T89C51RD2 ATMEL Corporation, T89C51RD2 Datasheet - Page 81

• Manufacturer Part Number: T89C51RD2
• Description: 0 to 40MHz Flash Programmable 8-bit Microcontroller
• Manufacturer: ATMEL Corporation

T89C51RD2
9.5.6. External Data Memory Read Cycle
9.5.7. Serial Port Timing - Shift Register Mode
81
T
T
T
T
T
XLXL
QVHX
XHQX
XHDV
XHDX
Symbol
T
T
T
T
T
PORT 0
PORT 2
QVHX
XHQX
XHDX
XHDV
XLXL
ALE
PSEN
RD
OR SFR-P2
ADDRESS
Symbol
Min
300
200
30
0
Table 45. AC Parameters for a Fix Clock
Table 44. Symbol Description
-M
A0-A7
T
LLAX
T
Max
AVWL
117
T
LLWL
T
AVDV
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
T
LLDV
ADDRESS A8-A15 OR SFR P2
Min
300
200
30
T
0
RLAZ
-L
T
RLRH
Parameter
Max
117
DATA IN
Rev. F - 15 February, 2001
T
T
WHLH
RHDX
Units
ns
ns
ns
ns
ns
T
RHDZ