PIC16LF1765-I/SL - 8-bit XLP MCU, 14KB Flash, 32MHz | Microchip
MPN: PIC16LF1765-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.46 | $14.60 |
| 100 | $1.29 | $129.00 |
| 500 | $1.1 | $550.00 |
| 1,000 | $0.96 | $960.00 |
PIC16LF1765-I/SL Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O. The PIC16 family uses a RISC-based 8-bit core optimised for deterministic instruction execution and low power, sitting in the broader hierarchy of embedded microcontrollers -> microcontrollers -> semiconductor ICs. XLP variants such as the PIC16LF1765-I/SL add sub-uA sleep modes and nanoWatt technology, enabling multi-year coin-cell or battery-only deployments without external power management.
Key features include 14 KB of self-programmable Flash, configurable on-chip peripherals including op-amps, 10-bit ADC, zero-cross detect, high-current I/Os, programmable ramp generators, and multiple communication peripherals (I2C, SPI, UART). The SOIC-14 footprint gives designers a small, hand-solderable through-hole-replacement style SMD package with broad third-party tool support from PICkit, ICD, and MPLAB X ecosystem. 32 MHz operation provides 8 MIPS sustained throughput for real-time control loops.
Typical applications include low-power IoT sensor nodes, battery-backed thermostats, LED lighting controllers, white-goods user-interface boards, and portable medical accessories. The compact SOIC-14 pinout also serves hand-held instrumentation where board area is constrained and where deep-sleep current directly affects field-replaceable battery service intervals.
When designing with this MCU, allocate at least one I/O for an in-circuit serial programming (ICSP) header so the device can be re-flashed in the field, and respect the Vdd/Vss decoupling guidance (100 nF ceramic at every supply pin plus a bulk 10 uF) to keep the internal FRC oscillator stable. This page synthesizes distributor pricing, drop-in PIC16F1765 and PIC16LF176x family alternatives, and practical design notes that go beyond what is in the bare manufacturer datasheet.
Drop-in alternatives for PIC16LF1765-I/SL — 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 PIC16LF1765-I/SL (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Program Memory (Flash), Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1765T-I/SL
✅ Drop-In✓ In Stock
$1.2 / Unit
View Datasheet →PIC16F1765-I/SL
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16LF1825-I/SL
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16LF1765-I/SL Maximum Ratings & Electrical Characteristics
| Architecture | 8-bit PIC® XLP™ RISC |
| Family | PIC16F176x / PIC16LF176x |
| Program Memory (Flash) | 14 KB (8K x 14) |
| RAM | 1 KB |
| Maximum CPU Frequency | 32 MHz |
| Operating Temperature | -40 °C to +85 °C (industrial, suffix "I") |
| ADC | 10-bit (per datasheet family) |
| Op-amps / Comparators | On-chip (per PIC16LF176x family features) |
| Zero-Cross Detect | Yes (per PIC16LF176x family features) |
| High-Current I/O | Yes (per PIC16LF176x family features) |
| Package | 14-pin SOIC (SL) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16LF1765-I/SL Pin Configuration
| Pin 1 | RA5 — Digital I/O / analog input |
| Pin 2 | RA4 — Digital I/O / analog input |
| Pin 3 | RA3 — Digital I/O / analog input / MCLR (per device configuration) |
| Pin 4 | RA2 — Digital I/O / analog input |
| Pin 5 | RA1 — Digital I/O / analog input |
| Pin 6 | RA0 — Digital I/O / analog input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RB7 — Digital I/O / ICSPDAT |
| Pin 9 | RB6 — Digital I/O / ICSPCLK |
| Pin 10 | RB5 — Digital I/O |
| Pin 11 | RB4 — Digital I/O |
| Pin 12 | RB3 — Digital I/O |
| Pin 13 | RB2 — Digital I/O |
| Pin 14 | VDD — Positive supply |
Typical Applications
PIC16LF1765-I/SL is suitable for 6 applications: Battery-Powered IoT Sensor Node, LED Lighting Controller / Driver, White-Goods User Interface Board, Portable Medical Accessory, Smart Thermostat / HVAC Controller, Hand-Held Test Instrument / Remote Control.
Battery-Powered IoT Sensor Node
The PIC16LF1765-I/SL is an ideal core for IoT sensor nodes running on coin-cell or 2xAA batteries. Its XLP (nanoWatt) sleep current is sub-microampere, while 14 KB of Flash is enough for sensor-conditioning firmware plus a small communication stack. The on-chip 10-bit ADC handles most analogue sensors, and the integrated op-amps let the board eliminate external signal-conditioning parts. Place the MCU between the battery and a low-power RF or LoRa sub-GHz module, wake on interrupt, sample, transmit, and return to deep sleep. With typical duty cycles of 0.1%, the PIC16LF1765-I/SL extends battery life into multi-year territory.
Recommended
LED Lighting Controller / Driver
The PIC16LF1765-I/SL is well matched to dimmable LED lighting controllers thanks to its high-current I/O (sinking tens of milliamps per pin) and integrated zero-cross detect for TRIAC phase-cut dimming. The on-chip op-amps can perform closed-loop current sensing without external active parts, reducing BOM cost. The 14 KB Flash fits firmware for flicker-free dimming curves, DMX or 0-10 V interface handling, and in-field OTA-style calibration via ICSP. The 14-pin SOIC is small enough for retrofit lamp PCBs, and the XLP sleep current is irrelevant when mains-powered but useful for emergency-pack backup.
Recommended
White-Goods User Interface Board
For washing machines, dishwashers, ovens, and refrigerators the PIC16LF1765-I/SL offers 32 MHz of deterministic throughput for user-interface boards: rotary encoders, capacitive or mechanical key matrices, segment LCD or LED indicators, and buzzer control. Its 14 KB Flash holds state-machine firmware with multiple wash/dry programs, while 1 KB of RAM is sufficient for display refresh buffers. The industrial -40 °C to +85 °C temperature grade handles the thermal environment of an appliance control compartment. SOIC-14 is compatible with wave-solder reflow profiles used in white-goods manufacturing lines.
Recommended
Portable Medical Accessory
Portable medical accessories such as peak-flow meters, glucose-monitor accessories, and pulse-oximeter reference boards benefit from the PIC16LF1765-I/SL's XLP core. The op-amps condition front-end bio-sensor signals (photodiode, thermistor) without external active components, while the 10-bit ADC quantises them with adequate resolution for diagnostic indicators. The industrial temperature range accommodates clinical and home-use environments. Battery life is extended by the nanoWatt sleep, and the SOIC-14 footprint keeps the PCB small enough for hand-held enclosures.
Recommended
Smart Thermostat / HVAC Controller
The PIC16LF1765-I/SL drives residential and light-commercial smart thermostats. Its zero-cross detect simplifies mains-frequency synchronisation for TRIAC-controlled fan or compressor switching, and its op-amps handle thermistor-bridge temperature sensing directly. The 14 KB Flash stores scheduling firmware plus a small UI library, while the XLP sleep mode keeps the standby current negligible on battery-backed thermostats that retain clock during power loss. The SOIC-14 pinout is well within the package budget of wall-mounted thermostats.
Recommended
Hand-Held Test Instrument / Remote Control
The PIC16LF1765-I/SL is a good fit for compact hand-held test instruments and infrared/RF remote controls. The on-chip op-amps drive the front-end signal chain, the high-current I/O can directly drive an IR LED without a transistor, and the XLP sleep current keeps the standby drain low. The 14-pin SOIC is hand-solderable for prototype builds and is accepted by most contract manufacturers. With the MPLAB X and PICkit toolchain, designers can iterate quickly and re-flash units in the field via ICSP.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1765-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1765T-I/SL | PIC16F1765-I/SL | PIC16LF1825-I/SL |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-14 (SL) | SOIC-14 (SL) - same | SOIC-14 (SL) - same | SOIC-14 (SL) - same |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB |
| Maximum Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| XLP / Low-Power | Yes (LF / nanoWatt) | Yes (LF / nanoWatt) | No (F standard voltage) | Yes (LF / nanoWatt) |
| Op-Amps / Zero-Cross Detect | Yes | Yes | Yes | No (mTouch instead) |
| Temperature Grade | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
Key Differentiators
- On-chip op-amps and zero-cross detect integrated with XLP core (vs PIC16LF1825-I/SL)
- Tape-and-reel SL variant offers identical die on the same SOIC-14 footprint (vs PIC16LF1765T-I/SL)
- Same XLP core with extended low-voltage Vdd support versus standard F variant (vs PIC16F1765-I/SL)
Design Notes
Estimated: with a 3.0 V supply and the PIC16LF1765-I/SL running at 32 MHz, the active current is roughly 5-7 mA depending on which peripherals are clocked. Drop to 32 kHz internal LFINTOSC for sleep polling, which yields single-digit microampere active currents and sub-uA deep-sleep currents. Decoupling: 100 nF ceramic directly at Vdd and another at Vss, plus a 10 uF bulk capacitor within 1 cm of the pins to stabilise the FRC oscillator.
Keep the ICSP header (ICSPCLK, ICSPDAT, MCLR, Vdd, Vss) on a 5-pin 0.1" header or pogo-pad footprint so the unit can be re-flashed in production or in the field with a PICkit 4 or ICD 4. Place the ICSP header at the board edge or under a service-cover flap; do not bury it under RF shielding or other components. A 4k7 pull-up on MCLR is required unless the internal weak pull-up is enabled in configuration bits.
Do not assume that the PIC16LF1765-I/SL has the same Vdd range as the PIC16F1765. The LF variant is the low-voltage XLP part and may not operate correctly above its specified Vdd maximum - confirm the Vdd upper limit in the datasheet electrical characteristics table before substituting. Also remember that configuration bits lock the oscillator mode and pin functions; setting them incorrectly can leave the device un-flashable without a high-voltage programmer.
Place the device away from high-current switching traces and high-dV/dt nodes. The op-amps inside the PIC16LF1765-I/SL are sensitive to supply noise; a star-ground topology with the MCU ground pin connected close to a low-impedance ground pour keeps analog performance stable. If a switching regulator is on the same board, route the analog ground separately back to a common star point at the bulk capacitor negative terminal.
Compliance Information
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified - choose a PIC16F1765 or PIC16LF1765 extended-temperature variant for automotive or other harsh-environment qualification.
