16-Bit MCU Handles DSP Chores

June 23, 2005

The 56F8000 targets a range of motor control and system control applications. Developed by Freescale, this chip keeps monetary and power costs low while delivering advanced peripheral control. The pulse-width modulators (PWMs) operate at three times

William G. Wong

The 56F8000 targets a range of motor control and system control applications. Developed by Freescale, this chip keeps monetary and power costs low while delivering advanced peripheral control.

The pulse-width modulators (PWMs) operate at three times the clock frequency. Each pair can generate differential switch frequencies. The application has cycle-by-cycle control over the PWMs, which also have multiple programmable fault ports and can operate while the CPU is sleeping.

The 12-bit analog-to-digital converter can support two conversions at a time. Pricing starts at $2.99.

Freescalewww.freescale.com56F8000 Specifications CPU 32-MHz 56800E hybrid core Flash 16-kbyte program w/security RAM 4-kbyte program/data Clock On-chip oscillator Timers 96-MHz, six-output PWM that can be center- or edge-aligned; four timers Analog Eight-channel, 12-bit ADC; two simultaneous conversions SerialSPI, serial port w/LIN support,I²CGPIO26 Power 0.026-mA min, 65-mA max Debug JTAG/OnCE Package 32-pin, SOIC, PDIP, 7- by 7-mm LQFP, lead free