87C575 Philips Semiconductors, 87C575 Datasheet - Page 35

• Manufacturer Part Number: 87C575
• Description: 80C51 8-bit microcontroller family 8K/256 OTP/ROM/ROMless/ 4 comparator/ failure detect circuitry/ watchdog timer
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1998 May 01
80C51 8-bit microcontroller family
8K/256 OTP/ROM/ROMless, 4 comparator, failure detect circuitry, watchdog timer
ALE/PROG:
ALE/PROG:
1
0
4–6MHz
4–6MHz
1
0
A0–A7
A0–A7
0
1
1
0
1
1
Figure 34. Programming Configuration
Figure 36. Program Verification
P1
RST
P3.6
P3.7
XTAL2
XTAL1
V
P1
RST
P3.6
P3.7
XTAL2
XTAL1
V
Figure 35. PROG Waveform
SS
SS
10 s MIN
25 PULSES
87C575
87C575
35
ALE/PROG
ALE/PROG
P2.0–P2.4
P2.0–P2.4
EA/V
EA/V
PSEN
PSEN
V
P2.7
P2.6
V
P2.7
P2.6
CC
PP
PP
P0
CC
P0
+5V
+5V
100 s+10
PGM DATA
1
1
0
0 ENABLE
0
A8–A12
PGM DATA
+12.75V
25 100 s PULSES TO GROUND
0
1
0
A8–A12
SU00250
80C575/83C575/
SU00249
Product specification
SU00018
87C575