Freescale Semiconductor, Inc.
EPROM/OTPROM (PROM)
EPROM/OTPROM (PROM) Programming
R2
J1
2
NC
R3 10 K
1
3
3
1
NC
NC
NC
NC
10 K
R1
+5 V
A
B
C
38
39
40
+12 V
NC
2.7 K
R5
C2
+5 V
S2
OUT
RESET
1.0 µF
10 M
Y1
R13
10 K
R4
10 K
C3
22 pF
C4
22 pF
P2
+5 V
2.0 MHz
IRQ
2
+5 V
S5
D
E
F
G
H
I
S3
S4
S6
PD5
PD4
PD3
PD2
PD7
34
33
32
31
36
J
K
L
+5 V
+5 V
1
2
R10*
470
R12
10 K
VERF
R7
R6
R9
R8
J2
10 K 10 K
10 K 10 K
TCAP
TCMP
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
DS2*
+5 V
37
35
12
13
14
15
16
17
18
19
11
10
9
(VERF)
M
(PROG)
C6
N
NC
NC
0.1 µF
PROG
DS1*
(A5)
(A4)
(A3)
(A2)
(A1)
(A0)
7
39
38
PA5
PA4
PA3
PA2
PA1
PA0
PB0
PB1
PB2
PB3
PB4
PD7
8
TCMP
PD5
PD4
PD3
PD2
PD1
PD0
PC0
PC1
PC2
9
37
36
35
PD5
PD4
PD3
R11*
470
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PC0
PC1
PC2
10
11
12
13
14
15
16
17
U3
34 PD2
44-LEAD PLCC
SOCKET
+5 V
(D0)
(D1)
(D2)
(D3)
(D4)
33
32
31
30
PD1
8
PD0
(A8)
(A9)
7
6
5
(A10)
29
4
28
27
26
25
24
30
29
23
22
21
PC3
PC4
PD1
PD0
PC5
PC6
PC7
O
P
NC
NC
Q
R
S
V
SS
20
Figure 9-2. PROM Programming Circuit (Continued)
MC68HC705C8A — Rev. 3
MOTOROLA
Technical Data
EPROM/OTPROM (PROM)
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