HM5264805F-75 Datasheet | Hitachi Semiconductor

Description The Hitachi HM5264165F is a 64-Mbit SDRAM organized as 1048576-word × 16-bit × 4 bank. The Hitachi HM5264805F is a 64-Mbit SDRAM organized as 2097152-word × 8-bit × 4 bank. The Hitachi HM5264405F is a 64-Mbit SDRAM organized as 4194304-word × 4-bit × 4 bank. All inputs and outputs are referred to the rising edge of the clock input. It is packaged in standard 54-pin plastic TSOP II. Features - - - - - - - - 3.3 V power supply Clock frequency: 133 MHz/100 MHz (max) LVTTL interface Single pulsed RAS 4 banks can operate simultaneously and independently Burst read/write operation and burst read/single write operation capability Programmable burst length: 1/2/4/8/full page 2 variations of burst sequence  Sequential (BL = 1/2/4/8/full page)  Interleave (BL = 1/2/4/8) HM5264165F/HM5264805F/HM5264405F-75/A60/B60 - Programmable CAS latency: 2/3 - Byte control by DQM: DQM (HM5264805F/HM5264405F) DQMU/DQML (HM5264165F) - 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. HM5264165FTT-75- HM5264165FTT-A60 HM5264165FTT-B60 - 2 HM5264165FLTT-75 - 1 HM5264165FLTT-A60 HM5264165FLTT-B60 - 2 HM5264805FTT-75 - 1 HM5264805FTT-A60 HM5264805FTT-B60 - 2 HM5264805FLTT-75 - 1 HM5264805FLTT-A60 HM5264805FLTT-B60 - 2 HM5264405FTT-75 - 1 HM5264405FTT-A60 HM5264405FTT-B60 - 2 HM5264405FLTT-75 - 1 HM5264405FLTT-A60 HM5264405FLTT-B60 - 2 Note: Frequency 133 MHz 100 MHz 100 MHz 133 MHz 100 MHz 100 MHz 133 MHz 100 MHz 100 MHz 133 MHz 100 MHz 100 MHz 133 MHz 100 MHz 100 MHz 133 MHz 100 MHz 100 MHz CAS latency 3 2/3 3 3 2/3 3 3 2/3 3 3 2/3 3 3 2/3 3 3 2/3 3 Package 400-mil 54-pin plastic TSOP II (TTP-54D) 1. 100 MHz operation at CAS latency = 2. 2. 66 MHz operation at CAS latency = 2. HM5264165F/HM5264805F/HM5264405F-75/A60/B60 Pin Arrangement (HM5264165F) 54-pin TSOP VCC DQ0 VCCQ DQ1 DQ2 VSSQ DQ3 DQ4 VCCQ DQ5 DQ6 VSSQ DQ7 VCC DQML...