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Numéro de référence | HM5225645F-B60 | ||
Description | 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 | ||
Fabricant | Hitachi Semiconductor | ||
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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: 1.27 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)
Interleave (BL = 4/8)
• Programmable CAS latency: 2/3
• Byte control by DQMB
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Pages | Pages 16 | ||
Télécharger | [ HM5225645F-B60 ] |
No | Description détaillée | Fabricant |
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 | Hitachi Semiconductor |
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TSPC106 | PCI Bus Bridge Memory Controller | ATMEL |
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