UT52L1616MC-10 데이터 시트보기 (PDF) - Utron Technology Inc

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UT52L1616MC-10

1M X 16 BIT SDRAM

Utron Technology Inc 



UTRON

Preliminary Rev. 0.91

UT52L1616

1M X 16 BIT SDRAM

Function Truth Table

The following table shows the operations that are performed when each command is issued in each mode of the

synchronous DRAM.

Current state

Precharge

Idle

Row active

CE RAS CAS WE

HX

X

X

LH

H

H

LH

H

L

LH

L

H

LH

L

L

LL

H

H

LL

H

L

LL

L

H

LL

L

L

HX

X

X

LH

H

H

LH

H

L

LH

L

H

LH

L

L

LL

H

H

LL

H

L

LL

L

H

LL

L

L

HX

X

X

LH

H

H

LH

H

L

LH

L

H

LH

L

L

LL

H

H

Address

X

X

X

BA,CA,A10

BA,CA,A10

BA,RA

BA,A10

X

MODE

X

X

X

BA,CA,A10

BA,CA,A10

BA,RA

BA,A10

X

MODE

X

X

X

BA,CA,A10

BA,CA,A10

BA,RA

Command

DESL

NOP

BST

READ/READ A

WRIT/WRIT A

ACT

PRE,PALL

REF,SELF

MRS

DESL

NOP

BST

READ/READ A

WRIT/WRIT A

ACT

PRE,PALL

REF,SELF

MRS

DESL

NOP

BST

READ/READ A

WRIT/WRIT A

ACT

Read

LL

H

L

BA,A10

PRE,PALL

LL

L

H

X

REF,SELF

LL

L

L

MODE

MRS

HX

X

X

X

DESL

LH

H

H

X

NOP

LH

H

L

X

BST

LH

L

H

BA,CA,A10 READ/READ A

LH

L

L

BA,CA,A10 WRIT/WRIT A

LL

H

H

BA,RA

ACT

LL

H

L

BA,A10

PRE,PALL

Write

LL

L

H

X

REF,SELF

LL

L

L

MODE

MRS

HX

X

X

X

DESL

LH

H

H

X

NOP

LH

H

L

X

BST

LH

L

H

BA,CA,A10 READ/READ A

LH

L

L

BA,CA,A10 WRIT/WRIT A

LL

H

H

BA,RA

ACT

LL

H

L

BA,A10

PRE,PALL

LL

L

H

X

LL

L

L

MODE

REF,SELF

MRS

Operation

Enter IDLE after tRP

Enter IDLE after tRP

ILLEGAL

ILLEGAL

ILLEGAL

ILLEGAL

ILLEGAL

ILLEGAL

ILLEGAL

NOP

NOP

NOP

ILLEGAL

ILLEGAL

Bank and row active

NOP

Refresh

Mode register set

NOP

NOP

NOP

Begin read

Begin write

Other bank active; ILLEGAL

on same bank*³

Precharge

ILLEGAL

ILLEGAL

Continue burst to end

Continue burst to end

Burst stop to full page

Continue burst read to CAS

latency and New read

Term burst read/start write

Other bank active; ILLEGAL

on same bank*³

Term burst read and

Precharge

ILLEGAL

ILLEGAL

Continue burst to end

Continue burst to end

Burst stop on full page

Term burst and New read

Term burst and New read

Other bank active; ILLEGAL on

same bank*³

Term burst write and

Precharge*²

ILLEGAL

ILLEGAL

UTRON TECHNOLOGY INC.

1F, No. 11, R&D Rd. II, Science-Based Industrial Park, Hsinchu, Taiwan, R. O. C.

TEL: 886-3-5777882 FAX: 886-3-5777919

8

P90004

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