HC08A Datasheet | Next Electromics

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HC08A Microcontroller Technical Summary

Overview

The HC08A is a versatile 8-bit microcontroller from Motorola's HC08 family, designed for embedded control applications. It combines high performance with low power consumption, making it suitable for a wide range of industrial, automotive, and consumer applications. The microcontroller features an enhanced M68HC08 architecture with improved memory organization and peripheral integration.

With its comprehensive set of I/O capabilities and built-in peripherals, the HC08A provides an efficient solution for cost-sensitive applications requiring reliable control and processing capabilities. The device includes multiple communication interfaces, analog-to-digital conversion, and flexible timing functions.

Features

8-bit M68HC08 CPU core with enhanced instruction set
32KB Flash memory with read-while-write capability
1KB RAM for data storage and processing
Multi-function timer module with input capture/output compare
10-bit Analog-to-Digital Converter (ADC) with 8 channels
Controller Area Network (CAN) 2.0B interface
Serial Peripheral Interface (SPI) and Serial Communication Interface (SCI)
Up to 56 general-purpose I/O pins with programmable pull-ups
On-chip clock generator with PLL for flexible clock options
Low-power modes (Wait and Stop) for power-sensitive applications
Operating voltage range: 2.7V to 5.5V
Operating temperature range: -40°C to +85°C

Applications

The HC08A microcontroller is designed for a broad range of embedded control applications, including:

Automotive control systems (body electronics, lighting control)
Industrial automation (sensors, actuators, motor control)
Consumer appliances (white goods, power tools)
Building automation (HVAC, security systems)
Medical devices (portable monitoring equipment)
Point-of-sale terminals and peripheral devices

Pin Assignments and Functions

Power Management Pins

VDD/VSS: Main power supply (2.7-5.5V) and ground
VDDA/VSSA: Analog power supply and ground for ADC
VDDAREF: Analog reference voltage supply

Clock and Reset Pins

OSC1/OSC2: Crystal oscillator or external clock input
RST: Active-low reset input with internal pull-up

I/O Ports

Port A (PTA7-PTA0): General-purpose I/O with interrupt capability
Port B (PTB7-PTB0): Multiplexed with ADC input channels
Port C (PTC5-PTC0): General-purpose I/O
Port D (PTD7-PTD0): General-purpose I/O with high current drive
Port E (PTE7-PTE0): Multiplexed with serial communication functions
Port F (PTF6-PTF0): General-purpose I/O with timer functions
Port G (PTG2-PTG0): Keyboard interrupt inputs
Port H (PTH1-PTH0): Additional keyboard interrupt inputs

Special Function Pins

IRQ1: External interrupt input
CANTx/CANRx: CAN bus transmit and receive
VREFH/VREFL: ADC reference voltage inputs
CGMXFC: External filter capacitor for clock generator

Electrical Characteristics

Parameter	Conditions	Min	Typ	Max	Unit
Operating Voltage	Full functionality	2.7	3.3/5.0	5.5	V
Operating Current	8MHz, 5V	-	10	15	mA
Standby Current	Stop mode	-	1	5	µA
Input High Voltage	VDD = 5V	3.5	-	-	V
Input Low Voltage	VDD = 5V	-	-	1.5	V
I/O Pin Sink Current	Single pin	-	-	25	mA
ADC Resolution	10-bit	-	-	±2	LSB