The MC68HC705C8S is an 8-bit microcontroller unit (MCU) from the HC05 family, manufactured by Freescale Semiconductor (now NXP). It is a cost-effective and versatile microcontroller suitable for various embedded control applications. This MCU features a CPU, RAM, ROM (or EPROM/EEPROM), I/O ports, and timers all integrated into a single chip.

Applications

• Consumer electronics (remote controls, appliances)
• Automotive electronics (dashboard controls, sensors)
• Industrial control systems (motor control, process monitoring)
• Security systems (alarm systems, access control)
• Embedded control applications

Features

• 8-bit CPU (M68HC05 core)
• 8 KB ROM (or EPROM/EEPROM)
• 176 bytes RAM
• 24 bidirectional I/O lines
• 8-bit timer with prescaler
• Serial Communication Interface (SCI)
• On-chip oscillator
• Low-power operation
• Available in SOIC package

Benefits

• Integrated Solution: All essential components are integrated into a single chip, reducing the number of external components and simplifying system design.
• Versatile I/O: The numerous I/O lines allow for flexible connection to various peripherals and sensors.
• Efficient Timer: The on-chip timer facilitates precise timing and control operations.
• Serial Communication: The SCI enables communication with other devices and systems.
• Low-Power Operation: It can be used in battery-powered applications.

Technical Specifications

The MC68HC705C8S operates with a typical supply voltage of 5V. The clock frequency is usually in the MHz range. It contains 8KB of ROM for program storage and 176 bytes of RAM for data storage. The operating temperature range is typically from -40°C to +85°C. The SOIC package offers a compact footprint for space-constrained applications. Detailed memory maps, instruction sets, and electrical characteristics are available in the manufacturer's datasheet.