TM124FBK32S

1 048 576 x 32 位动态 RAM 模块

TM124FBK32

The TM124FBK32 is a 4M-byte DRAM organized as four times 1048576 × 8 in a 72-pin leadless SIMM. The SIMM is composed of eight TMS44409, 1048576 × 4-bit DRAMs, each in a 20/26-lead plastic SOJ package, mounted on a substrate together with decoupling capacitors. Each TMS44409 is described in the TMS44409 data sheet. The TM124FBK32 is available in the single-sided BK leadless module for use with sockets.

### TM248GBK32

The TM248GBK32 is a 8M-byte DRAM organized as four times 2097152 × 8 in a 72-pin leadless SIMM. The SIMM is composed of sixteen TMS44409, 1048576 × 4-bit DRAMs, each in a 20/26-lead plastic SOJ package, mounted on a substrate together with decoupling capacitors. Each TMS44409 is described in the TMS44409 data sheet. The TM248GBK32 is available in the double-sided BK leadless module for use with sockets.

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Organization

TM124FBK32...1048576 × 32

TM248GBK32...2 097 152 × 32

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Single 5-V Power Supply

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72-pin Single In-Line Memory Module SIMM for Use With Sockets

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TM124FBK32 Utilizes Eight 4M-Bit Dynamic RAMs DRAMs in Plastic Small-Outline J-Lead SOJ Packages

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TM248GBK32 Utilizes Sixteen 4M-Bit DRAMs in Plastic SOJ Packages

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Long Refresh Period

16 ms 1024 Cycles

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All Inputs, Outputs, Clocks Fully TTL Compatible

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3-State Output

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Common **CAS**\ Control for Eight Common Data-In and Data-Out Lines, In Four Blocks

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Extended Data-Out EDO Operation With **CAS**\\-Before- **RAS**\ CBR, **RAS**\\-Only, and Hidden Refresh

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JEDEC First Generation 72-Pin SIMM Pinout

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Presence Detect

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Performance Ranges:

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Low Power Dissipation

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Operating Free-Air Temperature Range...0°C to 70°C

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Gold-Tabbed Versions Available:****

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TM124FBK32

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TM248GBK32

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Tin-Lead- Solder- Tabbed Versions Available:

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TM248GBK32S

Part numbers in this data sheet are for the gold-tabbed version; the information applies to both gold-tabbed and solder-tabbed versions.