MC68B912B32 datasheet, PDF - EEWORLD Datasheet

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MC68B912B32: Description16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80; Categorysemiconductor The embedded processor and controller; File Size462KB，128 Pages; ManufacturerMotorola ( NXP ); Websitehttps://www.nxp.com

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MC68B912B32 Overview

16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80

MC68B912B32 Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	80
Maximum operating temperature	85 Cel
Minimum operating temperature	-40 Cel
Maximum supply/operating voltage	5.5 V
Minimum supply/operating voltage	4.5 V
Rated supply voltage	5 V
External data bus width	16
Number of input and output buses	63
Line speed	8 MHz
Processing package description	14 × 14 MM, 2.20 MM HEIGHT, 0.65 MM PITCH, Square Flat Package-80
state	DISCONTINUED
Craftsmanship	HCMOS
packaging shape	SQUARE
Package Size	FLATPACK
surface mount	Yes
Terminal form	GULL WING
Terminal spacing	0.6500 mm
terminal coating	NOT SPECIFIED
Terminal location	Four
Packaging Materials	Plastic/Epoxy
Temperature level	INDUSTRIAL
ADC channel	Yes
Address bus width	16
Number of digits	16
Maximum FCLK clock frequency	16 MHz
Microprocessor type	Microcontroller
PWM channel	Yes
ROM programming	FLASH

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MOTOROLA

SEMICONDUCTOR

TECHNICAL DATA

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by MC68HC912B32TS/D

MC68HC912B32

Technical Summary

16-Bit Microcontroller

1 Introduction

The MC68HC912B32 microcontroller unit (MCU) is a 16-bit device composed of standard on-chip pe-

ripherals including a 16-bit central processing unit (CPU12), 32-Kbyte flash EEPROM, 1-Kbyte RAM,

768-byte EEPROM, an asynchronous serial communications interface (SCI), a serial peripheral inter-

face (SPI), an 8-channel timer and 16-bit pulse accumulator, an 8-bit analog-to-digital converter (ADC),

a four-channel pulse-width modulator (PWM), and a J1850-compatible byte data link communications

module (BDLC). The chip is the first 16-bit microcontroller to include both byte-erasable EEPROM and

flash EEPROM on the same device. System resource mapping, clock generation, interrupt control and

bus interfacing are managed by the Lite integration module (LIM). The MC68HC912B32 has full 16-bit

data paths throughout, however, the multiplexed external bus can operate in an 8-bit narrow mode so

single 8-bit wide memory can be interfaced for lower cost systems.

1.1 Features

• 16-Bit CPU12

— Upward Compatible with M68HC11 Instruction Set

— Interrupt Stacking and Programmer’s Model Identical to M68HC11

— 20-Bit ALU

— Instruction Queue

— Enhanced Indexed Addressing

— Fuzzy Logic Instructions

• Multiplexed Bus

— Single Chip or Expanded

— 16/16 Wide or 16/8 Narrow Modes

• Memory

— 32-Kbyte Flash EEPROM with 2-Kbyte Erase-Protected Boot Block

— 768-B yte EEPROM

— 1-Kbyte RAM with Single-Cycle Access for Aligned or Misaligned Read/Write

• 8-Channel, 8-Bit Analog-to-Digital Converter

• 8-Channel Timer

— Each Channel Fully Configurable as Either Input Capture or Output Compare

— Simple PWM Mode

— Modulo Reset of Timer Counter

• 16-Bit Pulse Accumulator

— External Event Counting

— Gated Time Accumulation

• Pulse-Width Modulator

— 8-Bit, 4-Channel or 16-Bit, 2-Channel

— Separate Control for Each Pulse Width and Duty Cycle

This document contains information on a new product. Specifications and information herein are subject to change without notice.

TABLE OF CONTENTS

Section

Page

1.1

1.2

1.3

Introduction

2.1

2.2

2.3

2.4

2.5

3.1

3.2

3.3

3.4

3.5

5.1

5.2

5.3

5.4

6.1

6.2

7.1

7.2

7.3

7.4

7.5

7.6

7.7

7.8

7.9

7.10

8.1

8.2

9.1

9.2

9.3

9.4

9.5

9.6

10.1

10.2

10.3

10.4

10.5

10.6

Features ...................................................................................................................................... 1

Ordering Information ................................................................................................................... 2

MC68HC912B32 Block Diagram ................................................................................................. 5

Central Processing Unit

Programming Model .................................................................................................................... 6

Data Types .................................................................................................................................. 7

Addressing Modes .......................................................................................................................7

Indexed Addressing Modes ......................................................................................................... 8

Opcodes and Operands .............................................................................................................. 8

Pinout and Signal Descriptions

MC68HC912B32 Pin Assignments ............................................................................................. 9

Power Supply Pins .................................................................................................................... 10

Signal Descriptions .................................................................................................................... 11

Port Signals ............................................................................................................................... 15

Port Pull-Up, Pull-Down and Reduced Drive .............................................................................19

Operating Modes and Resource Mapping

Operating Modes .......................................................................................................................25

Background Debug Mode .......................................................................................................... 26

Internal Resource Mapping ....................................................................................................... 28

Memory Maps ............................................................................................................................ 31

Bus Control and Input/Output

Detecting Access Type from External Signals .......................................................................... 32

Registers ................................................................................................................................... 32

Flash EEPROM

Overview ................................................................................................................................... 37

Flash EEPROM Control Block ...................................................................................................37

Flash EEPROM Array ............................................................................................................... 37

Flash EEPROM Registers ......................................................................................................... 37

Operation ...................................................................................................................................40

Programming the Flash EEPROM ............................................................................................ 42

Erasing the Flash EEPROM ...................................................................................................... 44

Program/Erase Protection Interlocks ......................................................................................... 46

Stop or Wait Mode ..................................................................................................................... 46

Test Mode .................................................................................................................................46

EEPROM

EEPROM Programmer’s Model ................................................................................................47

EEPROM Control Registers ...................................................................................................... 48

Resets and Interrupts

Exception Priority ......................................................................................................................52

Maskable Interrupts ................................................................................................................... 52

Interrupt Control and Priority Registers .....................................................................................53

Resets ....................................................................................................................................... 54

Effects of Reset .........................................................................................................................54

Register Stacking ......................................................................................................................55

Clock Functions

Clock Sources ...........................................................................................................................57

Computer Operating Properly (COP) ........................................................................................ 57

Real-Time Interrupt ...................................................................................................................57

Clock Monitor ............................................................................................................................57

Clock Function Registers .......................................................................................................... 58

Clock Divider Chains ................................................................................................................. 60

MC68HC912B32

MC68HC912B32TS/D

MOTOROLA

TABLE OF CONTENTS (Continued)

Section

Page

PWM Register Description ........................................................................................................ 65

PWM Boundary Cases .............................................................................................................. 72

Standard Timer Module

Timer Registers .........................................................................................................................74

Timer Operation in Modes ......................................................................................................... 82

Serial Interface

Block Diagram ...........................................................................................................................83

Serial Communication Interface (SCI) ....................................................................................... 83

Serial Peripheral Interface (SPI) ................................................................................................ 90

Port S ........................................................................................................................................ 96

Byte Data Link Communications Module (BDLC)

Features ....................................................................................................................................98

BDLC Operating Modes ............................................................................................................ 98

Loopback Modes .......................................................................................................................99

BDLC Registers .........................................................................................................................99

J1850 Bus Errors ..................................................................................................................... 106

Analog-To-Digital Converter

108

Functional Description ............................................................................................................. 108

ATD Registers ......................................................................................................................... 108

ATD Mode Operation .............................................................................................................. 114

Development Support

115

Instruction Queue .................................................................................................................... 115

Background Debug Mode ........................................................................................................115

Breakpoints .............................................................................................................................123

Instruction Tagging .................................................................................................................. 127

11.1

11.2

Pulse-Width Modulator

12.1

12.2

13.1

13.2

13.3

13.4

14.1

14.2

14.3

14.4

14.5

15.1

15.2

15.3

16.1

16.2

16.3

16.4

MOTOROLA

MC68HC912B32

MC68HC912B32TS/D

MC68B912B32 Related Products

	MC68B912B32	MC68C912B32FU8	MC68HC912B32TS	MC68HC912B32	MC68HC912B32FU8
Description	16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80	16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80	16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80	16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80	16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80
Number of functions	1	1	1	1	1
Number of terminals	80	80	80	80	80
Maximum operating temperature	85 Cel	85 Cel	85 Cel	85 Cel	85 Cel
Minimum operating temperature	-40 Cel	-40 Cel	-40 Cel	-40 Cel	-40 Cel
Maximum supply/operating voltage	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Minimum supply/operating voltage	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V
Rated supply voltage	5 V	5 V	5 V	5 V	5 V
External data bus width	16	16	16	16	16
Number of input and output buses	63	63	63	63	63
Line speed	8 MHz	8 MHz	8 MHz	8 MHz	8 MHz
Processing package description	14 × 14 MM, 2.20 MM HEIGHT, 0.65 MM PITCH, Square Flat Package-80	14 × 14 MM, 2.20 MM HEIGHT, 0.65 MM PITCH, Square Flat Package-80	14 × 14 MM, 2.20 MM HEIGHT, 0.65 MM PITCH, Square Flat Package-80	14 × 14 MM, 2.20 MM HEIGHT, 0.65 MM PITCH, Square Flat Package-80	14 × 14 MM, 2.20 MM HEIGHT, 0.65 MM PITCH, Square Flat Package-80
state	DISCONTINUED	DISCONTINUED	DISCONTINUED	DISCONTINUED	DISCONTINUED
Craftsmanship	HCMOS	HCMOS	HCMOS	HCMOS	HCMOS
packaging shape	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE
Package Size	FLATPACK	FLATPACK	FLATPACK	FLATPACK	FLATPACK
surface mount	Yes	Yes	Yes	Yes	Yes
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
Terminal spacing	0.6500 mm	0.6500 mm	0.6500 mm	0.6500 mm	0.6500 mm
terminal coating	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
Terminal location	Four	Four	Four	Four	Four
Packaging Materials	Plastic/Epoxy	Plastic/Epoxy	Plastic/Epoxy	Plastic/Epoxy	Plastic/Epoxy
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
ADC channel	Yes	Yes	Yes	Yes	Yes
Address bus width	16	16	16	16	16
Number of digits	16	16	16	16	16
Maximum FCLK clock frequency	16 MHz	16 MHz	16 MHz	16 MHz	16 MHz
Microprocessor type	Microcontroller	Microcontroller	Microcontroller	Microcontroller	Microcontroller
PWM channel	Yes	Yes	Yes	Yes	Yes
ROM programming	FLASH	FLASH	FLASH	FLASH	FLASH

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