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HM5225645F-B60 - 256M LVTTL interface SDRAM 100 MHz 1-Mword x 64-bit x 4-bank/2-Mword x 32-bit x 4-bank PC/100 SDRAM

General Description

The Hitachi HM5225645F is a 256-Mbit SDRAM organized as 1048576-word × 64-bit × 4-bank.

The Hitachi HM5225325F is a 256-Mbit SDRAM organized as 2097152-word × 32-bit × 4-bank.

All inputs and outputs are referred to the rising edge of the clock input.

Key Features

  • Single chip wide bit solution (× 64/× 32) 3.3 V power supply Clock frequency: 100 MHz (max) LVTTL interface Extremely small foot print: 1.27 mm pitch  Package: BGA (BP-108) 4 banks can operate simultaneously and independently Burst read/write operation and burst read/single write operation capability Programmable burst length: 4/8/full page 2 variations of burst sequence  Sequential (BL = 4/8/full page) .

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HM5225165B-A6 256M LVTTL interface SDRAM 133 MHz/100 MHz 4-Mword 16-bit 4-bank/8-Mword 8-bit 4-bank /16-Mword 4-bit 4-bank PC/133/ PC/100 SDRAM Elpida Memory
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HM5225405B-75 256M LVTTL interface SDRAM 133 MHz/100 MHz 4-Mword 16-bit 4-bank/8-Mword 8-bit 4-bank /16-Mword 4-bit 4-bank PC/133/ PC/100 SDRAM Elpida Memory
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Other Datasheets by Hitachi Semiconductor (now Renesas)

Part Number Description
HM5225325F-B60 256M LVTTL interface SDRAM 100 MHz 1-Mword x 64-bit x 4-bank/2-Mword x 32-bit x 4-bank PC/100 SDRAM
HM5212325F-B60 128M LVTTL interface SDRAM 100 MHz 1-Mword x 32-bit x 4-bank PC/100 SDRAM
HM5212325FBPC-B60 128M LVTTL interface SDRAM 100 MHz 1-Mword x 32-bit x 4-bank PC/100 SDRAM
HM5264165F-75 64M LVTTL interface SDRAM
HM5264805F-75 64M LVTTL interface SDRAM 133 MHz/100 MHz

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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HM5225645F-B60 HM5225325F-B60 256M LVTTL interface SDRAM 100 MHz 1-Mword × 64-bit × 4-bank/2-Mword × 32-bit × 4-bank PC/100 SDRAM ADE-203-1014C (Z) Rev. 1.0 Oct. 1, 1999 Description The Hitachi HM5225645F is a 256-Mbit SDRAM organized as 1048576-word × 64-bit × 4-bank. The Hitachi HM5225325F is a 256-Mbit SDRAM organized as 2097152-word × 32-bit × 4-bank. All inputs and outputs are referred to the rising edge of the clock input. It is packaged in standard 108 bump BGA. Features • • • • • • • • • Single chip wide bit solution (× 64/× 32) 3.3 V power supply Clock frequency: 100 MHz (max) LVTTL interface Extremely small foot print: 1.