Motorola 68HC11 series is a family of micro controllers , each device contains slightly different functional blocks , however they are all based around the same microprocessor namely the 6801 8-bit processor , therefore basic 6800/1 machine code will function on any of the devices in the range , what is different is the I/O features. The target system provided with these notes is the 'GBC11' which contains a 68HC11F1N4 device. This is a fairly advanced member of the HC11 range and has the following features
* MC68HC11 Cpu
* 512 Bytes Electrically Erasable PROM with protection
* 1024 Bytes of on board RAM
* Enhanced 16 Bit timer
* On board chip selects for expansion
* Real time Interrupt circuit
* 8 Bit Accumulator
* Synchronous Serial Peripheral Interface
* Asynchronous Serial communications Interface
* Power saving Modes
* 8 Channel 8 bit A/D converter
* Watchdog and clock monitor