HM5225645F View Datasheet(PDF) - Hitachi -> Renesas Electronics

Part Name

Description

MFG CO.

HM5225645F

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

Hitachi -> Renesas Electronics 

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HM5225645F-B60, HM5225325F-B60

• Refresh cycles: 4096 refresh cycles/64 ms

• 2 variations of refresh

 Auto refresh

 Self refresh

• Full page burst length capability

 Sequential burst

 Burst stop capability

Ordering Information

Type No.

Frequency

CAS latency

HM5225645FBP-B60*

100 MHz

3

HM5225325FBP-B60*

100 MHz

3

Note: 66 MHz operation at CAS latency = 2.

Package

14 mm × 22 mm 108 bump BGA (BP-108)

2

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