AT89C5122 ATMEL [ATMEL Corporation], AT89C5122 Datasheet - Page 194

• Manufacturer Part Number: AT89C5122
• Description: MICROCONTROLLER WITH USB AND SMART CARD READER INTERFACES
• Manufacturer: ATMEL [ATMEL Corporation]

External Program Memory
Read Cycle
194
AT8xC5122/23
PORT 2
PORT 0
ALE
PSEN
INSTR IN
OR SFR-P2
ADDRESS
Table 115. AC Parameters for a Variable Clock
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
PLPH
PLAZ
LHLL
AVLL
LLAX
LLPL
PXIX
AVIV
LLIV
PLIV
PXIZ
LHLL
T
T
LLAX
AVLL
A0-A7
T
ADDRESS A8-A15
AVIV
T
LLIV
Type
T
Max
Max
Max
Max
Max
T
Min
Min
Min
Min
Min
Min
LLPL
TPLAZ
PLIV
T
PLPH
INSTR IN
T
PXIX
Standard
clock
2T - x
4T - x
3T - x
3T - x
5T - x
T - x
T - x
T - x
T - x
12 T
x
x
CLCL
T
X2 Clock
PXIZ
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
T
T - x
A0-A7
PXAV
x
x
ADDRESS A8-A15
X parameter
15
20
20
35
15
25
45
15
45
10
0
INSTR IN
4202D–SCR–06/05
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns