at89c5131 ATMEL Corporation, at89c5131 Datasheet - Page 163

• Manufacturer Part Number: at89c5131
• Description: 8-bit Flash Microcontroller With Full Speed Usb Device At89c5131
• Manufacturer: ATMEL Corporation

External Data Memory Write
Cycle
4136C–USB–04/05
PORT 0
PORT 2
PSEN
ALE
WR
OR SFR-P2
ADDRESS
Table 117. AC Parameters for a Variable Clock
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWX
QVWH
WHQX
WHLH
WHLH
RLRH
RHDX
RHDZ
AVDV
AVWL
RLDV
LLWL
LLWL
RLAZ
LLDV
A0-A7
T
T
LLAX
AVWL
T
LLWL
Type
Max
Max
Max
Max
Max
Max
Max
Min
Min
Min
Min
Min
Min
Min
Min
Min
ADDRESS A8-A15 OR SFR P2
T
QVWX
Standard
Clock
3 T + x
6 T - x
6 T - x
5 T - x
2 T - x
8 T - x
9 T - x
3 T - x
4 T - x
7 T - x
T + x
T - x
T - x
T - x
x
x
T
QVWH
T
DATA OUT
WLWH
X2 Clock
1.5 T + x
0.5 T + x
2.5 T - x
4.5 T - x
1.5 T - x
0.5 T - x
3.5 T - x
0.5 T - x
0.5 T - x
3 T - x
3 T - x
2 T - x
4T -x
T - x
x
x
T
WHLH
X Parameter
20
20
25
20
40
60
25
25
25
15
25
10
15
15
T
0
0
WHQX
AT89C5131
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
161