Introduction
●The MC68HC11A8, MC68HC11A1, and MC68HC11A0 high-performance microcontroller units (MCUs) are based on the M68HC11 Family. These high speed, low power consumption chips have multiplexed buses and a fully static design. The chips can operate at frequencies from 3 MHz to dc. The three MCUs are created from the same masks; the only differences are the value stored in the CONFIG register, and whether or not the ROM or EEPROM is tested and guaranteed.
●Features
●• M68HC11 CPU
●• Power Saving STOP and WAIT Modes
●• 8 Kbytes ROM
●• 512 Bytes of On-Chip EEPROM
●• 256 Bytes of On-Chip RAM (All Saved During Standby)
●• 16-Bit Timer System
●— 3 Input Capture Channels
●— 5 Output Compare Channels
●• 8-Bit Pulse Accumulator
●• Real-Time Interrupt Circuit
●• Computer Operating Properly (COP) Watchdog System
●• Synchronous Serial Peripheral Interface (SPI)
●• Asynchronous Nonreturn to Zero (NRZ) Serial Communications Interface (SCI)
●• 8-Channel, 8-Bit Analog-to-Digital (A/D) Converter
●• 38 General-Purpose Input/Output (I/O) Pins
●— 15 Bidirectional I/O Pins
●— 11 Input-Only Pins and 12 Output-Only Pins (Eight Output-Only Pins in 48-Pin Package)
●• Available in 48-Pin Dual In-Line Package (DIP) or 52-Pin Plastic Leaded Chip Carrier (PLCC)