T89C51RD2-SMSC-M View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'T89C51RD2-SMSC-M' PDF : 86 Pages View PDF
T89C51RD2
Symbol
TLHLL
TAVLL
TLLAX
TLLIV
TLLPL
TPLPH
TPLIV
TPXIX
TPXIZ
TAVIV
TPLAZ
Table 40. AC Parameters for a Variable Clock
Type
Standard
Clock
X2 Clock
X parameter X parameter
for -M range for -L range
Min
2T-x
T-x
10
10
Min
T-x
0.5 T - x
15
15
Min
T-x
0.5 T - x
15
15
Max
4T-x
2T-x
30
30
Min
T-x
0.5 T - x
10
10
Min
3T-x
1.5 T - x
20
20
Max
3T-x
1.5 T - x
40
40
Min
x
x
0
0
Max
T-x
0.5 T - x
7
7
Max
5T-x
2.5 T - x
40
40
Max
x
x
10
10
9.5.3. External Program Memory Read Cycle
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ALE
PSEN
PORT 0 INSTR IN
PORT 2
ADDRESS
OR SFR-P2
TLHLL
TLLAX
TAVLL
A0-A7
TLLIV
TLLPL
TPLPH
12 TCLCL
TPLIV
TPLAZ
TPXIX
INSTR IN
TPXAV
TPXIZ
A0-A7
TAVIV
ADDRESS A8-A15
INSTR IN
ADDRESS A8-A15
77
Rev. F - 15 February, 2001
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