at89c51re2-slsem ATMEL Corporation, at89c51re2-slsem Datasheet - Page 157

• Manufacturer Part Number: at89c51re2-slsem
• Description: At89c51re2 8-bit Flash Microcontroller
• Manufacturer: ATMEL Corporation

Shift Register Timing
Waveforms
External Clock Drive
Waveforms
140
AT89C51RE2
INSTRUCTION
ALE
CLOCK
OUTPUT DATA
WRITE to SBUF
INPUT DATA
CLEAR RI
T
QVXH
0
Table 105. AC Parameters for a Fix Clock
Table 106. AC Parameters for a Variable Clock
T
Symbol
Symbol
XHDV
T
T
T
T
T
T
T
T
T
T
QVHX
XHQX
XHDX
XHDV
QVHX
XHQX
XHDX
XHDV
XLXL
XLXL
0.45V
1
0
V
VALID
T
CC
XLXL
-0.5V
Type
Max
Min
Min
Min
Min
T
XHQX
2
1
VALID
0.2V
Standard
10 T - x
10 T - x
Clock
0.7V
2 T - x
12 T
T
3
XHDX
CC
x
2
VALID
CC
Min
-0.1
T
300
200
30
CHCL
0
X2 Clock
-M
5 T - x
4
5 T- x
T - x
3
6 T
VALID
x
X Parameter For
5
4
T
VALID
CLCX
-M Range
133
Max
50
20
117
0
6
5
VALID
T
CLCL
Min
300
200
30
0
X Parameter For
7
6
T
VALID
-L Range
CLCH
T
133
CHCX
50
20
0
SET TI
SET RI
-L
8
7
Max
VALID
117
7663B–8051–03/07
Units
ns
ns
ns
ns
ns
Units
ns
ns
ns
ns
ns