DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD78C14(A)
8-BIT SINGLE-CHIP MICROCONTROLLER (WITH A/D CONVERTER)
The
µ
PD78C14(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
µ
PD78C14(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
µ
PD78C18 User’s Manual: IEU-1314
FEATURES
High reliability as compared with
µ
PD78C14
159 instructions: 87AD instruction set
Multiply and divide instructions, 16-bit arithmetic operation instructions
Instruction cycle: 0.8
µ
s 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
µ
PD78C14G(A)-xxx-36
µ
PD78C14GF(A)-xxx-3BE
µ
PD78C14L(A)-xxx
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.
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
The information in this document is subject to change without notice.
Document No. IC-2813B
(O.D. No. IC-8242B)
Date Published May 1995 P
Printed in Japan
H
The mark
*
shows revised points.
©
©
1991
1994
µ
PD78C14(A)
CONTENTS
1.
2.
DIFFERENCES BETWEEN
µ
PD78C14(A) AND
µ
PD78C14 ...................................................6
PIN FUNCTIONS ......................................................................................................................7
2.1
2.2
2.3
Pin Function List.........................................................................................................................7
Pin Input/Output Circuits ...........................................................................................................9
Recommended Connections for Unused Pins....................................................................... 13
3.
INSTRUCTION SET ................................................................................................................14
3.1
3.2
3.3
Operand Expression Format/Description Method .................................................................14
Instruction Code Description ..................................................................................................16
Instruction Execution Time......................................................................................................17
4.
5.
6.
7.
8.
LIST OF MODE REGISTERS .................................................................................................29
ELECTRICAL SPECIFICATIONS ..........................................................................................30
CHARACTERISTIC CURVES (reference value) ...................................................................41
PACKAGE DRAWINGS .........................................................................................................44
RECOMMENDED SOLDERING CONDITIONS .....................................................................47
APPENDIX DEVELOPMENT TOOLS ............................................................................................49
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