80C31 Datasheet, PDF (22/30 Pages) NXP Semiconductors – CMOS single-chip 8-bit microcontrollers

Philips Semiconductors
CMOS single-chip 8-bit microcontrollers
Product specification
80C31/80C51/87C51
A0–A7
1
1
1
4–6MHz
1
ALE/PROG:
0
1
ALE/PROG:
0
A0–A7
1
1
1
4–6MHz
+5V
P1
RST
P3.6
P3.7
XTAL2
XTAL1
V_SS
V_CC
P0
87C51
EA/V_PP
ALE/PROG
PSEN
P2.7
P2.6
P2.0–P2.3
Figure 13. Programming Configuration
PGM DATA
+12.75V
25 100µs PULSES TO GROUND
0
1
0
A8–A11
SU00017
25 PULSES
10µs MIN
100µs+10
Figure 14. PROG Waveform
P1
RST
P3.6
P3.7
XTAL2
XTAL1
V_SS
+5V
V_CC
P0
87C51
EA/V_PP
ALE/PROG
PSEN
P2.7
P2.6
P2.0–P2.3
PGM DATA
1
1
0
0 ENABLE
0
A8–A11
Figure 15. Program Verification
SU00018
SU00019
1996 Aug 16
22