CIE Components in Electronics
Microchip is expanding its 8-bit PIC microcontroller (MCU) portfolio with the PIC12(L)F157X family, which features multiple 16-bit PWMs with an assortment of analogue peripherals and serial communications in an 8-pin package. These MCUs deliver three full-featured 16-bit PWMs with independent timers, for applications where high resolution is needed, such as LED lighting, stepper motors, battery charging and other general-purpose applications.
In addition to standard and centre-aligned PWM output modes, the peripheral also has four compare modes and can serve as an additional 16-bit timer.
The Complementary Waveform Generator (CWG), in combination with the 16-bit PWMs, can be used to create half-bridge and full-bridge drive control. The CWG is a powerful waveform generator, which can generate complementary waveforms with fine control of key parameters such as polarity, dead band and emergency shutdown states. According to Microchip it provides a cost-effective solution, saving both board space and component cost when driving FETs in motor-control and power-conversion applications. The CWG and 16-bit PWMs are Core Independent Peripherals (CIP) which are coupled with the 10-bit ADCs, comparator and 5-bit DAC Analogue Peripherals to enable closed-loop feedback and control. The PIC12F157X MCUs are suited for a wide range of applications, such as indoor/outdoor LED lighting, and RGB LED colour mixing; consumer applications such as electric razors and radio-control toys; and automotive interior LED lighting.
The PIC12F1572 enables communication with an EUSART, at the lowest price-point in the PIC MCU portfolio. The addition of the EUSART enables general-purpose serial communication and LIN for automotive and industrial control. The integrated 10-bit ADCs enable human-interface/touch applications using Microchip’s capacitive mTouch sensing solution. In addition, the PIC12F157X offers non-volatile data storage via High Endurance Flash (HEF) memory. The “LF” versions feature low-power technology, for active currents of less than 35 µA/MHz and sleep currents down to 20 nA, which is ideal for battery-powered applications.
Microchip’s full suite of development tools supports the PIC12F157X MCUs.
