W958D6DB Datasheet, PDF (11/57 Pages) Winbond – Low-power features

W958D6DB
256Mb Async./Burst/Sync./A/D MUX
8.2.2 Burst Mode Operation
Burst mode operations enable high-speed synchronous READ and WRITE operations. Burst operations consist of a
multi-clock sequence that must be performed in an ordered fashion. After CE# goes LOW, the address to access is
latched on the first CLK edge after ADV# LOW. During this first clock rising edge, WE# indicates whether the
operation is going to be a READ (WE# = HIGH) or WRITE (WE# =LOW).
8.2.2.1 Burst Mode READ (4-word burst)
CLK
A[max:16]
Valid
address
ADV#
CE#
Latency Code 2(3 clocks)
OE#
WE#
LB#/UB#
A/DQ[15:0]
Valid
address
D0
D1
D2
D3
WAIT
READ burst identified
(WE#=HIGH)
Invalid
Don’t Care
Undefined
Note : Non-default BCR settings for burst mode READ (4-word burst): fixed or variable latency, Latency code 2 (3 clocks), WAIT
active Low, WAIT asserted during delay. Diagram is representative of variable latency with no refresh collision or fixed-
latency access.
- 11 -
Publication Release Date : June 27 ,2013
Revision : A01-003