8-bit PICs gain integrated peripherals for reduced system cost
Available in 14-, 20-, 28-, and 40/44-pin packages, the 11-member PIC16F170X/171X family of MCUs integrates 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. These are the first PIC16 MCUs with Peripheral Pin Select, a pin-mapping feature that gives you 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 shavers), portable medical (blood-pressure meters, blood-glucose meters, pedometers), LED lighting, battery charging, power supplies and motor control.
next; autonomous peripherals
The 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 8-bit 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 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 <1 Hz to 500 kHz+. 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 28 kB of self-read/write Flash program memory, up to 2 kB of RAM, a 10-bit ADC, a 5-/8-bit DAC, Capture-Compare PWM modules, stand-alone 10-bit PWM modules and high-speed comparators (60 nsec typical response), along with EUSART, I2C and SPI interface peripherals. They also feature XLP technology for typical active and sleep currents of 35 µA/MHz and 30 nA, respectively, helping to extend battery life and reduce standby current consumption.
The PIC16F170X/171X family is supported by Microchip’s standard suite of development tools. The MPLAB Code Configurator is a free tool that generates seamless, easy-to-understand C code that is inserted into your project. It currently supports the PIC16F1704/08, and is expected to support the PIC16F1713/16 in April, along with all remaining MCUs in this family soon thereafter.
Microchip also has several online design centres that provide resources for working with the Core Independent Peripherals and Intelligent Analog integrated on these 8-bit Microcontrollers. Microchip also offers online design centers to assist in the creation of Intelligent Lighting and Home Appliance applications.
There is a video at; www.microchip.com/get/6DM3 and a presentation at; www.microchip.com/get/7TNV
In a variety of package options, pricing starts at $0.59 (10,000).
Microchip; www.microchip.com/get/H4FJ / www.microchip.com/get/4FJP
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