Document No.
IC-2763B
(O. D. No.
IC-7628D)
Date Published November 1993 P
Printed in Japan
NEC Corporation 1990
DATA SHEET
MOS INTEGRATED CIRCUIT
PD75328
4-BIT SINGLE-CHIP MICROCOMPUTER
The mark 5 shows the major revised points.
DESCRIPTION
The
PD75328 is one of the 75X Series 4-bit single-chip microcomputer, and has a data processing
capability comparable to that of an 8-bit microcomputer.
In addition to high-speed operation with 0.95
s minimum instruction execution time for the CPU, the
PD75328 can also process data in 1-, 4-, and 8-bit units. Therefore, as a 4-bit single-chip microcomputer
chip having a built-in LCD controller/driver and A/D converter, its data processing capability is the highest
in its class in the world.
The
PD75P328 with one-time PROM, which is replaced with the internal mask ROM for a
PD75328,
is applicable for evaluating systems under development, or for small-scale production of developed
systems.
"Detailed functions are described in the following user's manual. Be sure to read it for designing."
"
PD75328 User's Manual: IEM-5045"
FEATURES
Capable of high-speed operation and variable instruction execution time to power save
0.95
s, 1.91
s, 15.3
s (Main system clock: operating at 4.19 MHz)
122
s (Subsystem clock: operating at 32.768 kHz)
75X architecture comparable to that for an 8-bit microcomputer is employed
Built-in programmable LCD controller/driver
Built-in 8-bit resolution A/D converter:
6 channels
Clock operation at reduced power dissipation: 5
A TYP. (operating at 3 V)
Timer function: 3 channels
Interrupt functions especially enhanced for applications, such as remote control receiver
Pull-up resistors can be provided for 35 I/O lines
Built-in NEC standard serial bus interface (SBI)
APPLICATIONS
Cameras, blood pressure gauges, airconditioners, etc.
The information in this document is subject to change without notice.
ORDERING INFORMATION
Part Number
Package
Quality Grade
PD75328GC-xxx-3B9
80-pin plastic QFP (
s
s
14mm)
Standard
Remarks: xxx is ROM code number.
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.
2
PD75328
Including the pins
which also serve
as LCD drive pins.
Excluding the
pins which is
specifically pro-
vided for driving
LCD.
FUNCTIONAL OUTLINE (1/2)
Item
Function
Number of Basic
41
Instructions
Instruction
0.95, 1.91, and 15.3
s, (Main system clock: operating at 4.19 MHz)
Execution Time
122
s (Subsystem clock: operating at 32.768 kHz)
ROM
8064
8-bit
RAM
512
4-bit
General-Purpose
4-bit manipulation: 8
4 banks, 8-bit manipulation: 4
4 banks
Registers
I/O Line
8
CMOS Input pins
Internal pull-up resistor
specification by software
44
20
CMOS input/output pins
is possible (except P00).
8
CMOS output pins
Also serve as segment pins
8
N-ch open-drain
Withstand voltage: 10V
input/output
Internal pull-up resistor
specification by mask option
is possible.
LCD Controller/
LCD drive output pins
Driver
Segment output pins: 20 (CMOS output pins: 8)
Common output pins: 4
Capable of driving up to 20
4 segments
Display output mode: Static, 1/2, 1/3, 1/4 duty
A/D Converter
8-bit resolution x 6 channels (successive approximation type)
Operating voltage V
DD
= 3.5 to 6.0 V
A/D conversion speed 40.1
s (operating at 4.19 MHz)
8-bit timer/event counter
Clock source: 4 steps
Event count is possible
8-bit basic interval timer
Timer
3 chs
Reference time generation (1.95, 7.82, 31.3, 250 ms: operating at 4.19
MHz)
Can be used as watchdog timer
Clock timer
0.5 second interval generation
Count clock source slectable (4.19 MHz/32.768 kHz)
Clock advance mode (3.9 ms time interval generation)
Buzzer output (2 kHz)
Clock synchronized serial interface
Serial
Internal NEC standard serial bus interface (SBI mode)
Interface
3-line serial I/O mode ... MSB/LSB first selectable
2-line serial I/O mode
Bit Sequential
Special bit manipulation memory: 16 bits
Buffer
Clock Output
,
524, 262, 65.5 kHz (Main system clock: 4.19 MHz)
(PCL)
Buzzer Output
2 kHz (with main system clock or subsystem clock operated)
(BUZ)
Vector Interrupt
External: 3
Internal: 3
Test Input
External: 1
Internal: 1
Internal
Memory
3
PD75328
FUNCTIONAL OUTLINE (2/2)
Item
Function
System Clock
Main system clock generation ceramic/crystal oscillator; 4.194304 MHz
Generator
Subsystem clock generation crysal oscillator: 32.768 kHz
Standby
STOP/HALT mode
Operating
40 to +85
C
Temperature Range
Operating Supply
V
DD
= 2.7 to 6.0 V
Voltage
Package
80-pin plastic QFP (
s
s
14 mm)
4
PD75328
CONTENTS
1.
PIN CONFIGURATION (TOP VIEW) ........................................................................................ 6
2.
BLOCK DIAGRAM ......................................................................................................................7
3.
PIN FUNCTIONS ........................................................................................................................8
3.1
PORT PINS ........................................................................................................................................ 8
3.2
NON PORT PINS ............................................................................................................................ 10
3.3
PIN INPUT/OUTPUT CIRCUITS ................................................................................................... 12
3.4
RECOMMENDED PROCESSING OF UNUSED PINS .................................................................. 14
3.5
SELECTION OF MASK OPTION ................................................................................................... 15
3.6
NOTES ON USING THE P00/INT4, AND RESET PINS .............................................................. 15
4.
MEMORY CONFIGURATION ................................................................................................. 16
5.
PERIPHERAL HARDWARE FUNCTIONS ............................................................................... 18
5.1
PORTS ............................................................................................................................................. 18
5.2
CLOCK GENERATOR CIRCUIT ..................................................................................................... 19
5.3
CLOCK OUTPUT CIRCUIT ............................................................................................................. 20
5.4
BASIC INTERVAL TIMER .............................................................................................................. 21
5.5
WATCH TIMER ............................................................................................................................... 22
5.6
TIMER/EVENT COUNTER ............................................................................................................. 22
5.7
SERIAL INTERFACE ....................................................................................................................... 24
5.8
LCD CONTROLLER/DRIVER ......................................................................................................... 26
5.9
A/D CONVERTER .......................................................................................................................... 28
5.10 BIT SEQUENTIAL BUFFER .... 16 BITS ....................................................................................... 29
6. INTERRUPT FUNCTIONS ......................................................................................................... 29
7. STANDBY FUNCTIONS ............................................................................................................ 31
8. RESET FUNCTION .................................................................................................................... 32
9.
INSTRUCTION SET ................................................................................................................. 34
10. ELECTRICAL SPECIFICATIONS ............................................................................................. 40
11. CHARACTERISTIC CURVES (REFERENCE VALUE) ............................................................ 53
12. PACKAGE DRAWINGS ........................................................................................................... 59
13. RECOMMENDED SOLDERING CONDITIONS ...................................................................... 61
5
PD75328
APPENDIX A. COMPARISON OF FEATURES BETWEEN PD75328 AND
PD75308 ........ 62
APPENDIX B. DEVELOPMENT TOOLS ...................................................................................... 63
APPENDIX C. RELATED DOCUMENTS ..................................................................................... 64
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