AS3V2M16
&
ꢅꢆ
Capacitance (f = 1 MHz, T = Room temperature, V = NOMINAL)
a
CC
Parameter
Input capacitance
I/ O capacitance
Symbol
Signals
A, CS, ZZ, WE, OE, LB, UB
I/ O
Test conditions
IN = 0V
IN = VOUT = 0V
Max
Unit
pF
C
V
5
7
IN
C
V
pF
I/ O
ꢀꢁꢄ
Read cycle (over the operating range)
–55
–70
–85
Parameter
Read cycle time
Symbol Min Max Min Max Min Max
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
tRC
tAA
tACS
tOE
55
–
–
70
–
–
85
–
–
Address access time
55
55
25
–
70
70
35
–
85
85
35
–
3
3
Chip select (CS) access time
Output enable (OE) access time
Output hold from address change
CSꢁꢊꢆꢋꢁꢇo output in low Z
CS high to output in high Z
OE low to output in low Z
UB/ LB access time
–
–
–
–
–
–
tOH
tCLZ
tCHZ
tOLZ
tBA
10
10
0
10
10
0
10
10
0
5
–
–
–
4, 5
4, 5
4, 5
20
–
25
–
25
–
5
5
5
–
55
–
–
70
–
–
85
–
UB/ LB low to low Z
tBLZ
tBHZ
tOHZ
tPC
10
0
10
0
10
0
4, 5
4, 5
4, 5
UB/ LB high to high Z
OE high to output in high Z
Page cycle time
20
20
20
15
25
25
25
20
25
25
25
20
0
0
0
–
–
–
Page access time
tPA
–
–
–
Key to switching waveforms
Rising input
Falling input
Undefined/ don’t care
ꢀꢁꢂꢁꢃꢁꢄ
Read waveform 1 (address controlled)
(CS = OE = Low, WE = ZZ = High, UB and / or LB = Low)
t
RC
Address
t
AA
t
t
OH
OH
D
Previous data valid
Data valid
OUT
10/ 17/ 02, V. 0.9.9
Alliance Semiconductor
P. 4 of 10