lh5164av Sharp Microelectronics of the Americas, lh5164av Datasheet - Page 9

• Manufacturer Part Number: lh5164av
• Manufacturer: Sharp Microelectronics of the Americas

CMOS 64K (8K
NOTES:
1. t
2. t
3. t
4. The writing occurs during an overlapping period of CE
5. If CE
6. If CE
7. When I/O pins are in the output state, input signals with the opposite logic level must not be applied.
to the time when the writing is finished.
outputs will remain high-impedance.
the outputs will remain high-impedance.
CW
WR
AS
is defined as the time from address change to writing start.
is defined as the time from the last occuring transition, either CE
is defined as the time from writing finish to address change.
1
1
LOW transition or CE
HIGH transition or CE
A
0
D
- A
CE
CE
WE
OUT
D
12
IN
2
1
8) Static RAM
2
2
HIGH transition occurs at the same time or after WE LOW transition, the
LOW transition occurs at the same time or before WE HIGH transition,
Figure 7. Write Cycle (OE Low Fixed)
(NOTE 3)
(NOTE 5)
t
AS
1
= 'LOW,' CE
t
AW
t
2
WC
1
= 'HIGH,' and WE = 'LOW' (t
LOW transition or CE
(NOTE 7)
(NOTE 1)
t
t
CW
t
CW
WZ
(NOTE 4)
t
WP
t
DW
DATA VALID
2
HIGH transition,
(NOTE 2)
WP
t
t
t
WR
WR
WR
(NOTE 6)
).
t
DH
t
OW
LH5164AV
5164AV-6
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