P80C550 查看數據表（PDF） - Philips Electronics

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P80C550

80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless, 8 channel 8 bit A/D, watchdog timer

Philips Electronics 

Philips Semiconductors

80C51 8-bit microcontroller family

4K/128 OTP/ROM/ROMless, 8 channel 8 bit A/D, watchdog timer

Product specification

80C550/83C550/87C550

A0–A7

1

1

1

4–6MHz

1

ALE/PROG:

0

1

ALE/PROG:

0

A0–A7

1

1

1

4–6MHz

P3

RST

P1.0

P1.1

XTAL2

XTAL1

AVSS

VSS

+5V

AVCC

VCC

P0

87C550

EA/VPP

ALE/PROG

PSEN

P2.7

P2.6

P2.0–P2.4

PGM DATA

+12.75V

25 100µs PULSES TO GROUND

0

1

0

A8–A11

Figure 17. Programming Configuration

SU00205

25 PULSES

10µs MIN

100µs+10

Figure 18. PROG Waveform

P3

RST

P1.0

P1.1

XTAL2

XTAL1

AVSS

VSS

+5V

AVCC

VCC

P0

87C550

EA/VPP

ALE/PROG

PSEN

P2.7

P2.6

P2.0–P2.4

Figure 19. Program Verification

PGM Data

1

1

0

0 ENABLE

0

A8–A11

SU00206

SU00018

1998 May 01

23

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