GENERAL DESCRIPTION
The MC68HC05CL48 HCMOS Microcontroller is a member of the M68HC05 family of low cost single chip microcontrollers. It is particularly suitable as a Caller ID telephone controller. This 8-bit microcontroller unit (MCU) contains on-chip oscillator, CPU, RAM, ROM, I/O, Timer, Watchdog Timer, SPI, A/D, Caller ID subsystem, LCD driver and a 32kHz PLL.

FEATURES
• Industry standard M68HC05 8-bit CPU core
• 32kHz PLL to generate the 3.6MHz system clock
• On-chip clock generator can be driven by crystal or external clock
• 47.5k-bytes of user ROM
• 2k-bytes of user RAM (64 bytes for stack)
• 16-bit Timer with 2 input captures and 2 output compares, the two output compare are used for interrupt generation only
• 15-stage Multi-function Timer
• One second Watch Timer
• COP (Computer Operating Properly) Watchdog Reset
• Serial Peripheral Interface (SPI)
• Four channel 8-bit A/D Converter
• Hardware Caller-ID subsystem
• 45 x 16 or 53 x 8 LCD driver
• 24 Bidirectional I/O lines
• Three software programmable external interrupts in addition to the standard IRQ interrupt.
• Five keyboard interrupts.
• Power saving STOP and WAIT modes
• Available in 112-pin TQFP package