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M48T35_10 Datasheet, PDF (1/28 Pages) STMicroelectronics – 5 V, 256 Kbit (32 Kb x 8) TIMEKEEPER® SRAM | |||
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M48T35
M48T35Y
5 V, 256 Kbit (32 Kb x 8) TIMEKEEPER® SRAM
Features
â Integrated, ultra low power SRAM, real-time
clock, power-fail control circuit and battery
â BYTEWIDE⢠RAM-like clock access
â BCD coded year, month, day, date, hours,
minutes, and seconds
â Frequency test output for real-time clock
â Automatic power-fail chip deselect and WRITE
protection
â WRITE protect voltages
VPFD = Power-fail deselect voltage):
â M48T35: VCC = 4.75 to 5.5 V
4.5 V ⤠VPFD ⤠4.75 V
â M48T35Y: VCC = 4.5 to 5.5 V
4.2 V ⤠VPFD ⤠4.5 V
â Self-contained battery and crystal in the
CAPHAT⢠DIP package
â SOIC package provides direct connection for a
SNAPHAT® housing containing the battery and
crystal
â SNAPHAT® housing (battery and crystal) is
replaceable
â Pin and function compatible with JEDEC
standard 32 Kb x 8 SRAMs
â RoHS compliant
â Lead-free second level interconnect
28
1
PCDIP28 (PC)
Battery/crystal
CAPHATâ¢
SNAPHAT® (SH)
Battery/crystal
28
1
SOH28 (MH)
September 2010
Doc ID 2611 Rev 9
1/28
www.st.com
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