7025E Datasheet, PDF (9/20 Pages) Maxwell Technologies – (8K x 16-Bit) Dual Port RAM High-Speed CMOS

(8K x 16-Bit) Dual Port RAM High-Speed CMOS
7025E
TABLE 14. 7025E SEMAPHORE READ/WRITE CONTROL ¹
INPUTS
OUTPUTS
MODE
CS
R/W
OE
UB
LB
SEM I/O8-I/O15 I/O0-I/O7
H
H
L
X
X
L
DATAOUT DATAOUT Read data in semaphore
flag
X
H
L
H
H
L
DATAOUT DATAOUT Read data in semaphore
flag
H
X
X
X
L
DATAIN DATAIN Write DinO into semaphore
flagf
X
X
H
H
L
DATAIN DATAIN Write DinO into semaphore
flag
L
X
X
L
X
L
--
--
Not allowed
L
X
X
X
L
L
--
--
Not allowed
1. AO_L - A12_L = AO_R-A12_R.
08.15.02 Rev 2
All data sheets are subject to change without notice 9
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