AL422
6.0 Pin Description
Pin name
Pin #
I/O type
input
Function
Data input
DI0~DI7
WCK
1~4, 11~14
9
Input
Write clock
/WE
5
Input (active low)
Input (active low)
Output (tristate)
Input
Write enable
Write reset
/WRST
DO0~DO7
RCK
8
15~18, 25~28
Data output
20
24
Read clock
/RE
Input (active low)
Input (active low)
Input (active low)
Input
Read enable
Read reset
/RRST
/OE
21
22
Output enable
Test pin (pulled-down)*
5V or 3.3V
TST
7
VDD
10
DEC/VDD
GND
19
Decoupling cap input
Ground
6, 23
7.0 Electrical Characteristics
7.1 Absolute Maximum Ratings
Parameter
Ratings
5V application
Unit
3.3V application
-1.0 ~ +4.5
-1.0 ~ +5.5
-20 ~ +20
VDD
VP
Supply Voltage
-1.0 ~ +7.0
-1.0 ~ VDD +0.5
-20 ~ +20
V
V
Pin Voltage
IO
Output Current
mA
°C
°C
TAMB
Tstg
Ambient Op. Temperature
Storage temperature
0 ~ +70
0 ~ +70
-55 ~ +125
-55 ~ +125
© 1999~2006 by AverLogic Technologies, Corp.
Version 1.5
6
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