IS42S16100E Datasheet, PDF (15/82 Pages) Integrated Silicon Solution, Inc – 512K Words x 16 Bits x 2 Banks 16Mb SYNCHRONOUS DYNAMIC RAM

IS42S16100E, IS45S16100E
COMMAND TRUTH TABLE^(1,2)

Symbol Command
MRS
Mode Register Set^(3,4)
REF
Auto-Refresh⁽⁵⁾
SREF
Self-Refresh^(5,6)
PRE
Precharge Selected Bank
PALL
Precharge Both Banks
ACT
Bank Activate⁽⁷⁾
WRIT
Write
WRITA
Write With Auto-Precharge⁽⁸⁾
READ
Read⁽⁸⁾
READA Read With Auto-Precharge⁽⁸⁾
BST
Burst Stop⁽⁹⁾
NOP
No Operation
DESL
Device Deselect
SBY
Clock Suspend / Standby Mode
ENB
Data Write / Output Enable
MASK
Data Mask / Output Disable
CKE
n-1 n CS RAS CAS WE DQM A11 A10 A9-A0 I/On
HXL L L LX
OP CODE
X
H H L L L H X X X X HIGH-Z
H L L L L H X X X X HIGH-Z
H X L L H L X BS L X
X
HXL LHLXX H X
X
H X L L H H X BS Row Row X
H X L H L L X BS L Column⁽¹⁸⁾ X
H X L H L L X BS H Column⁽¹⁸⁾ X
H X L H L H X BS L Column⁽¹⁸⁾ X
H X L H L H X BS H Column⁽¹⁸⁾ X
HX LHHL XX X X
X
HX LHHHXX X X
X
HXHXXXXX X X
X
LXXXXXXX X X
X
H X X X X X L X X X Active
H X X X X X H X X X HIGH-Z
DQM TRUTH TABLE^(1,2)

Symbol Command
ENB
Data Write / Output Enable
MASK Data Mask / Output Disable
ENBU Upper Byte Data Write / Output Enable
ENBL Lower Byte Data Write / Output Enable
MASKU Upper Byte Data Mask / Output Disable
MASKL Lower Byte Data Mask / Output Disable
CKE
n-1
n
H
X
H
X
H
X
H
X
H
X
H
X
DQM
UPPER LOWER
L
L
H
H
L
X
X
L
H
X
X
H
CKE TRUTH TABLE^(1,2)

Symbol Command
Current State
SPND Start Clock Suspend Mode
Active
—
Clock Suspend
Other States
—
Terminate Clock Suspend Mode Clock Suspend
REF Auto-Refresh
Idle
SELF Start Self-Refresh Mode
Idle
SELFX Terminate Self-Refresh Mode Self-Refresh
PDWN Start Power-Down Mode
Idle
—
Terminate Power-Down Mode Power-Down
Integrated Silicon Solution, Inc. — www.issi.com
Rev.  D
08/24/09
CKE
n-1 n CS RAS CAS WE A11 A10A9-A0
HLXXXXXXX
L LXXXXXXX
LHXXXXXXX
HHL L LHXXX
HL L L LHXXX
L H L HHHX X X
L HHX X X X X X
HL LHHHXXX
HLHXXXXXX
LHXXXXXXX
15