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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD78C14(A)
8-BIT SINGLE-CHIP MICROCONTROLLER (WITH A/D CONVERTER)
The µPD78C14(A) is a single-chip, CMOS 8-bit microcontroller in which a 16-bit ALU, a ROM, a RAM, an A/D converter,
a multifunction timer/event counter, and a serial interface are all integrated. Moreover, a 48-Kbyte external expansion
memory (ROM/RAM) can be connected.
Since the µPD78C14(A) uses the CMOS construction, its operations are performed with low power consumption. By
using the standby function, functions such as data retention are performed with lower power consumption.
For details on functions, refer to the User’s Manual listed below. Please read it before starting design work.
87AD series µPD78C18 User’s Manual: IEU-1314
FEATURES
High reliability as compared with µPD78C14
159 instructions: 87AD instruction set
Multiply and divide instructions, 16-bit arithmetic operation instructions
Instruction cycle: 0.8 µs at 15 MHz
Internal ROM: 16384 W x 8
Internal RAM: 256 W x 8
Direct addressing to an external memory (ROM/RAM) up to 64 Kbytes
Highly accurate 8-bit A/D converter: Eight analog inputs
General-purpose serial interface: Asynchronous, synchronous, and I/O interface modes
Multifunction 16-bit timer/event counter
Two 8-bit timers
I/O lines: 44
Interrupt functions: Three external, eight internal
• Non-maskable interrupt: 1
• Maskable interrupts: 10
Zero-cross detection function (two inputs)
Standby functions: HALT mode, Hardware/software STOP mode
ORDERING INFORMATION
Part number
µPD78C14G(A)-xxx-36
µPD78C14GF(A)-xxx-3BE
µPD78C14L(A)-xxx
Package
64-pin plastic QUIP
64-pin plastic QFP (14 x 20 mm)
68-pin plastic QFJ (950 x 950 mil)
Quality grade
Special
Special
Special
Remark xxx is a ROM code suffix.
Please refer to “Quality grade on NEC Semiconductor Devices” (Document number IEI-1209) published by
NEC Corporation to know the specification of quality grade on the devices and its recommended applications.
Document No. IC-2813B
(O.D. No. IC-8242B)
Date Published May 1995 P
Printed in Japan
The information in this document is subject to change without notice.
*H The mark shows revised points.
©© 11999914

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Pin Configuration (Top View)
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0/TxD
PC1/RxD
PC2/SCK
PC3/INT2
PC4/TO
PC5/CI
PC6/CO0
PC7/CO1
NMI
INT1
MODE1
RESET
MODE0
X2
X1
VSS
1 64
2 63
3 62
4 61
5 60
6 59
7 58
8 57
9 56
10 55
11 54
12 53
13 52
14 51
15 50
16 49
17 48
18 47
19 46
20 45
21 44
22 43
23 42
24 41
25 40
26 39
27 38
28 37
29 36
30 35
31 34
32 33
VDD
STOP
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
PF7
PF6
PF5
PF4
PF3
PF2
PF1
PF0
ALE
WR
RD
AVDD
VAREF
AN7
AN6
AN5
AN4
AN3
AN2
AN1
AN0
AVSS
µPD78C14(A)
PD3
PD4
PD5
PD6
PD7
STOP
VDD
PA0
PA1
PA2
PA3
PA4
PA5
51 50 49 48 47 46 454443 42 41 40 39 38 37 36 35 34 33
52 32
53 31
54 30
55 29
56 28
57 27
58 µ PD78C14GF(A)-XXX-3BE
26
59 25
60 24
61 23
62 22
63 21
641 2 3 4 5 6 7 8 9 10 11 12 13 14 1516 1718 19 20
AN4
AN3
AN2
AN1
AN0
AVSS
VSS
X1
X2
MODE0
RESET
MODE1
INT1
2

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µPD78C14(A)
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0/TxD
PC1/RxD
PC2/SCK
PC3/INT2
IC
PC4/TO
PC5/CI
PC6/CO0
9 8 7 6 5 4 3 2 1 68 67 66 6564 63 62 61
10 60
11 59
12 58
13 57
14 56
15 55
16 54
17 53
18
µ PD78C14L(A)-XXX
52
19 51
20 50
21 49
22 48
23 47
24 46
25 45
26 44
2728 29 30 3132 33 34 35 36 37 38 39 4041 42 43
PD1
PD0
PF7
PF6
PF5
PF4
PF3
PF2
PF1
PF0
ALE
WR
RD
AVDD
IC
VAREF
AN7
3