at89c51ic2-slsim ATMEL Corporation, at89c51ic2-slsim Datasheet - Page 137

• Manufacturer Part Number: at89c51ic2-slsim
• Description: At89c51ic2 8-bit Flash Microcontroller With 2-wire Interface
• Manufacturer: ATMEL Corporation

External Data Memory Read Cycle
Serial Port Timing - Shift
Register Mode
4301D–8051–02/08
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
20
50
117
0
DATA IN
T
Min
T
300
200
WHLH
30
RHDX
0
X Parameter for -L
Range
133
50
20
T
0
RHDZ
-L
Max
117
Units
ns
ns
ns
ns
ns
Units
137
ns
ns
ns
ns
ns