MC68HC705MC4

The motorola MC68HC705MC4 microcontroller is a low-cost M68HC05 family EPROM microprocessor intended for use in industrial motor control and power supply applications. It features a 2-channel, 8-bit high speed PWM module (including a commutation mux for brushless permanent magnet motor control), a 6 input, 8-bit A/D to accommodate analog feedback signals, and an SCI to support multi-controller networking. This device is available in the 28-pin PDIP and 28-pin SOIC package.

The features of MC68HC705MC4 can be summarized as (1)low cost, HC05 core running at 3 MHz bus speed (at VDD = 5V +/- 10%); (2)28-pin PDIP, SOIC or windowed ceramic package. Low EMI emission pinout; (3)3584 Bytes of User EPROM (including eight user vectors of 2 Bytes each); (4)176 bytes of user RAM; (5)dual channel, high speed PWM featuring: 8-bit resolution, independent prescaler frequency selection and period counters, 2 frequency ranges, 9 steps in each: A: 183 Hz to 23.4 kHz, B: 122 Hz to 15.6 kHz, S/W programmable PWM polarity, dual S/W controllable PWM output mux (each PWM to 3 I/O); (6)8-bit +/- 1LSB A/D converter with 6 input mux. High and low references. Conversion rate = 10.7S; (7)16-bit timer with 2 input captures or 1 input capture plus 1 output; (8)compare. Resolution = 1.33 S. Input Capture active edge S/W selectable as rising, falling, or both; (9)15-stage multi-function Core Timer with timer overflow, real-time interrupt and watchdog; (10)asynchronous serial communications interface (SCI); (11)22 general purpose I/O lines, some shared with peripheral functions; (12)one 8-bit high source current I/O port (10 mA/pin @ VDD-2.0 V, 20 mA max/port) (Port A); (13)one high sink current (10mA @ 1.0 V) output pin (PB7); (14)mask, request, acknowledge, edge and sensitivity (edge- and level-sensitive or edge-sensitive only) control/status bits for IRQ interrupt; (15)on-chip oscillator for crystal/ceramic resonator; (16)mask selectable COP watchdog system; (17)power saving STOP and WAIT mode instructions (mask selectable STOP instruction disable); (18)illegal address reset; (19)steering diode on RESET Pin to VDD.

The absolute maximum ratings of MC68HC705MC4 are (1)supply voltage VDD: -0.3 to + 7.0V; (2)input voltage VIN: VSS - 0.3 to VDD + 0.3V; (3)self-check mode(IRQ pin only) VIN: VSS - 0.3 to 2*VDD + 0.3V; (4)current drain per pin excluding VDD and VSS I: 25 mA; (5)operating temperature range TA TL to TH °C, MC68HC705MC4 (Standard) 0 to +70°C, MC68HC705MC4 (Extended) -40 to +85°C, MC68HC705MC4 (Automotive) -40 to +105°C; (6)storage temperature range TSTG: -65 to +150°C.