January 22, 199 9
Rev. 1/99
4
Galvantech, Inc. reserves the right to change products or specifications without notice
GVT72512A8
REVOLUTIONARY PINOUT 512K X 8
GALVANTECH
, NC.
AC ELECTRICAL CHARACTERISTICS
(Note 5) (All Temperature Ranges; VCC = 5V
+10%
)
DESCRIPTION
- 12
- 15
- 20
SYM
MIN
MAX
MIN
MAX
MIN
MAN
UNITS NOTES
READ Cycle
READ cycle time
Address access time
Chip Enable access time
Output hold from address chang e
Chip Enable to output in Low- Z
Chip disable to output in High- Z
Output Enable access tim e
Output Enable to output in Low- Z
Output Enable to output in High- Z
Chip Enable to power-up tim e
Chip disable to power-down tim e
WRITE Cycle
WRITE cycle time
Chip Enable to end of writ e
Address valid to end of write, with OE#
HIGH
Address setup time
Address hold from end of writ e
WRITE pulse width
WRITE pulse width, with OE# HIG H
Data setup time
Data hold time
Write disable to output in Low- Z
Write Enable to output in High- Z
t
RC
t
AA
t
ACE
t
OH
t
LZCE
t
HZCE
t
AOE
t
LZOE
t
HZOE
t
PU
t
PD
12
15
20
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
12
12
15
15
20
20
4
4
4
4
4
4
4, 7
4, 6, 7
6
6
7
7
8
8
0
0
0
6
7
8
4, 6
4
4
0
0
0
12
15
20
t
WC
t
CW
t
AW
12
8
8
15
9
9
20
10
10
ns
ns
ns
t
AS
t
AH
t
WP2
t
WP1
t
DS
t
DH
t
LZWE
t
HZWE
0
0
0
0
11
9
7
0
5
0
0
12
10
8
0
5
ns
ns
ns
ns
ns
ns
ns
ns
10
8
6
0
4
4, 7
4, 6, 7
6
7
8