Freeram asynchronous timing characteristics, Single-port write/read, Dual-port write with read – Rainbow Electronics AT40K40LV User Manual
Page 29: Dual-port read, At40k/at40klv series fpga
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29
AT40K/AT40KLV Series FPGA
0896C–FPGA–04/02
FreeRAM Asynchronous Timing Characteristics
Single-port Write/Read
Dual-port Write with
Read
Dual-port Read
0
1
WE
ADDR
OE
DATA
2
3
t
WEL
t
AWS
t
AWH
t
OH
t
OXZ
t
DS
t
DH
t
OZX
t
AD
0
1
WE
WR ADDR
WR DATA
RD DATA
2
t
WEL
t
AWS
t
AWH
t
WEH
t
DD
t
DH
t
WD
NEW
PREV.
NEW
PREV.
= WR ADDR 1
OLD
RD ADDR
t
WECYC
RD ADDR
DATA
0
1
t
OZX
OE
t
OXZ
t
AD
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