IS61QDB42M18A Datasheet, PDF (10/30 Pages) Integrated Silicon Solution, Inc – Synchronous pipeline read with late write operation

IS61QDB42M18A
IS61QDB41M36A
Timing Reference Diagram for Truth Table
The Timing Reference Diagram for Truth Table is helpful in understanding the Clock and Write Truth Tables, as it
shows the cycle relationship between clocks, address, data in, data out, and control signals. Read command is issued
at the beginning of cycle “t”. Write command is issued at the beginning of cycle “t+1”.
Cycle
t
t+1
t+2
t+3
t+4
t+5
K Clock
K# Clock
R#
W#
BW_x#
Address
A
Data-In
Data-Out
C Clock
C# Clock
CQ Clock
CQ# Clock
B
DB
DB+1 DB+2 DB+3
QA
QA+1 QA+2 QA+3
Integrated Silicon Solution, Inc.- www.issi.com
10
Rev. B
10/02/2014