IS42S16100-10TI ISSI [Integrated Silicon Solution, Inc], IS42S16100-10TI Datasheet - Page 18

• Manufacturer Part Number: IS42S16100-10TI
• Description: 512K Words x 16 Bits x 2 Banks (16-MBIT) SYNCHRONOUS DYNAMIC RAM
• Manufacturer: ISSI [Integrated Silicon Solution, Inc]

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