IS42S16100 Integrated Silicon Solution, IS42S16100 Datasheet - Page 18

• Manufacturer Part Number: IS42S16100
• Description: 512K Words x 16Bits x 2 Banks Synchronous Dynamic RAM
• Manufacturer: Integrated Silicon Solution

IS42S16100
TWO BANKS OPERATION COMMAND TRUTH TABLE
18
Operation
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF
MRS
3. CA: A8,A9 = don't care.
Notes:
1. H: HIGH level input, L: LOW level input, X: HIGH or LOW level input, RA: Row Address, CA: Column
2. The device state symbols are interpreted as follows:
Address
I
A
R
W
RP
WP
Any
Idle (inactive state)
Row Active State
Read
Write
Read With Auto-Precharge
Write With Auto-Precharge
Any State
CS
H
L
L
L
L
L
L
L
L
RAS CAS WE
H
H
H
X
H
L
L
L
L
H
H
H
H
X
L
L
L
L
X
H
H
H
H
L
L
L
L
A11 A10 A9-A0
X
X
X
H
H
H
H
H
H
H
H
H
X
X
H
H
X
L
L
L
L
L
L
L
L
L
L
L
OPCODE
RA
RA
X
X
X
H
H
H
H
H
H
H
H
H
H
X
L
L
L
L
L
L
L
L
L
L
L
L
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
RA
RA
X
X
X
X
X
X
X
X
X
X
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
Integrated Silicon Solution, Inc. — 1-800-379-4774
BANK 0 BANK 1
R/W/A/I
R/W/A/I
R/W/A/I
R/W/A
R/W/A
R/W/A
R/W/A
R/W/A
Previous State
R/W
R/W
R/W
R/W
Any
Any
Any
I/A
I/A
I/A
I/A
I/A
I/A
I/A
I/A
I/A
A
A
A
A
I
I
I
I
(1,2)
R/W/A/I
R/W/A/I
R/W/A/I
R/W/A
R/W/A
R/W/A
R/W/A
R/W/A
R/W
R/W
R/W
R/W
Any
Any
Any
I/A
I/A
I/A
I/A
I/A
I/A
I/A
I/A
I/A
A
A
A
A
I
I
I
I
BANK 0 BANK 1
R/W/A/I
Next State
Any
Any
WP
WP
Any
RP
RP
I/A
I/A
I/A
I/A
I/A
I/A
I/A
W
W
A
A
A
R
R
A
A
A
I
I
I
I
I
I
I
R/W/A/I
Any
Any
WP
WP
Any
RP
RP
I/A
I/A
I/A
I/A
I/A
I/A
I/A
W
W
R
R
A
A
A
A
A
A
I
I
I
I
I
I
I
ISSI
11/01/01
Rev. C
®