T89C51RD2-3CBC-L ATMEL [ATMEL Corporation], T89C51RD2-3CBC-L Datasheet - Page 77

• Manufacturer Part Number: T89C51RD2-3CBC-L
• Description: 0 to 40MHz Flash Programmable 8-bit Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

T89C51RD2
9.5.3. External Program Memory Read Cycle
77
Symbol
PORT 0
PORT 2
T
T
T
T
T
T
T
T
T
T
T
AVLL
LLAX
LHLL
LLPL
PLPH
AVIV
PLAZ
PSEN
LLIV
PLIV
PXIX
PXIZ
ALE
INSTR IN
OR SFR-P2
ADDRESS
Type
Max
Max
Max
Max
Max
Min
Min
Min
Min
Min
Min
Table 40. AC Parameters for a Variable Clock
T
LHLL
T
T
LLAX
AVLL
A0-A7
Standard
Clock
2 T - x
4 T - x
3 T - x
3 T - x
5 T - x
T - x
T - x
T - x
T - x
x
x
T
AVIV
ADDRESS A8-A15
T
LLIV
T
LLPL
TPLAZ
T
PLIV
X2 Clock
0.5 T - x
0.5 T - x
0.5 T - x
1.5 T - x
1.5 T - x
0.5 T - x
2.5 T - x
T
2 T - x
PLPH
T - x
x
x
INSTR IN
T
PXIX
12 T
CLCL
X parameter
for -M range
T
10
15
15
30
10
20
40
40
10
0
7
PXIZ
T
PXAV
A0-A7
X parameter
for -L range
Rev. F - 15 February, 2001
10
15
15
30
10
20
40
40
10
0
7
ADDRESS A8-A15
INSTR IN
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns