89C51IC2-CM ATMEL [ATMEL Corporation], 89C51IC2-CM Datasheet - Page 137
![no-image](/images/no-image-200.jpg)
89C51IC2-CM
Manufacturer Part Number
89C51IC2-CM
Description
8-bit Flash Microcontroller with 2-wire Interface
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.89C51IC2-CM.pdf
(146 pages)
- Current page: 137 of 146
- Download datasheet (2Mb)
External Data Memory Read Cycle
Serial Port Timing - Shift
Register Mode
4301A–8051–01/04
PORT 0
PORT 2
ALE
PSEN
RD
OR SFR-P2
ADDRESS
Table 99. Symbol Description
Table 100. AC Parameters for a Fix Clock
Table 101. AC Parameters for a Variable Clock
Symbol
Symbol
T
T
T
T
T
T
T
T
T
T
QVHX
XHQX
XHDX
XHDV
QVHX
XHQX
XHDX
XHDV
XLXL
XLXL
Symbol
T
T
T
T
T
QVHX
XHQX
XHDX
XHDV
XLXL
A0-A7
Type
Max
Min
Min
Min
Min
T
LLAX
T
AVWL
T
LLWL
Parameter
Serial port clock cycle time
Output data set-up to clock rising edge
Output data hold after clock rising edge
Input data hold after clock rising edge
Clock rising edge to input data valid
Standard
10 T - x
10 T - x
Clock
2 T - x
T
12 T
AVDV
x
T
Min
LLDV
300
200
30
0
ADDRESS A8-A15 OR SFR P2
X2 Clock
-M
T
5 T - x
5 T- x
RLAZ
T - x
6 T
x
X Parameter for -
T
M Range
RLRH
133
Max
50
20
117
0
DATA IN
T
Min
T
300
200
WHLH
30
RHDX
X Parameter for -L
0
Range
AT89C51IC2
133
50
20
T
0
RHDZ
-L
Max
117
Units
ns
ns
ns
ns
ns
Units
137
ns
ns
ns
ns
ns
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