參數(shù)資料
型號(hào)： HM5212805F
廠商： Hitachi,Ltd.
英文描述： 128M LVTTL interface SDRAM(128M LVTTL 接口同步DRAM)
中文描述： 128M的LVTTL接口的SDRAM（128M的LVTTL接口同步的DRAM）
文件頁數(shù)： 32/63頁
文件大?。?/td> 858K
代理商： HM5212805F
HM5212165F/HM5212805F-75/A60/B60
32
Write with auto precharge to Read command interval
1.
Different bank:
When some banks are in the active state, the second read command (another bank) is
executed. However,in case of a burst write, data will continue to be written until one clock before the read
command is executed. The internal auto-precharge of one bank starts at the next clock of the second
command.
Write with Auto Precharge to Read Command Interval
(Different bank)
CLK
Command
BS
Dout
Din
WRIT A
READ
out B0
out B1
out B2
out B3
CAS
Latency = 3
Burst Length = 4
bank0
Write A
bank3
Read
Note: Internal auto-precharge starts at the timing indicated by " ".
DQM,
DQMU/DQML
in A0
2. Same bank:
The consecutive read command from write with auto precharge (the same bank) is illegal. It
is necessary to separate the two commands with a bank active command.
相關(guān)PDF資料
PDF描述
HM5212165F 128M LVTTL interface SDRAM(128M LVTTL 接口同步DRAM)
HM5225165BTT-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
HM5225805BLTT-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
HM5225405B-B6 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
HM5225405BLTT-75 POT 20K OHM 9MM HORZ NO BUSHING
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HM5212805FLTD-75 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:128M LVTTL interface SDRAM 133 MHz/100 MHz 2-Mword × 16-bit × 4-bank/4-Mword × 8-bit × 4-bank PC/133, PC/100 SDRAM
HM5212805FLTD-A60 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128M LVTTL interface SDRAM 133 MHz/100 MHz 2-Mword X 16-bit X 4-bank/4-Mword X 8-bit X 4-bank PC/133, PC/100 SDRAM
HM5212805FLTD-B60 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128M LVTTL interface SDRAM 133 MHz/100 MHz 2-Mword X 16-bit X 4-bank/4-Mword X 8-bit X 4-bank PC/133, PC/100 SDRAM
HM5212805FTD-75 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:128M LVTTL interface SDRAM 133 MHz/100 MHz 2-Mword × 16-bit × 4-bank/4-Mword × 8-bit × 4-bank PC/133, PC/100 SDRAM
HM5212805FTD-A60 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128M LVTTL interface SDRAM 133 MHz/100 MHz 2-Mword X 16-bit X 4-bank/4-Mword X 8-bit X 4-bank PC/133, PC/100 SDRAM
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