83C453 Datasheet, PDF (23/26 Pages) NXP Semiconductors – 80C51 8-bit microcontroller family 8K/256 OTP/ROM, expanded I/O

Philips Semiconductors
80C51 8-bit microcontroller family
8K/256 OTP/ROM, expanded I/O
Preliminary specification
83C453/87C453
A0–A7
1
1
1
4–6MHz
P1
RST
P3.6
P3.7
XTAL2
XTAL1
V_SS
+5V
V_CC
P0
PGM DATA
87C453
EA/V_PP
ALE/PROG
PSEN
P2.7
P2.6
+12.75V
15 TO 25 100µs PULSES TO GROUND
0
1
0
P2.0–P2.4
A8–A12
Figure 25. Programming Configuration
SU00159
1
ALE/PROG:
0
1
ALE/PROG:
0
A0–A7
1
1
1
4–6MHz
15 TO 25 PULSES
10µs MIN
100µs+10
Figure 26. PROG Waveform
P1
RST
P3.6
P3.7
XTAL2
XTAL1
V_SS
+5V
V_CC
P0
87C453
EA/V_PP
ALE/PROG
PSEN
P2.7
P2.6
P2.0–P2.4
Figure 27. Program Verification
PGM DATA
1
1
0
0 ENABLE
0
A8–A12
SU00161
SU00160
1998 Apr 23
23