t89c51rd2-slscl ATMEL Corporation, t89c51rd2-slscl Datasheet - Page 87
t89c51rd2-slscl
Manufacturer Part Number
t89c51rd2-slscl
Description
0 To 40 Mhz Flash Programmable 8-bit Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.T89C51RD2-SLSCL.pdf
(104 pages)
- Current page: 87 of 104
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Table 47. AC Parameters for a Variable Clock
External Program Memory
Read Cycle
4243G–8051–05/03
Symbol
T
T
T
T
T
T
T
T
T
T
T
PLPH
PLAZ
LHLL
AVLL
LLAX
LLPL
PXIX
AVIV
PLIV
PXIZ
LLIV
PORT 0
PORT 2
PSEN
ALE
INSTR IN
OR SFR-P2
ADDRESS
Type
Max
Max
Max
Max
Max
Min
Min
Min
Min
Min
Min
T
LHLL
T
Standard Clock
T
LLAX
AVLL
A0-A7
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
T
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
2 T - x
PLPH
T - x
INSTR IN
x
x
T
PXIX
12 T
CLCL
X parameter for -
M range
T
PXIZ
10
15
15
30
10
20
40
40
10
0
7
T
PXAV
A0-A7
X parameter for -
ADDRESS A8-A15
L range
10
15
15
30
10
20
40
40
10
0
7
INSTR IN
T89C51RD2
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
87
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