Product Summary

The MC68HC705X32CFU4 is a low-cost single chip microcomputer. This 8-bit MCU contains an on-board controller area network module (MCAN), complete with interface circuitry, comprising output drivers, input comparators and a VDD/2 generator. In addition, the MC68HC705X32CFU4 contains an on-chip oscillator, CPU, RAM, ROM, EEPROM, A/D converter, pulse length modulated outputs, I/O, serial communications interface, programmable timer system and watchdog. The fully static design allows operation at frequencies down to dc, reducing power consumption to a few micro-amps.

Parametrics

MC68HC705X32CFU4 absolute maximum ratings: (1)Supply voltage, VDD: – 0.5 to +7.0 V; (2)Input voltage, VIN: VSS – 0.5 to VDD + 0.5 V; (3)Operating temperature range, TA: –40 to +125℃; (4)Storage temperature range TSTG – 65 to +150℃; (5)External oscillator frequency, fOSC: 22 MHz.

Features

MC68HC705X32CFU4 features: (1)352 bytes of RAM; (2)15102 bytes of user ROM plus 16 bytes of user vectors; (3)256 bytes of byte erasable EEPROM with internal charge pump and security bit; (4)Write/erase protect bit for 224 of the 256 bytes EEPROM; (5)Bootstrap firmware; (6)Power saving STOP, WAIT and SLOW modes ; (7)Three 8-bit parallel I/O ports and one 8-bit input-only port; wired-OR interrupt capability on all port B pins; (8)Motorola controller area network (MCAN) with line interface circuitry; (9)Software option available to output the internal E-clock to port pin PC2; (10)16-bit timer with 2 input captures and 2 output compares; (11)Computer operating properly (COP) watchdog timer; (12)Serial communications interface system (SCI) with independent transmitter/receiver baud rate selection; receiver wake-up function for use in multi-receiver systems; (13)8 channel A/D converter; (14)2 pulse length modulation systems which can be used as D/A converters; (15)One interrupt request input plus 4 on-board hardware interrupt sources; (16)2.2 MHz bus speed.

Diagrams

MC68HC705X32CFU4 block diagram

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