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M48T12 Datasheet

Part Number M48T12
Manufacturers ST Microelectronics
Logo ST Microelectronics
Description 16Kbit (2 Kb x 8) TIMEKEEPER SRAM
Datasheet M48T12 DatasheetM48T12 Datasheet (PDF)

M48T02 M48T12 5.0 V, 16 Kbit (2 Kb x 8) TIMEKEEPER® SRAM Features ■ Integrated, ultra low power SRAM, real-time clock, and power-fail control circuit ■ BYTEWIDE™ RAM-like clock access ■ BCD coded year, month, day, date, hours, minutes, and seconds ■ Typical clock accuracy of ±1 minute a month, at 25 °C ■ Software controlled clock calibration for high accuracy applications ■ Automatic power-fail chip deselect and WRITE protection ■ WRITE protect voltages (VPFD = power-fail deselect voltage): – M.

  M48T12   M48T12






Part Number M48T18
Manufacturers ST Microelectronics
Logo ST Microelectronics
Description 64 Kbit 8Kb x 8 TIMEKEEPER SRAM
Datasheet M48T12 DatasheetM48T18 Datasheet (PDF)

M48T08 M48T08Y, M48T18 5 V, 64 Kbit (8 Kb 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 ■ Typical clock accuracy of ±1 minute a month, at 25 °C ■ Automatic power-fail chip deselect and WRITE protection ■ WRITE protect VPFD = power-fail deselect voltage): – M48T08: VCC = 4.75 to 5.5 V; 4.5 V ≤ VPFD ≤ 4.75 V – M48T18/T08Y: V.

  M48T12   M48T12







Part Number M48T129Y
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description 1Mbit (128 Kbit x 8) TIMEKEEPER SRAM
Datasheet M48T12 DatasheetM48T129Y Datasheet (PDF)

M48T129Y M48T129V 5.0 or 3.3 V, 1 Mbit (128 Kbit x 8) TIMEKEEPER® SRAM Not recommended for new design Features ■ Integrated, ultra low power SRAM, real-time clock, power-fail control circuit, battery, and crystal )■ BCD coded century, year, month, day, date, t(shours, minutes, and seconds c■ Battery low warning flag du■ Automatic power-fail chip deselect and WRITE roprotection P■ Two WRITE protect voltages: te(VPFD = power-fail deselect voltage) le– M48T129Y: VCC = 4.5 to 5.5 V; 4.2 V ≤ VPF.

  M48T12   M48T12







Part Number M48T129V
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description 1Mbit (128 Kbit x 8) TIMEKEEPER SRAM
Datasheet M48T12 DatasheetM48T129V Datasheet (PDF)

M48T129Y M48T129V 5.0 or 3.3 V, 1 Mbit (128 Kbit x 8) TIMEKEEPER® SRAM Not recommended for new design Features ■ Integrated, ultra low power SRAM, real-time clock, power-fail control circuit, battery, and crystal )■ BCD coded century, year, month, day, date, t(shours, minutes, and seconds c■ Battery low warning flag du■ Automatic power-fail chip deselect and WRITE roprotection P■ Two WRITE protect voltages: te(VPFD = power-fail deselect voltage) le– M48T129Y: VCC = 4.5 to 5.5 V; 4.2 V ≤ VPF.

  M48T12   M48T12







Part Number M48T128Y
Manufacturers ST Microelectronics
Logo ST Microelectronics
Description 1-Mbit SRAM
Datasheet M48T12 DatasheetM48T128Y Datasheet (PDF)

M48T128Y 5.0 V, 1 Mbit (128 Kb x 8) TIMEKEEPER® SRAM Not recommended for new design Features ■ Integrated, ultra low power SRAM, real-time clock, power-fail control circuit, battery, and crystal ) ■ BCD coded year, month, day, date, hours, t(s minutes, and seconds c ■ Automatic power-fail chip deselect and WRITE u protection rod ■ WRITE protect voltage VCC = 4.5 to 5.5 V; 4.1 V ≤ VPFD ≤ 4.5 V P (VPFD = power-fail deselect voltage) te ■ Conventional SRAM operation; unlimited le WRITE cycles .

  M48T12   M48T12







Part Number M48T128V
Manufacturers ST Microelectronics
Logo ST Microelectronics
Description 1 Mbit (128 Kb x 8) TIMEKEEPER SRAM
Datasheet M48T12 DatasheetM48T128V Datasheet (PDF)

M48T128Y M48T128V* 5.0 or 3.3V, 1 Mbit (128 Kb x 8) TIMEKEEPER® SRAM FEATURES SUMMARY ■ INTEGRATED, ULTRA LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT, BATTERY, AND CRYSTAL ■ BCD CODED YEAR, MONTH, DAY, DATE, HOURS, MINUTES, AND SECONDS ■ AUTOMATIC POWER-FAIL CHIP DESELECT AND WRITE PROTECTION ■ WRITE PROTECT VOLTAGES (VPFD = Power-fail Deselect Voltage): – M48T128Y: VCC = 4.5 to 5.5V 4.1V ≤ VPFD ≤ 4.5V – M48T128V*: VCC = 3.0 to 3.6V 2.7V ≤ VPFD ≤ 3.0V ■ CONVENTIONAL SRAM OPERATI.

  M48T12   M48T12







16Kbit (2 Kb x 8) TIMEKEEPER SRAM

M48T02 M48T12 5.0 V, 16 Kbit (2 Kb x 8) TIMEKEEPER® SRAM Features ■ Integrated, ultra low power SRAM, real-time clock, and power-fail control circuit ■ BYTEWIDE™ RAM-like clock access ■ BCD coded year, month, day, date, hours, minutes, and seconds ■ Typical clock accuracy of ±1 minute a month, at 25 °C ■ Software controlled clock calibration for high accuracy applications ■ Automatic power-fail chip deselect and WRITE protection ■ WRITE protect voltages (VPFD = power-fail deselect voltage): – M48T02: VCC = 4.75 to 5.5 V; 4.5 V ≤ VPFD ≤ 4.75 V – M48T12: VCC = 4.5 to 5.5 V; 4.2 V ≤ VPFD ≤ 4.5 V ■ Self-contained battery and crystal in the CAPHAT™ DIP package ■ Pin and function compatible with JEDEC standard 2 K x 8 SRAMs ■ RoHS compliant – Lead-free second level interconnect 24 1 PCDIP24 battery/crystal CAPHAT™ June 2011 Doc ID 2410 Rev 9 1/25 www.st.com 1 Contents Contents M48T02, M48T12 1 Description . . . . . . . . . . . . . . . . . ..


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