TM124BBK32U

1 048 576 x 32 位动态 RAM 模块

TM124BBK32F

The TM124BBK32F is a 32-megabit dynamic random-access memory DRAM organized as four times

1048576 × 8 in a 72-pin SIMM. The SIMM is composed of two TMS418160DZ, 1048576 × 16-bit DRAMs, each in a 42-lead plastic SOJ package mounted on a substrate with decoupling capacitors. The TMS418160DZ is described in the TMS418160 data sheet. The TM124BBK32F SIMM is available in the single-sided BK-leadless module for use with sockets.

### TM248CBK32F

The TM248CBK32F is a 64-megabit DRAM organized as four times 2097152×8 in a 72-pin SIMM. The SIMM is composed of four TMS418160DZ, 1048576 × 16-bit DRAMs, each in a 42-lead plastic SOJ package mounted on a substrate with decoupling capacitors. The TMS418160DZ is described in the TMS418160 data sheet. The TM248CBK32F SIMM is available in the double-sided BK-leadless module for use with sockets.

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Organization

TM124BBK32F...1048576 × 32

TM248CBK32F...2097152 × 32

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Single 5-V Power Supply ±10% Tolerance

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72-Pin Single-In-Line Memory Module SIMM for Use With Socket

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TM124BBK32F - Utilizes Two 16-Megabit DRAMs in Plastic Small-Outline J-Lead SOJ Packages

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TM248CBK32F - Utilizes Four 16-Megabit DRAMs in Plastic Small-Outline J-Lead 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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Enhanced Page-Mode Operation With

**CAS**\\-Before- **RAS**\ CBR, **RAS**\\-Only, and Hidden Refresh

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Presence Detect

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Performance Ranges: ACCESS ACCESS ACCESS READ ME TIME TIME OR t**RAC** t**AA** t**CAC** WRITE CYCLE MAX MAX MAX MIN"124BBK32F-60 60 ns 30 ns 15 ns 110 ns"124BBK32F-70 70 ns 35 ns 18 ns 130 ns"124BBK32F-80 80 ns 40 ns 20 ns 150 ns"248CBK32F-60 60 ns 30 ns 15 ns 110 ns"248CBK32F-70 70 ns 35 ns 18 ns 130 ns"248CBK32F-80 80 ns 40 ns 20 ns 150 ns

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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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TM124BBK32F

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TM248CBK32F

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Tin-Lead Solder Tabbed Versions Available:

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TM248CBK32U