K7N641845M Datasheet, PDF (9/24 Pages) Samsung semiconductor – 2Mx36 & 4Mx18 Pipelined NtRAM

K7N643645M
K7N641845M
Preliminary
2Mx36 & 4Mx18 Pipelined NtRAM^TM
STATE DIAGRAM FOR NtRAM^TM
WRITE
READ
READ ^BEGIN
READ
READ
DS
DESELECT
WRITE
DS
BEGIN _WRITE
WRITE
DS
READ
BURST ^BURST
READ
DS
BURST _BURST
WRITE
COMMAND
DS
READ
WRITE
BURST
DESELECT
BEGIN READ
BEGIN WRITE
BEGIN READ
BEGIN WRITE
CONTINUE DESELECT
ACTION
Notes : 1. An IGNORE CLOCK EDGE cycle is not shown is the above diagram. This is because CKE HIGH only blocks the clock(CLK) input and does
not change the state of the device.
2. States change on the rising edge of the clock(CLK)
-9-
Oct. 2004
Rev 0.5