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M48T128Y

ST Microelectronics
Part Number M48T128Y
Manufacturer ST Microelectronics
Description 1-Mbit SRAM
Published Apr 29, 2005
Detailed Description M48T128Y 5.0 V, 1 Mbit (128 Kb x 8) TIMEKEEPER® SRAM Not recommended for new design Features ■ Integrated, ultra low ...
Datasheet PDF File M48T128Y PDF File

M48T128Y
M48T128Y

Overview
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 so ■ Software-controlled clock calibration for high b accuracy applications O ■ 10 years of data retention and clock operation - in the absence of power t(s) ■ Self-contained battery and crystal in the DIP package uc ■ Pin and function compatible with JEDEC d standard 128 K x 8 SRAMs ro ■ RoHS compliant Obsolete P – Lead-free second level interconnect 32 1 PMDIP32 module September 2011 Doc ID 5746 Rev 7 This is information on a product still in production but not recommended for new designs.
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com 1 Contents Contents M48T128Y 1 Description .
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5 2 Operation modes .
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7 2.
1 READ mode .
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8 2.
2 WRITE mode .
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9 2.
3 Data retention mode .
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10 t(s) 3 Clock operations .
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11 c 3.
1 Reading the clock .
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11 du 3.
2 Setting the clock .
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11 ro 3.
3 Stopping and starting the oscillat...


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