T89C51AC2-SLSIM View Datasheet(PDF) - Atmel Corporation

Part Name

Description

MFG CO.

T89C51AC2-SLSIM

Enhanced 8-bit Microcontroller with 32 KB Flash Memory

Atmel Corporation 

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Figure 14. External Data Read Waveforms

CPU Clock

ALE

RD 1

P0

DPL or Ri

D7:0

P2 P2

DPH or P22

Notes: 1. RD signal may be stretched using M0 bit in AUXR register.

2. When executing MOVX @Ri instruction, P2 outputs SFR content.

Figure 15. External Data Write Waveforms

CPU Clock

ALE

WR1

P0

P2 P2

DPL or Ri

D7:0

DPH or P22

Notes: 1. WR signal may be stretched using M0 bit in AUXR register.

2. When executing MOVX @Ri instruction, P2 outputs SFR content.

26 A/T89C51AC2

4127H–8051–02/08

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