emc646sp16ak Emlsi Inc., emc646sp16ak Datasheet - Page 55
emc646sp16ak
Manufacturer Part Number
emc646sp16ak
Description
4mx16 Bit Cellularram
Manufacturer
Emlsi Inc.
Datasheet
1.EMC646SP16AK.pdf
(64 pages)
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Figure 44. Burst READ Interrupted by Burst READ or WRITE
Note:
1. Non-default BCR settings for burst READ interrupted by burst READ or WRITE: Fixed or variable latency code two (three clocks); WAIT active
2. Burst interrupt shown on first allowable clock (i.e., after the first data received by the controller).
3. CE# can stay LOW between burst operations, but CE# must not remain LOW longer than t
LOW; WAIT asserted during delay. All bursts shown for variable latency; no refresh collision.
DQ[15:0] OUT
2nd Cycle READ
2nd Cycle READ
2nd Cycle READ
LB#/UB#
A[21:0]
ADV#
WAIT
WE#
CLK
OE#
CE#
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
IH
IL
IH
IL
IH
IL
IH
IL
IH
IL
OH
OL
IH
IL
IH
IL
OH
OL
t
t
Address
t
t
SP
SP
CSP
SP
Valid
t
t
t
HD
HD
HD
t
CLK
t
ACLK
t
BOE
DQ[15:0] IN
2nd Cycle Write
2nd Cycle Write
Output
2nd Cycle Write
Valid
LB#/UB#
t
CEW
t
t
Address
SP
t
SP
OE#
SP
Valid
t
t
t
HD
HD
t
HD
t
KHTL
OHZ
V
V
V
V
V
V
IH
IL
IH
IL
IH
IL
READ Burst interrupted with new READ or WRITE. See Note 2.
55
t
CEM
High-Z
High-Z
(Note 3)
t
BOE
CEM
t
.
SP
Output
Valid
D0
t
ACLK
t
HD
t
KOH
Output
Valid
D1
Output
Valid
D2
EMC646SP16AK
Don’t Care
Output
Valid
D3
4Mx16 CellularRAM
t
HD
t
OHZ
High-Z
Undefined
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