X68257 Datasheet, PDF (10/14 Pages) Xicor Inc. – E2 Micro-Peripheral

X68257
WR Controlled Write Cycle
Symbol
Parameter
tLHLL
tAVLL
t_LLAX
tDVWH
tWHDX
t_ELLL
tWLWH
tWRS
t_WRH
tBLC
tWC ⁽⁷⁾
ALE Pulse Width
Address Setup Time
Address Hold Time
Data Setup Time
Data Hold Time
Chip Enable Setup Time
WR Pulse Width
WR Setup Time
WR Hold Time
Byte Load Time (Page Write)
Write Cycle Time
WR Controlled Write Timing Diagram
Min.
80
20
30
50
30
7
120
30
20
0.5
Max.
100
5
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ms
6539 PGM T11
OPERATION
CE
BYTE 0
BYTE 1
BYTE 2
LAST BYTE
READ (1)(2)
AFTER tWC READY FOR
NEXT WRITE OPERATION
AS
A/D0–A/D7
A8–A14
AIN DIN
An
AIN DIN
An
AIN DIN
An
AIN DIN
An
AIN DIN
An
AIN
ADDR
AIN
Next Address
E
R/W
tBLC
tWC
6539 FHD F07.1
Note: (7) t_WC is the minimum cycle time to be allowed from the system perspective unless polling techniques are used. It is the maximum
time the device requires to automatically complete the internal write operation.
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