87C654 Philips Semiconductors, 87C654 Datasheet - Page 21
87C654
Manufacturer Part Number
87C654
Description
80C51 8-bit microcontroller 8K/16K/ 256 OTP/ I2C
Manufacturer
Philips Semiconductors
Datasheet
1.87C654.pdf
(28 pages)
- Current page: 21 of 28
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Philips Semiconductors
1996 Aug 16
CMOS single-chip 8-bit microcontroller
ALE/PROG:
ALE/PROG:
1
0
4–6MHz
4–6MHz
1
0
A0–A7
A0–A7
1
1
1
1
1
1
Figure 12. Programming Configuration
Figure 14. Program Verification
P1
RST
P3.6
P3.7
XTAL2
XTAL1
V
P1
RST
P3.6
P3.7
XTAL2
XTAL1
V
Figure 13. PROG Waveform
SS
SS
10 s MIN
25 PULSES
87C654
87C654
21
ALE/PROG
ALE/PROG
P2.0–P2.5
P2.0–P2.5
EA/V
EA/V
PSEN
PSEN
V
V
P2.7
P2.6
P2.7
P2.6
CC
PP
CC
PP
P0
P0
+5V
+5V
100 s+10
PGM DATA
+12.75V
25 100 s PULSES TO GROUND
0
1
0
A8–A13
PGM DATA
1
1
0
0 ENABLE
0
A8–A13
Product specification
87C654
SU00018
SU00276
SU00275
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