SECTION 1INTRODUCTION:

The MC68HC11F1 high-performance microcontroller unit (MCU) is an enhanced derivative of the M68HC11 family of microcontrollers and includes many advanced features. This MCU, with a nonmultiplexed expanded bus, is characterized by high speedand low power consumption. The fully static design allows operation at frequenciesfrom 4 MHz to dc. 

Features:

• M68HC11 Central Processing Unit (CPU)

• Power Saving STOP and WAIT Modes

• 512 Bytes Electrically Erasable Programmable Read-Only Memory (EEPROM)

• 1024 Bytes RAM, Data Retained During Standby

• Nonmultiplexed Address and Data Buses

• Enhanced 16-Bit Timer

• Three Input Capture (IC) Channels

• Four Output Compare (OC) Channels

• One Additional Channel, Selectable as Fourth IC or Fifth OC

• 8-Bit Pulse Accumulator

• Real-Time Interrupt Circuit

• Computer Operating Properly (COP) Watchdog

• Enhanced Asynchronous Nonreturn to Zero (NRZ) Serial Communications Interface (SCI)

• Enhanced Synchronous Serial Peripheral Interface (SPI)

• Eight-Channel 8-Bit Analog-to-Digital (A/D) Converter

• Four Chip-Select Signal Outputs with Programmable Clock Stretching

— Two I/O Chip Selects

— One Program Chip Select

— One General-Purpose Chip Select

• Available in 68-Pin Plastic Leaded Chip Carrier (PLCC) and 80-Pin Plastic QuadFlat Pack (QFP)