Microchip Technology Inc

PIC16F170X/171X Product Family

Flexible Intelligence with On-Board Analog

The PIC16F170X/171x MCU family combines the intelligence and flexibility of our cutting edge Core Independent Peripherals with the cost-effective integration of op amps, comparators, and other Intelligent Analog peripherals.

Core Independent Peripherals take 8-bit performance to a new level by performing system functions autonomously, with much lower latency and power consumption than interrupt-based task handling. Additionally, they simplify the implementation of complex control systems by allowing designers to isolate each system function for easy development and troubleshooting.

The family also offers a rich set of analog peripherals, including Dual Op Amps to drive analog control loops, amplify signals from sensors, and perform basic signal conditioning. Other on-chip Intelligent Analog features include internal High-Speed Comparators, 10-bit ADC and 8-bit DAC. These 14-, 20-, 28-, and 40-pin devices also feature Zero Cross Detect, which simplifies TRIAC control, synchronized switching control, and timing. Together, they enable designers to reduce system cost and board space while improving EMI/EMC performance.

Choose Your Path with Flexible Routing Features

PIC16F170x/171x MCUs offer Peripheral Pin Select (PPS), which gives system developers the ability to configure any digital peripheral to any I/O pin. This flexible pin mapping feature provides increased freedom and optimization of the MCU’s peripheral resources that designers use in their application. When combined with the Configurable Logic Cell for peripheral-to-peripheral connections, the PPS helps enable complex functions, simplifies legacy system migration and provides optimized PCB tracing for improved board space usage and highest signal integrity for designs that require it.

Key Attributes

  • 32 MHz Internal Oscillator
  • Up to 28 KB Self-Write Program Memory
  • to 2 KB RAM
  • Op Amps
  • Zero Cross Detect (ZCD)
  • Up to Two High-Speed Comparators
  • 10-bit ADC, up to 28 channels
  • 5-/8-bit DAC
  • Up to Four Configurable Logic Cells (CLC)
  • Complementary Output Generator (COG)
  • Numerically Controlled Oscillator (NCO)
  • Up to Two 10-bit PWM modules
  • EUSART, SPI, and I2C™
  • mTouch™ Capacitive Sensing
  • eXtreme Low Power (XLP) Technology
  • Available in 14, 20, 28 and 40/44 pins
Intelligent Analog

Intelligent Analog peripherals help significantly reduce BOM cost, PCB size, and system noise. On-chip op amps, high speed comparators, and robust ADC peripherals allow designers to significantly reduce the component count in their analog signal chain.

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Zero Cross Detect

The Zero Cross Detect module can monitor AC line voltage, and indicate zero crossing activity. This information is made directly available to on-board Waveform Generation peripherals for use in TRIAC control applications, greatly reducing both CPU demand and BOM cost.

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Peripheral Pin Select (PPS)

The Peripheral Pin Select (PPS) provides the ultimate in flexibility when routing digital signals to device pins. With the PPS, any digital peripheral can be connected to any I/O pin on-the-fly for a customized layout. This allows users to maintain layout compatibility with older PIC MCUs, even as new features are implemented.

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Configurable Logic Cell

The Configurable Logic Cell offers hardware-based combinational and sequential logic functions to simplify and accelerate many common tasks. The CLC can also be used as “glue” logic between peripherals, eliminating the need for CPU intervention during steady-state activity in complex control loops.

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Numerically Controlled Oscillator

The Numerically Controlled Oscillator (NCO) is a programmable precision linear frequency generator, ranging from <1Hz to 500KHz+. The NCO offers a step up in performance, and a simplification in design for applications requiring precise linear frequency control such as: Lighting Control, Tone Generators, Radio Tuning Circuitry, Fluorescent Ballast, and Class D Audio Amps.

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