NEC PD78081, PD78082 Service Manual

DATA SHEET

MOS INTEGRATED CIRCUIT

PD78081(A), 78082(A)

8-BIT SINGLE-CHIP MICROCONTROLLER

DESCRIPTION

The µPD78081(A) and 78082(A) are members of the µPD78083 Subseries of the 78K/0 Series microcontrollers.

These products are produced with a more stringent quality assurance program than that of the 78082 (standard models) (NEC classifies these products as “special products” by quality grade).

Besides a high-speed, high-performance CPU, these microcontrollers have on-chip ROM, RAM, I/O ports,

8-bit resolution A/D converter, timer, serial interface, interrupt control, and other peripheral hardware.

PD78P083(A) including a one-time PROM version which can operate in the same power supply voltage

The

range as a mask ROM version, and various development tools are available.

PD78081 and

The details of the functions are described in the following User’s Manuals. Be sure to read the documents before starting design.

PD78083 Subseries User’s Manual : IEU-1407

78K/0 Series User’s Manual Instructions : IEU-1372

FEATURES

• Internal ROM and RAM

Item

Part Number

PD78081(A) 8 Kbytes 256 bytes 44-pin plastic QFP (10 × 10 mm)

PD78082(A) 16 Kbytes 384 bytes

• Minimum instruction execution time can be changed from high-speed (0.4

Program Memory Data Memory

(ROM) (Internal High-speed RAM)

Package

s) to low-speed (12.8 µs)

• I/O ports: 33

• 8-bit resolution A/D converter : 8 channels

• Serial interface : 1 channel

3-wire serial I/O/UART

mode : 1 channel

• Timer : 3 channels

• Supply voltage : VDD = 1.8 to 5.5 V

APPLICATION FIELDS

Controllers for automobile electronic control systems, gas detector circuit-breakers, various types of safety equipment, etc.

In addition to the specified, however, the products, and their descriptions also apply to the

Document No. U12436EJ1V0DS00 (1st edition) Date Published July 1997 N Printed in Japan

PD78081(A) and 78082(A), this Data Sheet also describes the µPD78081(A2). Unless otherwise

PD78081(A) and 78082(A) are used throughout this Data Sheet as the representative

PD78081(A2).

The information in this document is subject to change without notice.

1997

ORDERING INFORMATION

Part Number Package

PD78081GB(A)-×××-3B4 44-pin plastic QFP (10 × 10 mm)

PD78081GB(A)-×××-3BS-MTX

PD78082GB(A)-×××-3B4 44-pin plastic QFP (10 × 10 mm)

PD78082GB(A)-×××-3BS-MTX

PD78081GB(A2)-×××-3B4 44-pin plastic QFP (10 × 10 mm)

Note Under planning

Note

44-pin plastic QFP (10 × 10 mm)

Note

44-pin plastic QFP (10 × 10 mm)

PD78081(A), 78082(A)

Caution

PD78081GB(A) and 78082GB(A) have two kinds of package (Refer to 11. PACKAGE DRAWINGS).

Please consult NEC’s sales representative for the available package.

Remark ××× indicates ROM code suffix.

QUALITY GRADE

Special

Please refer to “Quality Grades on NEC Semiconductor Devices” (Document No. C11531E) published by NEC Corporation to know the specification of quality grade on the devices and its recommended applications.

DIFFERENCES BETWEEN µPD78081 AND 78082, AND µPD78081(A) AND 78082(A)

Part Number Item Quality grade Standard Special Package • 42-pin plastic shrink DIP (600 mil) 44-pin plastic QFP (10 × 10 mm)

• 44-pin plastic QFP (10 × 10 mm)

PD78081, 78082

PD78081(A), 78082(A)

DIFFERENCES BETWEEN µPD78081(A) AND 78081(A2)

Part Number Item Supply voltage VDD = 1.8 to 5.5 V VDD = 5 V ±10% Minimum instruction execution 0.4 µs (at 5 MHz) 0.57 µs (at 7 MHz)

time Operating ambient temperature TA = –40 to 85˚C TA = –40 to +125˚C

Remark In addition to the above parameters, the supply current also differs. For details, refer to 10. ELECTRICAL

SPECIFICATIONS.

PD78081(A)

PD78081(A2)

PD78014

PD78002 PD78083

PD78002Y

100-pin

64-pin 64-pin 64-pin

42/44-pin

Control

Y subseries products are compatible with I

C bus.

A timer was added to the PD78054, and the external interface function was enhanced.

EMI noise reduction version of the PD78078.

ROM-less versions of the PD78078.

An A/D converter and 16-bit timer were added to the PD78002. An A/D converter was added to the PD78002. Basic subseries for control.

On-chip UART, capable of operating at a low voltage (1.8 V).

PD780018AY

100-pin Serial I/O of the PD78078Y was enhanced, and only selected functions are provided.

PD78078 PD78070A

PD78075B

PD78070AY

µµ

µµ µ µµ

Inverter control

PD78096464-pin

An A/D converter of the PD780924 was enhanced.

PD78078Y

PD78075BY

PD78018F

PD780001

PD78018FY PD78014Y

80-pin 80-pin

64-pin

78K/0

Series

Products in mass production

Products under development

EMI noise reduction version of the PD78054. UART and D/A converter were added to the PD78014, and I/O was enhanced.

Low-voltage (1.8 V) operation versions of the PD78014 with several ROM and RAM capacities available.

An A/D converter of the PD780024 was enhanced.

EMI noise reduction version of the PD78018F.

On-chip inverter control circuit and UART, EMI noise reduction version.

Serial I/O of the PD78018F was enhanced, EMI noise reduction version.

Serial I/O of the PD78054 was enhanced, EMI noise reduction version.

PD78005880-pin

µµ

PD780034 PD780024

PD78014H

PD780034Y PD780024Y

64-pin 64-pin 64-pin

µµ µµ

FIPTM drive

PD78044F

100-pin

80-pin 80-pin

The I/O and FIP C/D of the PD78044F were enhanced, Display output total: 53 The I/O and FIP C/D of the PD78044H were enhanced, Display output total: 48 N-ch open-drain input/output was added to the PD78044F, Display output total: 34 Basic subseries for driving FIP, Display output total: 34

µ µ

100-pin

PD78092464-pin

PD780308 PD78064B PD78064

100-pin 100-pin 100-pin

SIO of the PD78064 was enhanced, and ROM and RAM were expanded. EMI noise reduction version of the PD78064. Basic subseries for driving LCDs, On-chip UART.

PD780308Y

PD78064Y

LCD drive

PD78P0914

64-pin

On-chip PWM output, LV digital code decoder, Hsync counter.

PD78054

PD78054Y

PD78058FY

PD780058Y

Note

PD78058F

PD78044H

PD780228

PD780208

IEBusTM supported

PD78098B80-pin

EMI noise reduction version of the PD78098. The IEBus controller was added to the PD78054.

PD7809880-pin

Meter control

PD780973

80-pin

On-chip automobile meter driving controller/driver.

PD78081(A), 78082(A)

78K/0 SERIES DEVELOPMENT

The following shows the 78K/0 Series products development. Subseries names are shown inside frames.

Note Under planning

The following table shows the differences among subseries functions.

PD78081(A), 78082(A)

Function ROM Timer 8-bit

Subseries Name

ControlµPD78075B

PD78078

PD78070A – 61 2.7 V

PD780058

PD78058F

PD78054

PD780034

PD780024 8ch –

PD78014H 2ch 53

PD78018F

PD78014

PD780001 8 K – – 1ch 39 –

PD78002

PD78083 – 8ch 1ch (UART: 1ch) 33 1.8 V – InverterµPD780964 controlµPD780924 8ch – FIP drive

LCD drive

IEBus supportedµPD78098 Meter control LV

PD780208

PD780228

PD78044H

PD78044F

PD780308

PD78064B 32 K 2ch (UART: 1ch)

PD78064

PD78098B

PD780973

PD78P0914

Capacity 8-bit 16-bit Watch WDT A/D A/D D/A

32 K to 40 K 48 K to 60 K

24 K to 60 K 48 K to 60 K 16 K to 60 K 8 K to 32 K

8 K to 60 K 8 K to 32 K

8 K to 16 K

8 K to 32 K

32 K to 60 K 48 K to 60 K 32 K to 48 K 16 K to 40 K 48 K to 60 K

16 K to 32 K 40 K to 60 K 32 K to 60 K

24 K to 32 K 32 K 6ch – – 1ch 8ch – – 2ch 54 4.5 V

4ch 1ch 1ch 1ch 8ch – 2ch 3ch (UART: 1ch) 88 1.8 V

2ch 2ch

1ch – 53

3ch Note – 1ch – 8ch – 2ch (UART: 2ch) 47 2.7 V

2ch 1ch 1ch 1ch 8ch – – 2ch 74 2.7 V – 3ch – – 1ch 72 4.5 V 2ch 1ch 1ch 68 2.7 V

2ch 1ch 1ch 1ch 8ch – –

2ch 1ch 1ch 1ch 8ch – 2ch 3ch (UART: 1ch) 69 2.7 V

3ch 1ch 1ch 1ch 5ch – – 2ch (UART: 1ch) 56 4.5 V –

10-bit

– 8ch – 3ch (UART: 1ch, 51 1.8 V

8-bit Serial Interface I/O VDD

3ch (time-division UART: 1ch) 3ch (UART: 1ch) 69 2.7 V

time-division 3-wire: 1ch)

2ch 3ch (time-division UART: 1ch)

MIN.

Value

68 1.8 V

2.0 V

2.7 V

57 2.0 V –

External

Expansion

Available

Note 10-bit timer: 1 channel

OVERVIEW OF FUNCTION

PD78081(A), 78082(A)

Part Number

Item

Internal memory

Memory space General registers Minimum instruction execution time

Instruction set

I/O ports

A/D converter Serial interface

Timer

Timer output Clock output

Buzzer output Vectored

interrupt sources

Supply voltage Operating ambient temperature Package

ROM Internal high-speed RAM

Maskable Non-maskable Software

PD78081(A)

8 Kbytes 256 bytes 64 Kbytes 8 bits × 32 registers (8 bits × 8 registers × 4 banks) On-chip minimum instruction execution time selective function

0.4 µs/0.8 µs/1.6 µs/3.2 µs/6.4 µs/12.8 µs (at main system clock of 5.0 MHz)

• 16-bit operation

• Multiply/divide (8 bits × 8 bits,16 bits ÷ 8 bits)

• Bit manipulation (set, reset, test, boolean operation)

• BCD adjustment, etc. Total : 33

• CMOS input : 01

• CMOS I/O : 32

8-bit resolution × 8 channels 3-wire serial I/O/UART mode selectable : 1 channel

• 8-bit timer/event counter : 2 channels

• Watchdog timer : 1 channel

2 (8-bit PWM output)

19.5 kHz, 39.1 kHz, 78.1 kHz, 156 kHz, 313 kHz, 625 kHz, 1.25 MHz, 2.5 MHz,

5.0 MHz (at main system clock of 5.0 MHz)

1.2 kHz, 2.4 kHz, 4.9 kHz, 9.8 kHz (at main system clock of 5.0 MHz)

Internal : 8, external : 3 Internal : 1 1

DD = 1.8 to 5.5 V

A = –40 to +85°C

T 44-pin plastic QFP (10 × 10 mm)

16 Kbytes 384 bytes

PD78082(A)

Caution The supply voltage and other parameters of the µPD78081(A2) differ from those of the other models.

For details, refer to “DIFFERENCES BETWEEN

PD78081(A) AND 78081(A2)”.

PD78081(A), 78082(A)

CONTENTS

1. PIN CONFIGURATION (Top View) ................................................................................................... 7

2. BLOCK DIAGRAM ............................................................................................................................. 9

3. PIN FUNCTIONS .............................................................................................................................. 10

3.1 Port Pins................................................................................................................................................... 10

3.2 Non-port Pins .......................................................................................................................................... 11

3.3 Pin I/O Circuits and Recommended Connection of Unused Pins ................................................... 12

4. MEMORY SPACE............................................................................................................................. 14

5. PERIPHERAL HARDWARE FUNCTIONS ...................................................................................... 15

5.1 Ports..........................................................................................................................................................15

5.2 Clock Generator ......................................................................................................................................16

5.3 Timer/Event Counter...............................................................................................................................16

5.4 Clock Output Control Circuit................................................................................................................. 18

5.5 Buzzer Output Control Circuit .............................................................................................................. 18

5.6 A/D Converter .......................................................................................................................................... 19

5.7 Serial Interface ........................................................................................................................................ 20

6. INTERRUPT FUNCTIONS ............................................................................................................... 21

7. STANDBY FUNCTION ..................................................................................................................... 24

8. RESET FUNCTION........................................................................................................................... 24

9. INSTRUCTION SET.......................................................................................................................... 25

10. ELECTRICAL SPECIFICATIONS.................................................................................................... 28

11. PACKAGE DRAWINGS ................................................................................................................... 49

12. RECOMMENDED SOLDERING CONDITIONS .............................................................................. 51

APPENDIX A. DEVELOPMENT TOOLS .............................................................................................. 52

APPENDIX B. RELATED DOCUMENTS .............................................................................................. 54

1. PIN CONFIGURATION (Top View)

• 44-pin plastic QFP (10 × 10 mm)

PD78081GB(A)-×××-3B4

PD78081GB(A)-×××-3BS-MTX

PD78082GB(A)-×××-3B4

PD78082GB(A)-×××-3BS-MTX

PD78081GB(A2)-×××-3B4

P12/ANI2 P13/ANI3 P14/ANI4 P15/ANI5 P16/ANI6 P17/ANI7

P72/ASCK/SCK2

P71/T

D/SO2

D/SI2

P70/R P101/TI6/TO6 P100/TI5/TO5

Note

P11/ANI1

44 43 42 41 40 39 38 37 36 35 34

1 2 3 4 5 6 7 8 9 10 11

12 13 14 15 16 17 18 19 20 21 22

SSAVREFAVDD

P10/ANI0

VDDX1

X2ICRESET

33 32 31 30 29 28 27 26 25 24 23

PD78081(A), 78082(A)

P03/INTP3 P02/INTP2 P01/INTP1 P00 P37 P36/BUZ P35/PCL P34 P33 P32 NC

P50

P51

P52

P53

P54

P55

P56

Note Under planning

Cautions 1. Connect IC (Internally Connected) pin directly to V

2. Connect AV

3. Connect AV

4. Connect NC (Non-connection) pin to V

DD pin to VDD. SS pin to VSS.

SS for noise protection (It can be left open).

P57

SS.

P30

P31

PD78081(A), 78082(A)

ANI0 to ANI7 : Analog Input P100, P101 : Port10 ASCK : Asynchronous Serial Clock PCL : Programmable Clock

DD : Analog Power Supply RESET : Reset

REF : Analog Reference Voltage RxD : Receive Data

SS : Analog Ground SCK2 : Serial Clock

AV BUZ : Buzzer Clock SI2 : Serial Input IC : Internally Connected SO2 : Serial Output INTP1 to INTP3 : Interrupt from Peripherals TI5, TI6 : Timer Input NC : Non-connection TO5, TO6 : Timer Output P00 to P03 : Port0 TxD : Transmit Data P10 to P17 : Port1 V P30 to P37 : Port3 V

DD : Power Supply SS : Ground

P50 to P57 : Port5 X1, X2 : Crystal (Main System Clock) P70 to P72 : Port7

2. BLOCK DIAGRAM

PD78081(A), 78082(A)

P100/TI5/TO5

P101/TI6/TO6

SI2/R

XD/P70 XD/P71

SO2/T

SCK2/ASCK/P72

ANI0/P10 to

ANI7/P17

AVSS

AVREF

INTP1/P01 to

INTP3/P03

BUZ/P36

PCL/P35

8-bit TIMER/ EVENT COUNTER 5

8-bit TIMER/ EVENT COUNTER 6

WATCHDOG TIMER

SERIAL

INTERFACE 2

A/D CONVERTER

INTERRUPT CONTROL

BUZZER OUTPUT

CLOCK OUTPUT CONTROL

78K/0

CPU

CORE

RAM

VDD VSS

ROM

PORT 0

PORT 1

PORT 3

PORT 5

PORT 7

PORT 10

SYSTEM

CONTROL

P00 P01 to P03

P10 to P17

P30 to P37

P50 to P57

P70 to P72

P100, P101

RESET X1 X2

Remark The internal ROM and internal high-speed RAM capacities depend on the product.

PD78081(A), 78082(A)

3. PIN FUNCTIONS

3.1 Port Pins

Pin Name Input/Output Function After Reset Shared by: P00 Input Port 0 Input only Input — P01 Input/output 4-bit input/output port Input/output is specifiable Input INTP1 P02 bit-wise. When used as the INTP2 P03 input port, it is possible to INTP3

connect a pull-up resistor by software.

P10 to P17 Input/output Port 1 Input ANI0 to ANI7

8-bit input/output port Input/output is specifiable bit-wise. When used as the input port, it is possible to connect

a pull-up resistor by software. P30 to P34 Input/output Port 3 Input — P35 8-bit input/output port PCL P36 Input/output is specifiable bit-wise. BUZ P37 When used as the input port, it is possible to connect —

a pull-up resistor by software. P50 to P57 Input/output Port 5 Input —

8-bit input/output port

Can drive up to seven LEDs directly.

Input/output is specifiable bit-wise.

When used as the input port, it is possible to connect

a pull-up resistor by software. P70 Input/output Port 7 Input SI2/RxD P71 3-bit input/output port SO2/TxD P72 Input/output is specifiable bit-wise. SCK2/ASCK

When used as the input port, it is possible to connect

a pull-up resistor by software. P100 Input/output Port 10 Input TI5/TO5 P101 2-bit input/output port TI6/TO6

Input/output is specifiable bit-wise.

When used as the input port, it is possible to connect

a pull-up resistor by software.

Note

Note When P10/ANI0 to P17/ANI7 pins are used as the analog inputs for the A/D converter, set the port 1 to the

input mode. The on-chip pull-up resistor is automatically disabled.

PD78081(A), 78082(A)

3.2 Non-port Pins

Pin Name Input/Output Function After Reset Shared by: INTP1 Input External interrupt request input by which the active edge Input P01 INTP2 (rising edge, falling edge, or both rising and falling edges) can P02 INTP3 be specified. P03 SI2 Input Serial interface serial data input. Input P70/RxD SO2 Output Serial interface serial data output. Input P71/TxD SCK2 Input/Output Serial interface serial clock input/output. Input P72/ASCK RxD Input Asynchronous serial interface serial data input. Input P70/SI2 TxD Output Asynchronous serial interface serial data output. Input P71/SO2 ASCK Input Asynchronous serial interface serial clock input. Input P72/SCK2 TI5 Input External count clock input to 8-bit timer (TM5). Input P100/TO5 TI6 External count clock input to 8-bit timer (TM6). P101/TO6 TO5 Output 8-bit timer (TM5) output. Input P100/TI5 TO6 8-bit timer (TM6) output. P101/TI6 PCL Output Clock output. (for main system clock trimming) Input P35 BUZ Output Buzzer output. Input P36 ANI0 to ANI7 Input A/D converter analog input. Input P10 to P17 AV

REF Input A/D converter reference voltage input. — —

DD — A/D converter analog power supply. Connected to VDD.——

SS — A/D converter ground potential. Connected to VSS.——

RESET Input System reset input. — — X1 Input Main system clock oscillation crystal connection. — — X2 — —— V

DD — Positive power supply. — —

SS — Ground potential. — —

IC — Internal connection. Connect directly to V NC — Does not internally connected. Connect to V

(It can be left open)

SS.——

PD78081(A), 78082(A)

3.3 Pin I/O Circuits and Recommended Connection of Unused Pins

The input/output circuit type of each pin and recommended connection of unused pins are shown in Table 3-1. For the input/output circuit configuration of each type, refer to Figure 3-1.

Table 3-1. Input/Output Circuit Type of Each Pin

Pin Name I/O Recommended Connection for Unused Pins

P00 2 Input Connect to VSS. P01/INTP1 8-A Input/output Connect to VSS via a resistor individually. P02/INTP2 P03/INTP3 P10/ANI0 to P17/ANI7 11 Input/output Connect to VDD or VSS via a resistor individually. P30 to P32 5-A P33, P34 8-A P35/PCL 5-A P36/BUZ P37 P50 to P57 5-A P70/SI2/RxD 8-A P71/SO2/TxD 5-A P72/SCK2/ASCK 8-A P100/TI5/TO5 8-A P101/TI6/TO6 RESET 2 Input — AVREF — — Connect to VSS. AVDD Connect to VDD. AVSS Connect to VSS. IC Connect directly to VSS. NC Connect to VSS (It can be left open).

Input/Output Circuit Type

Figure 3-1. Pin Input/Output Circuits

PD78081(A), 78082(A)

Type 2

Schmitt-triggered input with hysteresis characteristic

Type 5-A

pullup enable

data

output disable

P-ch

N-ch

input enable

IN/OUT

Type 8-A

pullup enable

data

output disable

Type 11

pullup

enable

data

output disable

Comparator

input enable

P-ch

–

N-ch

REF

(threshold voltage)

P-ch

N-ch

P-ch

N-ch

P-ch

IN/OUT

P-ch

IN/OUT

4. MEMORY SPACE

The memory map of the µPD78081(A) and 78082(A) is shown in Figure 4-1.

Figure 4-1. Memory Map

FFFFH

Special function registers

(SFR) 256 × 8 bits

FF00H

Data memory space

mmmmH – 1

Program memory space

FEFFH

FEE0H FEDFH

mmmmH

nnnnH + 1

nnnnH

0000H

General-purpose registers

32 × 8 bits

Internal high-speed RAM

Use prohibited

Internal ROM

Note

nnnnH

1000H

0FFFH

0800H

07FFH

0080H 007FH

0040H 003FH

0000H

PD78081(A), 78082(A)

Program area

CALLF entry area

Program area

CALLT table area

Vector table area

Note The internal ROM and internal high-speed RAM capacities depend on the product (See the following table).

Part Number

PD78081(A) 1FFFH FE00H

PD78082(A) 3FFFH FD80H

Internal ROM Last Address Internal High-speed RAM Start Address

nnnnH mmmmH

5. PERIPHERAL HARDWARE FUNCTIONS

5.1 Ports

Input/output ports are classified into two types.

• CMOS input (P00) : 1

• CMOS input/output (P01 to P03, Port 1, Port 3, Port 5, Port 7, Port 10) : 32 Total : 33

Table 5-1. Functions of Ports

Port Name Pin Name Function

Port 0 P00 Input only.

P01 to P03 Input/output port. Input/output can be specified bit-wise.