37V: VCC = 3.0 to 3.6 V

2.7 V

≤ VPFD ≤ 3.0 V

■ 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

■ Microprocessor power-on reset (valid even

during battery backup mode)

■ Programmable alarm output active in the

battery backup mode

■ Battery low flag

■ RoHS compliant

– Lead-free second level interconnect

44

1

SNAPHAT® (SH)

Battery/crystal

SOH44 (MH)

44-pin SOIC

www.st.com

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M48T37Y Datasheet(PDF) 1 Page - STMicroelectronics

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