Datasheet > EM68B16CWQH-18H

EM68B16CWQH-18H

更新时间： 2022-02-26 12:34:35

品牌	Logo	应用领域
钰创 - ETRON		动态存储器双倍数据速率
页数	文件大小	规格书
60页	1029K
描述
32M x 16 bit DDRII Synchronous DRAM (SDRAM)

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数据手册

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EM68B16CWQH-18H 数据手册

EM68B16CWQH

EtronTech

Figure 41. Write with autoprecharge to power-down entry

Tm+1

Tm+2

Tm+3

Tx+1

Tx+2

Tx+3

Tx+4

Tx+5

Tx+6

CK#

CMD

CKE

WRA

PRE

BL=4

t_IS

WR*1

DQS

DQS#

Tm+1

Tm+2

Tm+3

Tm+4

Tm+5

Tx+1

PRE

Tx+2

Tx+3

Tx+4

CK#

Start internal Precharge

CMD

CKE

WRA

BL=8

t_IS

WR*1

DQS

DQS#

*1: WR is programmed through MRS

Figure 42. Refresh command to power-down entry

T10

T11

CK#

CMD

CKE

REF

CKE can go to LOW one clock after an Auto-refresh command

t_IS

Figure 43. Active command to power-down entry

T10

T11

CMD

CKE

ACT

CKE can go to LOW one clock after an Active command

t_IS

Rev. 1.6

Oct. /2015

1...55 56 575859 60

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