Members of the new PIC18F family of flash microcontrollers feature a single-phase motor control peripheral for developers integrating motor control into their designs. This motor control kernel uses standard APIs and includes on-chip pulse width modulation (PWM) to provide speed control for single-phase induction motors.
The PIC18F family employs Microchip Technology's Programmable Motor Processor Technology, which provides modulated output over a range of 0Hz to 127Hz and has a predefined variable frequency (V/F) curve that can be programmed to suit the application.
The family can also be used as an off-the-shelf solution for simple motor control applications. They're pin- and code-compatible with Microchip Technology's current 18- and 48-pin portfolio, allowing designers to reuse software and hardware from existing platforms.
In addition to the single-phase (open loop) motor control and self-reprogrammable flash memory functions, the MCU family features two 10-bit PWMs, 256-bytes of on-board, data EEPROM, and up to 10 MIPS performance at 40MHz. The PIC18F processors also feature three 16-bit timers, an A/D converter with up to eight channels, 10-bit resolution, an addressable USART module supporting RS-485 and RS-232, a programmable 16-level low-voltage detection module (PLVD), and an operating voltage range between 2V and 5.5V.
Also available are a PIC18F2539 evaluation kit, an MPLAB in-circuit debugger, and Pro Mate II, a modular device programmer.
Chips in the PIC18F family cost between $4.28 and $5.15 in volume. They're available now in 28-pin SOIC, SDIP, 40-pin PDIP, and 44-lead TCFP and QFN packages.