Maxim Integrated DS38464
The DS38464 is a self-contained 2,621,440-bit, nonvolatile static RAM, which is organized as a 64K x 40 memory. The DS38464 employs the popular JEDEC standard 72-position SIMM connection scheme and requires no additional circuitry. The unique address specified by the 16 address inputs (A0 - A15) defines which byte of data is to be accessed from the selected SRAMs.| Part No. | DS38464 |
|---|---|
| Datasheet | DS38464 Download |
| Manufacturer |  Maxim Integrated |
| Description | 3.3V 64K x 40 NV SRAM SIMM |
| Buy | Stock & Price |
FEATURES
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● 2Mbits organized as a 64K x 40 memory 6 years minimum data retention in the absence of external power Nonvolatile circuitry transparent to and independent of host system Automatic write protection circuitry safeguards against data loss Battery monitor checks remaining capacity daily Fast access time of 70ns Operating VCC range of 3.0V to 3.6V Employs popular JEDEC standard 72position SIMM connector Operating temperature: 0oC to +70oC PIN ASSIGNMENT PIN
DESCRIPTION
A0 - A15 DQ0 – DQ39 CEA\ WE\ OE\ VCC GND Address Inputs Data Inputs/Outputs Chip Enable Inputs Write Enable Inputs Output Enable Inputs 3.3V Power Supply Ground DS38464 72-PIN SIMM 1 of 10 102902 DS38464DESCRIPTION
Built using three 64K x 16 SRAMs, one nonvolatile control IC, and one lithium battery, this nonvolatile memory contains all the necessary control circuitry and lithium energy source to maintain data integrity in the absence of power for more than 6 years. READ MODE The DS38464 executes a read cycle whenever WE\ is inactive (high) and CE\ and OE\ are active (low).
