T89C51CC01 Atmel, T89C51CC01 Datasheet - Page 154

• Manufacturer Part Number: T89C51CC01
• Description: Enhanced 8-Bit Microcontroller
• Manufacturer: Atmel

External Data Memory
Characteristics
154
T89C51CC01
Table 126. Symbol Description
Table 127. AC Parameters for a Variable Clock (F=40MHz)
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWH
WHQX
QVWX
WHLH
RLRH
RLDV
RHDX
RHDZ
AVDV
AVWL
LLDV
LLWL
RLAZ
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWX
QVWH
WHQX
WHLH
RLRH
RHDX
RHDZ
AVDV
AVWL
RLDV
LLDV
LLWL
RLAZ
Parameter
RD Pulse Width
WR Pulse Width
RD to Valid Data In
Data Hold After RD
Data Float After RD
ALE to Valid Data In
Address to Valid Data In
ALE to WR or RD
Address to WR or RD
Data Valid to WR Transition
Data set-up to WR High
Data Hold After WR
RD Low to Address Float
RD or WR High to ALE high
Min
130
130
160
50
75
10
15
10
0
Max
100
160
165
100
30
40
0
Units
4129K–CAN–01/05
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns