emc646sp16ak Emlsi Inc., emc646sp16ak Datasheet - Page 12
emc646sp16ak
Manufacturer Part Number
emc646sp16ak
Description
4mx16 Bit Cellularram
Manufacturer
Emlsi Inc.
Datasheet
1.EMC646SP16AK.pdf
(64 pages)
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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 rising edge of
the next clock that ADV# is LOW. During this first clock rising edge, WE# indicates whether the operation is going to be a READ (WE#
= HIGH, Figure 6) or a WRITE (WE# = LOW, Figure 7).
Figure 6: Burst Mode READ (4-word burst)
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 in the figure 6 is representative of variable latency with no refresh collision or fixed-latency access.
LB#/UB#
DQ[15:0]
A[21:0]
ADV#
WAIT
WE#
CLK
OE#
CE#
READ Burst Identified
(WE# = HIGH)
Address
Valid
Latency Code 2 (3 clocks)
12
D0
D1
D2
EMC646SP16AK
Don’t Care
4Mx16 CellularRAM
D3
Undefined
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