M13S128324A-2M Datasheet, PDF (29/48 Pages) Elite Semiconductor Memory Technology Inc. – Double-data-rate architecture, two data transfers per clock cycle

ESMT
M13S128324A (2M)
Truth Table – Current State Bank n
Current State
CS RAS CAS WE
Command to Bank n ^{[Note 1~6,13]}
COMMAND / ACTION
H
X
X
X DESELECT (NOP / continue previous operation)
Any
L
H
H
H No Operation (NOP / continue previous operation)
L
L
H
H ACTIVE (select and activate row)
Idle
L
L
L
H AUTO REFRESH
L
L
L
L MODE REGISTER SET
L
H
L
H READ (select column & start read burst)
Row Active
L
H
L
L WRITE (select column & start write burst)
L
L
H
L PRECHARGE (deactivate row in bank or banks)
L
H
L
H READ (select column & start new read burst)
Read
(Auto Precharge
L
H
L
L WRITE (select column & start write burst)
Disabled)
L
L
H
L PRECHARGE (truncate read burst, start precharge)
L
H
H
L BURST TERMINATE
Write
L
H
L
(Auto Precharge
L
H
L
Disabled)
L
L
H
Command to Bank m ^{[Note 1~3, 6,13~15]}
H READ (select column & start read burst)
L WRITE (select column & start new write burst)
L PRECHARGE (truncate write burst, start precharge)
H
X
X
X DESELECT (NOP / continue previous operation)
Any
L
H
H
H No Operation (NOP / continue previous operation)
Idle
X
X
X
X Any command allowed to bank m
L
L
H
H ACTIVE (select and activate row)
Row Activating,
Active, or
L
H
L
H READ (select column & start read burst)
Precharging
L
H
L
L WRITE (select column & start write burst)
L
L
H
L PRECHARGE
L
L
H
H ACTIVE (select and activate row)
Read
(Auto Precharge
L
H
L
H READ (select column & start new read burst)
disabled)
L
H
L
L WRITE (select column & start write burst)
L
L
H
L PRECHARGE
L
L
H
H ACTIVE (select and activate row)
Write
(Auto Precharge
L
H
L
H READ (select column & start read burst)
disabled)
L
H
L
L WRITE (select column & start new write burst)
L
L
H
L PRECHARGE
L
L
H
H ACTIVE (select and activate row)
Read with
L
H
L
H READ (select column & start new read burst)
Auto Precharge
L
H
L
L WRITE (select column & start write burst)
L
L
H
L PRECHARGE
L
L
H
H ACTIVE (select and activate row)
Write with
Auto Precharge
L
H
L
H READ (select column & start read burst)
L
H
L
L WRITE (select column & start new write burst)
L
L
H
L PRECHARGE
NOTE
7
7
10
10
8
10
10, 12
8
9
10, 11
10
8, 11
10
10
10
10, 12
10, 11
10
3a, 10
3a, 10, 12
3a, 10
3a, 10
Elite Semiconductor Memory Technology Inc.
Publication Date : Aug. 2011
Revision : 1.3
29/48