PIC16LF1517-I/PT - 8-Bit 20MHz MCU 14KB Flash 44-TQFP | Microchip
MPN: PIC16LF1517-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.92 | $192.00 |
| 500 | $1.71 | $855.00 |
| 1,000 | $1.53 | $1,530.00 |
PIC16LF1517-I/PT Overview
What is a PIC microcontroller? A PIC (Peripheral Interface Controller) is a family of 8-bit, 16-bit, and 32-bit microcontrollers from Microchip built on a Harvard RISC architecture. Within the broader taxonomy, PIC MCUs sit under microcontroller -> embedded controller -> semiconductor device. The PIC16F sub-family is the workhorse 8-bit line, and the 'LF' variant specifically targets ultra-low-power applications. The 'XLP' designation is Microchip's branded low-power technology, providing nanoWatt sleep currents that compete directly with MSP430-class devices in battery-life-sensitive products.
Key differentiating features of the PIC16LF1517-I/PT include its 14 KB Flash program memory, four 8-bit timers plus a 16-bit timer, two Capture/Compare/PWM (CCP) modules, one Enhanced CCP (ECCP), and Master I2C, SPI, and EUSART (enhanced USART with auto-baud) peripherals. The integrated 10-bit ADC supports up to 17 analog input channels, and the device provides up to 36 digital I/O pins on the 44-pin package variant. It also includes programmable weak pull-ups, power-on reset, brown-out reset (BOR), and a wide operating temperature range of -40 C to +85 C for the industrial 'I' grade.
Typical applications include battery-powered sensor nodes, portable consumer electronics, low-power IoT edge devices, smoke and CO detectors, remote controls, and wearable health monitors. The nanoWatt XLP technology enables multi-year coin-cell operation in duty-cycled sensing applications. The integrated 10-bit ADC handles direct sensor conditioning for thermistors, photodiodes, and battery-voltage monitoring without external ADC hardware.
When designing with the PIC16LF1517-I/PT, select the 44-pin TQFP for maximum I/O count, and pair with MPLAB X IDE and the XC8 compiler for firmware development. The PICkit or Snap programmer/debugger is recommended for in-circuit debug. Decoupling: place 100 nF and 10 uF ceramic capacitors within 5 mm of the VDD/AVDD pins to maintain ADC accuracy.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone - including thermal and PCB-layout guidance drawn from typical industrial designs using the PIC16LF15xx family.
Drop-in alternatives for PIC16LF1517-I/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LF1517-I/PT (same form factor and footprint) — differing in ADC, I/O Pins, Package, Operating Temperature, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1516-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1518-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1517-I/PT
✅ Drop-In✓ In Stock
$1.59 / Unit
View Datasheet →PIC16LF1519-I/PT
✅ Drop-In✓ In Stock
$1.42 / Unit
View Datasheet →PIC16LF1517-I/PT Maximum Ratings & Electrical Characteristics
| Family | PIC16F (PIC16LF151x series) |
| Core Architecture | 8-bit Harvard RISC |
| CPU Speed | 20 MHz (20 MIPS) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 512 bytes |
| ADC | 10-bit, up to 17 channels |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial 'I' grade) |
| I/O Pins | Up to 36 (44-pin TQFP variant) |
| Timers | 4 x 8-bit + 1 x 16-bit |
| CCP/Enhanced CCP | 2 x CCP, 1 x ECCP |
| Serial Peripherals | 1 x SPI, 1 x I2C (Master), 1 x EUSART |
| Low-Power Technology | XLP (nanoWatt) |
| Package | 44-pin TQFP (PT) 10x10 mm |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
PIC16LF1517-I/PT Pin Configuration
| Pin 1 | RA0/AN0/ULPWU — Port A bit 0 / Analog channel 0 / Ultra-Low-Power Wake-up |
| Pin 2 | RA1/AN1 — Port A bit 1 / Analog channel 1 |
| Pin 3 | RA2/AN2 — Port A bit 2 / Analog channel 2 |
| Pin 4 | RA3/AN3/VREF+ — Port A bit 3 / Analog channel 3 / ADC VREF+ |
| Pin 5 | RA4/AN4 — Port A bit 4 / Analog channel 4 |
| Pin 6 | RA5/AN5/SS — Port A bit 5 / Analog channel 5 / SPI Slave Select |
| Pin 7 | RA6/OSC2/CLKOUT — Port A bit 6 / Oscillator output / Clock output |
| Pin 8 | RA7/OSC1/CLKIN — Port A bit 7 / Oscillator input / Clock input |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply voltage (1.8-3.6 V) |
| Pin 11 | RB0/AN12/INT — Port B bit 0 / Analog channel 12 / External interrupt |
| Pin 12 | RB1/AN10 — Port B bit 1 / Analog channel 10 |
| Pin 13 | RB2/AN8 — Port B bit 2 / Analog channel 8 |
| Pin 14 | RB3/AN9 — Port B bit 3 / Analog channel 9 |
| Pin 15 | RB4/AN11 — Port B bit 4 / Analog channel 11 |
| Pin 16 | RB5/AN13 — Port B bit 5 / Analog channel 13 |
| Pin 17 | RB6/ICSPCLK — Port B bit 6 / In-Circuit Serial Programming clock |
| Pin 18 | RB7/ICSPDAT — Port B bit 7 / In-Circuit Serial Programming data |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (1.8-3.6 V) |
| Pin 21 | RC0 — Port C bit 0 |
| Pin 22 | RC1 — Port C bit 1 |
| Pin 23 | RC2 — Port C bit 2 |
| Pin 24 | RC3/SCL — Port C bit 3 / I2C clock |
| Pin 25 | RC4/SDA — Port C bit 4 / I2C data |
| Pin 26 | RC5 — Port C bit 5 |
| Pin 27 | RC6/TX/CK — Port C bit 6 / EUSART TX / I2C clock (clock mode) |
| Pin 28 | RC7/RX/DT — Port C bit 7 / EUSART RX / I2C data (data mode) |
| Pin 29 | RE3/MCLR/VPP — Port E bit 3 / Master Clear (Reset) / Programming voltage |
| Pin 30 | RD0 — Port D bit 0 |
| Pin 31 | RD1 — Port D bit 1 |
| Pin 32 | RD2 — Port D bit 2 |
| Pin 33 | RD3 — Port D bit 3 |
| Pin 34 | RD4 — Port D bit 4 |
| Pin 35 | RD5 — Port D bit 5 |
| Pin 36 | RD6 — Port D bit 6 |
| Pin 37 | RD7 — Port D bit 7 |
| Pin 38 | VSS — Ground reference |
| Pin 39 | VDD — Positive supply voltage (1.8-3.6 V) |
| Pin 40 | RE0 — Port E bit 0 |
| Pin 41 | RE1 — Port E bit 1 |
| Pin 42 | RE2 — Port E bit 2 |
| Pin 43 | AVSS — Analog ground reference |
| Pin 44 | AVDD — Analog positive supply voltage (1.8-3.6 V) |
Typical Applications
PIC16LF1517-I/PT is suitable for 6 applications: Battery-Powered IoT Sensor Node, Smoke and CO Detector Controller, Industrial Remote Control Transmitter, Wearable Health Monitor, Smart Home Sensor Hub, Portable Consumer Thermometer.
Battery-Powered IoT Sensor Node
The PIC16LF1517-I/PT fits battery-powered IoT sensor nodes thanks to its nanoWatt XLP sleep current and 1.8 V minimum VDD. Typical sensor-node firmware (sensor read, threshold check, BLE-packet format) fits comfortably within the 14 KB Flash, and the 10-bit ADC reads thermistor or photodiode signals directly. The wide 1.8-3.6 V supply accepts 2x AA alkaline (3.0 V nominal) or CR2032 coin cells without boost converters. Designers place 100 nF + 10 uF decoupling within 5 mm of VDD/AVDD pins. For a typical 0.1% duty cycle (1 sample per second, radio on for 10 ms), the average current stays below 30 uA, yielding multi-year battery life on a single CR2032.
Recommended
Smoke and CO Detector Controller
The PIC16LF1517-I/PT serves as the main controller in residential smoke and CO detectors, combining low power with sufficient peripherals. Its 10-bit ADC reads the ionization-chamber voltage and the electrochemical CO sensor output directly. The integrated CCP modules drive the piezo-buzzer alarm, while the EUSART reports to a wireless interconnect module. The XLP nanoWatt sleep mode keeps quiescent current below 5 uA so a 9 V battery lasts the full 10-year detector service life. Industrial -40 C to +85 C temperature grade supports garage and attic installations. The 14 KB Flash accommodates regulatory-specific firmware variants across regions (UL 217, EN 14604).
Recommended
Industrial Remote Control Transmitter
The PIC16LF1517-I/PT is well-suited for industrial remote-control transmitters used in crane control, machinery panel switching, and garage-door openers. The 20 MIPS CPU handles encryption rolling-code algorithms (KeeLoq or AES) and debouncing of the keypad matrix through 36 available I/O pins. The wide 1.8-3.6 V operating range supports 2x AA or 2x AAA cells directly, while the EUSART drives an external 433/868 MHz SAW-resonator-based transmitter. Designers use the ECCP module to drive an IR LED for line-of-sight control. The 44-pin TQFP package supports reflow-over-wave assembly common in high-volume consumer-electronics manufacturing.
Recommended
Wearable Health Monitor
Wearables like fitness bands, pulse oximeters, and continuous glucose monitors benefit from the PIC16LF1517-I/PT's nanoWatt sleep current and small TQFP footprint. The 10-bit ADC reads PPG (photoplethysmography) sensor signals, while the integrated SPI master talks to a dedicated BLE SoC for wireless transmission. Battery life extends from days to weeks when the MCU spends most of its time in the 50 nA sleep mode and wakes only for sensor sampling at 1 Hz. The 1.8 V VDD minimum allows direct operation from a Li-ion cell at end-of-life (3.0 V nominal) without a boost converter, reducing both BOM cost and PCB area.
Recommended
Smart Home Sensor Hub
The PIC16LF1517-I/PT is ideal for wall-mounted smart-home sensors (motion, temperature, humidity, air-quality) that require both low standby current and wireless connectivity. The 10-bit ADC reads environmental sensors via a multiplexer, and the EUSART/SPI drives an external LoRa or sub-GHz transceiver for long-range mesh networking. The XLP feature set yields battery life measured in years on two AA cells. The -40 C to +85 C industrial temperature grade handles unheated indoor spaces, garages, and outdoor enclosures. The 44-pin TQFP package provides enough GPIO to support RGB status LEDs and a local pushbutton override.
Recommended
Portable Consumer Thermometer
Battery-powered digital thermometers - forehead, ear, or food-grade probe types - match well with the PIC16LF1517-I/PT's low-power profile. The 10-bit ADC with on-chip voltage reference reads a thermistor or silicon sensor within +/- 0.5 C after calibration. The 14 KB Flash holds lookup tables, linearization routines, and audible fever-alert logic. With sleep currents below 50 nA, a pair of AAA cells lasts well beyond a year in typical household use. The 20 MIPS CPU handles fast ADC scans to settle within 2 seconds for a forehead reading. The industrial temperature range allows refrigerated or freezer-side food-thermometer applications.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1517-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1516-I/PT | PIC16LF1518-I/PT | PIC16F1517-I/PT | PIC16LF1519-I/PT | PIC16LF1517-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm | 40-PDIP (P) - through-hole |
| Flash Program Memory | 14 KB | 8 KB (-43%) | 28 KB (+100%) | 14 KB | 28 KB (+100%) | 14 KB |
| Data RAM | 512 bytes | 512 bytes | 1024 bytes (+100%) | 512 bytes | 1024 bytes (+100%) | 512 bytes |
| Operating Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V (wider, not LF) | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| CPU Speed | 20 MHz (20 MIPS) | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| ADC | 10-bit, 17 channels | 10-bit, 17 channels | 10-bit, 17 channels | 10-bit, 17 channels | 10-bit, 17 channels | 10-bit, 13 channels (40-pin) |
| Low-Power Technology | XLP (nanoWatt) | XLP (nanoWatt) | XLP (nanoWatt) | nanoWatt (non-XLP) | XLP (nanoWatt) | XLP (nanoWatt) |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- Higher Flash density at the same price tier (vs PIC16LF1516-I/PT)
- Lowest VDD operation in the family (vs PIC16F1517-I/PT)
- Surface-mount 44-pin TQFP for compact designs (vs PIC16LF1517-I/P)
- Single-cycle 8-bit RISC performance (vs PIC16LF1509-I/SS)
Design Notes
Estimated: the PIC16LF1517-I/PT draws approximately 110 uA/MHz active at 3.3 V VDD and falls to ~50 nA in sleep mode per the datasheet. At a typical 0.1% duty cycle for a sensor-read every 10 s with 10 ms active, average current is dominated by sleep and stays below 1 uA. For battery-life calculation, account for the BOD and WDT consumption explicitly - leaving both enabled can add 10-20 uA continuous. Use the FVR (Fixed Voltage Reference) only when needed and turn it off between conversions to minimize quiescent draw.
Place 100 nF decoupling capacitors within 3 mm of every VDD/AVDD pin and a single 10 uF bulk capacitor on the supply rail. Connect all VSS pins to a single uninterrupted ground plane; do not route digital return currents between VSS pins. For the ADC to achieve 10-bit accuracy on the 44-pin TQFP, keep analog traces short, route AVDD/AVSS separately from VDD/VSS, and place a ferrite bead between digital and analog supplies if the design shares a single battery source.
The 44-pin TQFP exposes 36 user I/O pins across ports A through E. Reserve RB6/RB7 for ICSP (In-Circuit Serial Programming) so the firmware can be updated on the assembled board without removing the MCU. Place a 4.7 kohm pull-up on MCLR (RE3) for proper reset behaviour, and avoid using RE3 as a digital I/O unless absolutely necessary. For low-EMI designs, place a series resistor (10-33 ohm) on the ICSPDAT and ICSPCLK lines to slow the programming edges.
Do not exceed 3.6 V on VDD or 5.5 V on any digital input pin - the LF variant is not 5 V tolerant and a 5 V signal on a digital pin will damage the device over time. Brown-Out Reset (BOR) must be configured to a threshold at or below 1.8 V to enable proper startup from deeply discharged batteries; the default 2.5 V BOR may prevent cold-boot at low battery voltages. The ADC's 10-bit resolution requires adequate acquisition time - for 10 kohm source impedance, allow at least 16 us acquisition to settle within 1 LSB.
Compliance Information
Industrial-grade -40 C to +85 C operating range. RoHS/REACH compliant per Microchip product page. Not AEC-Q100 qualified (automotive parts require PIC16F1517T-I/MV or higher-grade designation). Conflict-minerals compliant per Microchip supplier declarations.