Description

The MC68HC908JK8CDWE is an electronic component model that belongs to the IC Chips product category. It is a member of the low-cost, high-performance M68HC08 Family of 8-bit microcontroller units (MCUs) based on the customer-specified integrated circuit (CSIC) design strategy. The MC68HC908JK8CDWE features the enhanced M68HC08 central processor unit (CPU08) and comes with a variety of modules, memory sizes and types, and package types.

Specifications and Features

- High-performance M68HC08 architecture
- Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
- Low-power design; fully static with stop and wait modes
- Maximum internal bus frequency:
       - 8-MHz at 5V operating voltage
       - 4-MHz at 3V operating voltage
- Oscillator options:
       - Crystal or resonator
       - RC oscillator
- 8,192 bytes user program FLASH memory with security1 feature
- 256 bytes of on-chip RAM
- Two 16-bit, 2-channel timer interface modules (TIM1 and TIM2) with selectable input capture, output compare, and PWM capability on each channel; external clock input option on TIM2
- 13-channel, 8-bit analog-to-digital converter (ADC)
- Serial communications interface module (SCI)
- 26 general-purpose input/output (I/O) ports:
       - 8 keyboard interrupt with internal pull-up
       - 11 LED drivers (sink)
       - 2 × 25mA open-drain I/O with pull-up
- Resident routines for in-circuit programming and EEPROM emulation
- System protection features:
       - Optional computer operating properly (COP) reset, driven by internal RC oscillator
       - Optional low-voltage detection with reset and selectable trip points for 3V and 5V operation
       - Illegal opcode detection with reset
       - Illegal address detection with reset
- Master reset pin with internal pull-up and power-on reset
- IRQ with schmitt-trigger input and programmable pull-up
- Available in 20-pin dual in-line package (PDIP), 20-pin small outline integrated package (SOIC), 28-pin PDIP, 28-pin SOIC, 32-pin shrink dual in line package (SDIP), and 32-pin low-profile quad flat pack (LQFP) options
- Specific features of the MC68HC908JK8CDWE in 28-pin packages are:
       - 23 general-purpose I/Os only
       - 7 keyboard interrupt with internal pull-up
       - 10 LED drivers (sink)
       - 12-channel ADC
       - Timer I/O pins on TIM1 only
- Specific features of the MC68HC908JK8CDWE in 20-pin packages are:
       - 15 general-purpose I/Os only
       - 1 keyboard interrupt with internal pull-up
       - 4 LED drivers (sink)
       - 10-channel ADC
       - Timer I/O pins on TIM1 only

Application Scenarios

The MC68HC908JK8CDWE is commonly used in various applications that require low-cost, high-performance microcontroller units. Some possible application scenarios include:
- Industrial control systems
- Automotive electronics
- Consumer electronics
- Home automation
- Internet of Things (IoT) devices

Comparison

Advantages:
- High-performance M68HC08 architecture for efficient processing
- Low-power design with stop and wait modes for energy efficiency
- Large user program FLASH memory and on-chip RAM for data storage
- Multiple timer interface modules and analog-to-digital converter for versatile functionality
- System protection features for reliable operation
- Different package options to suit different requirements

Disadvantages:
- Limited number of general-purpose I/Os in certain package options
- Limited number of keyboard interrupts and LED drivers in certain package options
- Limited timer I/O pins in certain package options