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Microchip delivers 8bit PIC MCU family

Posted: 01 Apr 2014  Print Version  Bookmark and Share

Keywords:microcontrollers  analogue  Microchip  pin 

Microchip Technology Inc. introduced the PIC16(L)F170X and PIC16(L)F171X family of 8bit microcontrollers, which combine a set of intelligent analogue and core independent peripherals, along with cost-effective pricing and eXtreme Low Power (XLP) technology.

Available in 14pin, 20pin, 28pin and 40pin/44pin packages, the 11-member PIC16F170X/171X family of MCUs integrate two Op Amps to drive analogue control loops, sensor amplification and basic signal conditioning, while reducing system cost and board space. These new devices also offer built-in Zero Cross Detect (ZCD) to simplify TRIAC control and minimise the EMI caused by switching transients.

Additionally, these are the first PIC16 MCUs with peripheral pin select, a pin-mapping feature that gives designers the flexibility to designate the pinout of many peripheral functions. The PIC16F170X/171X are general-purpose MCUs that are ideal for a broad range of applications, such as consumer (home appliances, power tools, electric razors), portable medical (blood-pressure meters, blood-glucose meters, pedometers), LED lighting, battery charging, power supplies and motor control.

The PIC16F170X/171X family features Core Independent Peripherals, such as the Configurable Logic Cell (CLC), Complementary Output Generator (COG) and Numerically Controlled Oscillator (NCO). These "self-sustaining" peripherals take 8bit PIC MCU performance to a new level, as they are designed to handle tasks with no code or supervision from the CPU to maintain operation. As a result, they simplify the implementation of complex control systems and give designers the flexibility to innovate.

The CLC peripheral allows designers to create custom logic and interconnections specific to their application, thereby reducing external components, saving code space and adding functionality. The COG peripheral is a powerful waveform generator that can generate complementary waveforms with fine control of key parameters, such as phase, dead-band, blanking, emergency shut-down states and error-recovery strategies. It provides a cost-effective solution, saving both board space and component cost when driving FETs in half- and full-bridge drivers for control and power-conversion applications, for example.

The NCO is a programmable precision linear frequency generator, ranging from <1Hz to 500kHz+. It offers a step up in performance, while simplifying designs requiring precise linear frequency control, such as lighting control, tone generators, radio-tuning circuitry and fluorescent ballasts.

The new MCUs feature up to 28KB of self-read/write Flash program memory, up to 2KB of RAM, a 10bit ADC, a 5bit/8bit DAC, Capture-Compare PWM modules, stand-alone 10bit PWM modules and high-speed comparators (60ns typical response), along with EUSART, I2C and SPI interface peripherals. They also feature XLP technology for typical active and sleep currents of just 35µA/MHz and 30nA, respectively, helping to extend battery life and reduce standby current consumption.





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