MC68HC705C Motorola, MC68HC705C Datasheet - Page 104

• Manufacturer Part Number: MC68HC705C
• Description: HCMOS Microcontroller Unit
• Manufacturer: Motorola

EPROM/OTPROM (PROM)
Technical Data
104
Notes:
1. The asterisk (*) denotes option T
2. Unless otherwise specified, resistors are in ohms,
3. Device type numbers shown in circuit are for
command only.
reference only. Device type number varies
with manufacturer.
5% 1/4 W; capacitors are in F; voltages are dc.
+12 V
–12 V
GND
+5 V
V
20
PP
3
2
5
6
8
7
1
P3
4
2
3
5
1
P1
RXD
CTS
DSR
DCD
DTR
GND
GND
TXD
Figure 9-2. PROM Programming Circuit
3
2
+12 V
+5 V
MC145406
16
1
OFF
OFF
U4
ON
ON
–12 V
9
8
EPROM/OTPROM (PROM)
14
15
S1
+5 V
+V
(A9)
(A12)
(A8)
(A10)
(A11)
C5
0.1 F
6
DC-DC CONVERTER
VR1 NMA0512S
(ENABLE)
V
(OPTIONAL)
–V
CC
26
27
28
20
25
24
23
22
21
1
4
2
1
GND
V
NC
PGM
CE
V
A8
A9
A10
A11
A12
OE
5
2
0 V
PP
CC
+12 V
–12 V
GND
2764
U1
14
PD1
PD0
1N4001
D1
D0
D2
D4
D6
A0
A2
A3
A4
A5
A6
A7
D1
D3
D5
D7
A1
10
11
12
13
15
16
17
18
19
9
8
7
6
5
4
3
(A0)
(A1)
(A2)
(A3)
(A4)
(A5)
(A6)
(A7)
(D0)
(D1)
(D2)
(D3)
(D4)
(D5)
(D6)
(D7)
V
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PP
10 K
R15
MC68HC705C8A — Rev. 2.0
14
30
29
10
12
13
15
16
17
18
19
11
3
9
8
7
6
5
4
PD1
PD0
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
V
PP
V
DD
40-PIN DIP
40
SOCKET
U2
V
SS
20
RESET
TCMP
OSC2
TCAP
OSC1
PD5
PD7
PD4
PD3
PD2
PC5
PC2
PC4
PC7
MOTOROLA
IRQ
PC6
PC0
PC3
PC1
+5 V
+
C1
100 F
38
37
36
33
32
31
23
22
28
27
26
25
24
21
39
35
34
2
1
(A8)
(A9)
(A10)
(A11)
(A12)
G
M
N
A
B
C
D
E
F
H
K
L
O
Q
R
S
J
P
I