W968D6DA Datasheet, PDF (68/75 Pages) Winbond – Low-power features

W968D6DA
256Mb Async./Page,Syn./Burst CellularRAM
10.2.27 Asynchronous WRITE (ADV# LOW) Followed by Burst READ
CLK
V IH
V IL
A [ max : 0 ]
V IH
V IL
ADV #
V IH
V IL
LB # / UB #
V IH
V IL
CE #
V IH
V IL
OE #
V IH
V IL
WE # ^{V IH}
V IL
V OH
WAIT _{V OL}
tCLK
tWC
Vaild
Address
tWC
Vaild
Address
tAW tWR
tSP tHD
Vaild
Address
tSP tHD
tBW
tSP
tCW
tWC
tWP ^tWPH
tCBPH _tCSP
*2
tSP tHD
tCEW
DQ [ 15:0 ] V IH
IN / OUT ^{V IL}
High - Z _Data
V OH
Data _{V OL}
tDH tDW
High - Z
tHD
tOHZ
tBOE
High - Z
tACLK tKOH
Valid Valid Valid Valid
Output Output Output Output
Don‟t Care
Undefined
Note : 1. Non-default BCR settings for asynchronous WRITE ,with ADV# LOW, followed by burst READ: Fixed or variable
latency; latency code 2(3 clocks); WAIT active LOW; WAIT asserted during delay.
2. When transitioning between asynchronous and variable-latency burst operations, CE# must go HIGH. CE# can stay
LOW when transitioning to fixed-latency burst READs. A refresh opportunity must be provided every tCEM. A refresh
opportunity is satisfied by either of the following two conditions: a) clocked CE# HIGH, or b) CE# HIGH for longer than
15ns.
- 68 -
Publication Release Date : June 27, 2013
Revision : A01-003