M48T35AV_11 Datasheet, PDF (1/29 Pages) STMicroelectronics – 3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER® SRAM

M48T35AV
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
■ BYTEWIDE^™ RAM-like clock access
■ BCD coded year, month, day, date, hours,
minutes, and seconds
■ Battery low flag (BOK)
■ Frequency test output for real-time clock
■ Automatic power-fail chip deselect and WRITE
protection
■ WRITE protect voltage
(V_PFD = power-fail deselect voltage):
– M48T35AV: V_CC = 3.0 to 3.6 V;
2.7 V ≤ V_PFD ≤ 3.0 V
■ Self-contained battery and crystal in the
CAPHAT^™ DIP package
■ SOIC package provides direct connection for a
SNAPHAT^® housing containing the battery and
crystal
■ SNAPHAT^® housing (battery and crystal) is
replaceable
■ Pin and function compatible with JEDEC
standard 32 Kbit x 8 SRAMs
■ RoHS compliant
– Lead-free second level interconnect
28
1
PCDIP28
battery/crystal
CAPHAT™
SNAPHAT^®
battery/crystal
28
1
SOH28
June 2011
Doc ID 6845 Rev 9
1/29
www.st.com
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