AT89C51ID2-SMSIM ATMEL [ATMEL Corporation], AT89C51ID2-SMSIM Datasheet - Page 147

• Manufacturer Part Number: AT89C51ID2-SMSIM
• Description: 8-bit Flash Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

External Data Memory Write
Cycle
External Data Memory Read Cycle
Serial Port Timing - Shift
Register Mode
4289A–8051–09/03
PORT 0
PORT 2
PORT 0
PORT 2
PSEN
ALE
PSEN
ALE
WR
RD
OR SFR-P2
OR SFR-P2
ADDRESS
ADDRESS
Table 103. Symbol Description
Symbol
T
T
T
T
T
QVHX
XHQX
XHDX
XHDV
XLXL
A0-A7
A0-A7
T
T
LLAX
T
T
LLAX
AVWL
AVWL
T
T
LLWL
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
T
AVDV
T
LLDV
ADDRESS A8-A15 OR SFR P2
ADDRESS A8-A15 OR SFR P2
T
T
QVWX
RLAZ
T
QVWH
T
T
DATA OUT
WLWH
RLRH
DATA IN
T
T
T
WHLH
WHLH
RHDX
AT89C51ID2
T
T
RHDZ
WHQX
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