The MC68HC705C8CFB is an 8-bit microcontroller unit (MCU) originally manufactured by Motorola/Freescale and now supplied by Rochester Electronics. It belongs to the MC68HC05 family, known for its cost-effectiveness and use in a variety of embedded control applications.

Applications

• Consumer electronics (e.g., remote controls, small appliances).
• Industrial control systems (e.g., motor control, process monitoring).
• Automotive applications (e.g., dashboard controls, sensor interfaces).
• Security systems (e.g., alarm panels).
• Instrumentation and measurement equipment.

Features

• 8-bit CPU core based on the MC68HC05 architecture.
• 8 KB of on-chip ROM/EPROM/EEPROM for program storage. The 'CFB' suffix implies a windowed ceramic package for EPROM, although Rochester may supply an EEPROM replacement.
• 352 bytes of RAM for data storage.
• 20 programmable I/O lines for interfacing with external devices.
• 8-bit timer with prescaler for timing and counting functions.
• Serial Communication Interface (SCI) for asynchronous serial communication (UART).
• On-chip oscillator for generating the system clock.
• Low-voltage inhibit (LVI) circuit to prevent operation at low voltage levels.

Benefits

• Cost-effective solution for embedded control applications.
• Easy to use due to the simple architecture and instruction set.
• Versatile due to its flexible I/O and peripheral features.
• Low power consumption for battery-powered applications.
• Suitable for a wide range of applications.

Additional Details

The MC68HC705C8CFB typically operates at a clock frequency of 4 MHz. It has 20 programmable I/O lines, allowing for flexible interfacing with external devices. The serial communication interface supports asynchronous serial communication using the UART protocol. The device is generally packaged in a ceramic DIP (Dual In-line Package) or similar for UV EPROM erasure. Refer to the Rochester Electronics datasheet for specific details regarding memory type, operating temperature, and pinout configurations.