HYM64V4005GU-50 Просмотр технического описания (PDF) - Siemens AG

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HYM64V4005GU-50

3.3V 4M × 64-Bit EDO-DRAM Module 3.3V 4M x 72-Bit EDO-DRAM Module

Siemens AG 

HYM64(72)V4005/45GU-50/-60

4M x 64/72 DRAM Module

TRUTH TABLE

FUNCTION

RAS

Standby

H

Read

L

Early-Write

L

Late-Write

L

Read-Modify-Write

L

(RMW)

EDO Page Mode Read 1st Cycle L

2nd Cycle L

EDO Page Mode Write 1st Cycle L

2nd Cycle L

EDO Page Mode RMW 1st Cycle L

2st Cycle L

RAS only refresh

L

CAS-before-RAS refresh

H-L

Hidden Refresh

READ L-H-L

WRITE L-H-L

Self Refresh

H-L

CAS

X

L

L

L

L

H-L

H-L

H-L

H-L

H-L

H-L

H

L

L

L

L

WRITE

X

H

L

H-L

H-L

H

H

L

L

H-L

H-L

X

H

H

L

H

OE

X

L

X

H

L-H

L

L

X

X

L-H

L-H

X

X

L

X

X

ROW COL

ADDR ADDR

DQ0-DQ63

X

X High Impedance

ROW COL

Data Out

ROW COL

Data In

ROW COL

Data In

ROW COL Data Out, Data In

ROW

n/a

ROW

n/a

ROW

n/a

ROW

X

ROW

ROW

X

COL

COL

COL

COL

COL

COL

n/a

n/a

COL

COL

X

Data Out

Data Out

Data In

Data In

Data Out, Data In

Data Out, Data In

High Impedance

High Impedance

Data Out

Data In

High Impedance

Semiconductor Group

7

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