NEC PD754244 Manuals

Manuals and User Guides for NEC PD754244. We have 1 NEC PD754244 manual available for free PDF download: User Manual

NEC PD754244 User Manual (306 pages)

4-Bit Single-Chip Microcontrollers

Brand: NEC | Category: Computer Hardware | Size: 1.89 MB

Table of Contents
9
Chapter 1 General

17
- Functional Outline
  
  18
- Ordering Information
  
  19
- Differences between Series Products
  
  19
- Block Diagram
  
  20
- Pin Configuration (Top View)
  
  21
Chapter 2 Pin Functions

24
- Pin Functions of Μ PD754244
  
  24
  - Pin Functions of Digital I/O Ports
    24
  - Functions of Non-Port Pins
    25
- Description of Pin Functions
  
  26
  - P30 to P33 (Port 3), P60 to P63 (Port 6), P80 (Port 8)
    26
  - P70 to P73 (Port 7)
    26
  - PTO0 to PTO2
    26
  - Int0
    27
  - KR4 to KR7
    27
  - Krren
    27
  - TH00 and TH01
    27
  - CL1 and CL2 ( Μ PD754144 Only)
    28
  - Ref
    28
  - Reset
    28
  - X1 and X2 ( Μ PD754244 Only)
    28
  - Vss
    29
- Pin I/O Circuits
  
  30
  - VDD
    30
  - Av Ref
    31
- Processing of Unused Pins
  
  31
  - Recommended Connection of Unused Pins
    31
Chapter 3 Features of Architecture and Memory Map

32
Chapter 4 Internal Cpu Function

60
Chapter 5 Eeprom

80
Chapter 6 Peripheral Hardware Function

88
Chapter 7 Interrupt and Test Functions

186
- Configuration of Interrupt Controller
  
  186
- Types of Interrupt Sources and Vector Table
  
  188
  - Interrupt Vector Table
    189
- Hardware Controlling Interrupt Function
  
  190
- Interrupt Sequence
  
  197
  - Interrupt Servicing Sequence
    197
- Nesting Control of Interrupts
  
  198
  - Nesting of Interrupt with High Priority
    198
  - Interrupt Nesting by Changing Interrupt Status Flag
    199
- Servicing of Interrupts Sharing Vector Address
  
  200
  - Identifying Interrupt Sharing Vector Address
    200
- Machine Cycles until Interrupt Servicing
  
  202
- Effective Usage of Interrupts
  
  204
- Application of Interrupt
  
  204
- Test Function
  
  212
Chapter 8 Standby Function

215
Chapter 9 Reset Function

227
- Configuration and Operation of Reset Function
  
  227
- Watchdog Flag (WDF), Key Return Flag (KRF)
  
  231
Chapter 10 Mask Options

233
- Pin Mask Options
  
  233
  - Mask Option of P70/KR4 to
    233
  - RESET Pin Mask Option
    233
- Oscillation Stabilization Wait Time Mask Option
  
  233
  - Selection of Mask Options
    233
Chapter 11 Instruction Set

234
- Unique Instructions
  
  234
- Instruction Set and Operation
  
  237
- Opcode of each Instruction
  
  248
- Instruction Function and Application
  
  254
  - Transfer Instructions
    255
  - Table Reference Instructions
    261
  - Bit Transfer Instructions
    265
  - Operation Instructions
    266
  - Accumulator Manipulation Instructions
    272
  - Increment/Decrement Instructions
    273
  - Compare Instructions
    274
  - Carry Flag Manipulation Instructions
    275
  - Memory Bit Manipulation Instructions
    276
  - Branch Instructions
    279
  - Subroutine/Stack Control Instructions
    283
  - Interrupt Control Instructions
    287
  - Input/Output Instructions
    288
  - CPU Control Instruction
    289
  - Special Instructions
    290
Appendix A Development Tools

293
Appendix B Ordering Mask Rom

297
Appendix C Instruction Index

298
- Instruction Index (by Function)
  
  298
  - C.1 Instruction Index (by Function)
    298
- Instruction Index (Alphabetical Order)
  
  301
Appendix D Hardware Index

304
Appendix E Revision History

306

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NEC PD754244 Manuals

NEC PD754244 User Manual (306 pages)

Table of Contents

Chapter 1 General

Functional Outline

Ordering Information

Differences between Series Products

Block Diagram

Pin Configuration (Top View)

Chapter 2 Pin Functions

Pin Functions of Μ PD754244

Description of Pin Functions

Pin I/O Circuits

Processing of Unused Pins

Chapter 3 Features of Architecture and Memory Map

Bank Configuration of Data Memory and Addressing Modes

Bank Configuration of General-Purpose Registers

Memory-Mapped I/O

Chapter 4 Internal Cpu Function

Function to Select Mki and Mkii Modes

Program Counter (PC)

Program Memory (ROM)

Data Memory (RAM)

General-Purpose Registers

Accumulator

Stack Pointer (SP) and Stack Bank Select Register (SBS)

Program Status Word (PSW)

Bank Select Register (BS)

Chapter 5 Eeprom

EEPROM Configuration

EEPROM Features

EEPROM Write Control Register (EWC)

Interrupt Related to EEPROM Control

EEPROM Manipulation Method

Cautions on EEPROM Writing

Chapter 6 Peripheral Hardware Function

Digital I/O Ports

Clock Generator

Basic Interval Timer/Watchdog Timer

Timer Counter

Programmable Threshold Port (Analog Input Port)

Bit Sequential Buffer

Chapter 7 Interrupt and Test Functions

Configuration of Interrupt Controller

Types of Interrupt Sources and Vector Table

Hardware Controlling Interrupt Function

Interrupt Sequence

Nesting Control of Interrupts

Servicing of Interrupts Sharing Vector Address

Machine Cycles until Interrupt Servicing

Effective Usage of Interrupts

Application of Interrupt

Test Function

Chapter 8 Standby Function

Settings and Operating Statuses of Standby Mode

Releasing Standby Mode

Operation after Release of Standby Mode

Application of Standby Mode

Chapter 9 Reset Function

Configuration and Operation of Reset Function

Watchdog Flag (WDF), Key Return Flag (KRF)

Chapter 10 Mask Options

Pin Mask Options

Oscillation Stabilization Wait Time Mask Option

Chapter 11 Instruction Set

Unique Instructions

Instruction Set and Operation

Opcode of each Instruction

Instruction Function and Application

Appendix A Development Tools

Appendix B Ordering Mask Rom

Appendix C Instruction Index

Instruction Index (by Function)

Instruction Index (Alphabetical Order)

Appendix D Hardware Index

Appendix E Revision History

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