PIC16LF1765-E/ML - 8-Bit 32MHz 14KB Flash MCU | Microchip
MPN: PIC16LF1765-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.5 | $2.50 |
| 10 | $2.25 | $22.50 |
| 100 | $2 | $200.00 |
| 500 | $1.75 | $875.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC16LF1765-E/ML Overview
A PIC microcontroller is a Harvard-architecture, RISC-based single-chip computer that integrates CPU, Flash program memory, RAM, EEPROM, and configurable peripherals into one IC. The PIC16 LF family specifically targets ultra-low-power applications, with XLP technology offering nanoWatt sleep currents. Microcontrollers belong to the broader hierarchy of microcomputer -> embedded controller -> integrated circuit, and sit alongside MCUs from competing families such as STM32, MSP430, and AVR as the principal building blocks of modern embedded designs.
Key features include 1KB RAM, 256 bytes of EEPROM, a 10-bit ADC, configurable op-amps, zero-cross detect, high-current I/O pins, multiple timers, PWM/CCP modules, and serial interfaces (I2C, SPI, UART/USART). The 32MHz internal oscillator eliminates the need for an external crystal in many designs, reducing BOM cost and PCB area. Core-independent peripherals let the MCU handle tasks in hardware without CPU intervention, lowering active-mode current.
Typical applications include LED lighting control, sensor conditioning, IoT edge nodes, capacitive-touch front panels, motor-control signal generation, battery chargers, and consumer appliances. The QFN-16 (4x4) package is well-suited to space-constrained surface-mount designs where both thermal performance and low profile matter. Designers should consider the LF voltage range (1.8V-3.6V) when selecting this part, and choose the PIC16F1765 (non-LF) variant only when a wider 2.3V-5.5V supply is required.
Key design considerations include reserving adequate PCB copper for the QFN thermal pad, ensuring decoupling capacitors are placed within 3mm of the VDD pins, and verifying that the chosen variant's voltage range matches the system supply. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16LF1765-E/ML — 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-E/ML (same form factor and footprint) — differing in Package, Program Memory (Flash), Core Architecture, ADC, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1765-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1764-E/ML
✅ Drop-In✓ In Stock
$1.24 / Unit
View Datasheet →PIC16LF1769-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1768-E/ML
✅ Drop-In✓ In Stock
$1.21 / Unit
View Datasheet →PIC16LF1709-I/ML
✅ Drop-In✓ In Stock
$1.21 / Unit
View Datasheet →PIC16LF1554-I/ML
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC16LF1765-E/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC |
| Product Family | PIC16 LF (XLP) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| EEPROM | 256 bytes |
| CPU Speed (Max) | 32 MHz |
| Operating Voltage | 1.8 V to 3.6 V |
| ADC | 10-bit |
| Package | QFN-16 (4x4 mm) |
| Mounting Type | Surface Mount |
| Pin Count | 16 |
| Operating Temperature | -40 C to +125 C |
| Communication Interfaces | I2C, SPI, UART/USART |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC16LF1765-E/ML Pin Configuration
| Pin 1 | RA5 — Bidirectional I/O pin; analog capable |
| Pin 2 | RA4 — Bidirectional I/O pin |
| Pin 3 | RA3 — Bidirectional I/O pin; MCLR alternate |
| Pin 4 | RC5 — Bidirectional I/O pin |
| Pin 5 | RC4 — Bidirectional I/O pin |
| Pin 6 | RC3 — Bidirectional I/O pin |
| Pin 7 | RC2 — Bidirectional I/O pin |
| Pin 8 | RC1 — Bidirectional I/O pin |
| Pin 9 | RC0 — Bidirectional I/O pin |
| Pin 10 | VSS — Ground reference |
| Pin 11 | RA2 — Bidirectional I/O pin; analog capable |
| Pin 12 | RA1 — Bidirectional I/O pin; analog capable |
| Pin 13 | RA0 — Bidirectional I/O pin; analog capable |
| Pin 14 | VDD — Positive supply (1.8V-3.6V) |
| Pin 15 | RA7 — Bidirectional I/O pin |
| Pin 16 | RA6 — Bidirectional I/O pin |
Typical Applications
PIC16LF1765-E/ML is suitable for 7 applications: Battery-Powered IoT Sensor Node, LED Lighting and Dimming Control, Capacitive Touch User Interface, Industrial Sensor Conditioning and 4-20mA Loop, Small Motor Control (Fan, Pump, Valve), Consumer Appliance Front Panels, Portable Medical and Wellness Devices.
Battery-Powered IoT Sensor Node
The PIC16LF1765-E/ML's XLP architecture and 1.8V-3.6V operating range make it a natural fit for coin-cell or two-AA-battery sensor endpoints that sleep most of the time. The 10-bit ADC plus integrated op-amps condition signals directly from thermistors, photodiodes, and gas sensors without external analog ICs, and the 32MHz core wakes fast enough to process a measurement and transmit via UART or SPI to a host radio. Estimated: at 32kHz sleep with periodic 1ms active bursts, average current can drop below 1uA, enabling multi-year coin-cell lifetimes. The 4x4mm QFN footprint fits in wearable, smart-lock, and remote-control designs where every millimetre counts. Distinguishing trade-off vs PIC24/STM32 alternatives: the PIC16LF1765 has less RAM (1KB) and no 32-bit math, so heavier DSP nodes should consider migrating to a Cortex-M0+ family.
Recommended
LED Lighting and Dimming Control
The PIC16LF1765-E/ML is well matched to dimmable LED drivers and architectural lighting controllers because the integrated zero-cross detect senses AC line crossings for TRIAC-compatible phase-cut dimming, while the on-chip op-amps and 10-bit ADC close the feedback loop on constant-current output. The 32MHz instruction cycle supports flicker-free PWM resolution above 100kHz, well above the visible flicker band. Estimated: at 8MHz PWM on a 16-bit duty cycle, dimming steps of 0.002% are achievable, which exceeds the human eye's perceptual limit. The 1.8V-3.6V range suits both 3.3V digital rails and 5V-tolerant interface via clamping resistors. The 16-pin QFN footprint allows the entire controller, dimming logic, and temperature foldback to fit in a lamp-base module behind the heat sink. Designers transitioning from discrete analog controllers gain digital trim, software-configurable curves, and the ability to field-upgrade dimming profiles via ICSP.
Recommended
Capacitive Touch User Interface
The PIC16LF1765-E/ML implements Microchip's mTouch capacitive-touch sensing through its on-chip comparators and the CVD (Capacitive Voltage Divider) peripheral, supporting up to 8 touch channels without external sensing ICs. The 32MHz core runs Microchip's touch library at sub-100us scan rates per channel, which keeps total current draw low while remaining responsive to finger presses through 3mm acrylic overlays. Estimated: scanning 8 channels every 10ms consumes about 200uA average at 3.3V - low enough for portable appliances. The 1.8V-3.6V LF range allows direct battery operation, while the QFN-16 (4x4) footprint supports slim-bezel industrial and appliance front panels. The op-amps on board can also drive LED-backlit icons and proximity sensing for wake-on-approach. Compared with dedicated touch ICs, the MCU-only approach reduces BOM by combining touch sensing, LED driving, and serial communication on a single chip.
Recommended
Industrial Sensor Conditioning and 4-20mA Loop
Industrial pressure, level, and flow transmitters benefit from the PIC16LF1765-E/ML's combination of op-amps for front-end signal conditioning, a 10-bit ADC for digitising the conditioned signal, and UART/SPI for digital output. The op-amps can be configured as instrumentation or active-filter stages, replacing two or three external amplifiers and saving BOM cost. The wide -40C to +125C operating temperature and 1.8V-3.6V supply allow 3.3V system rails directly without level shifters. Estimated: with op-amp gain of 10 and 10-bit ADC, the achievable resolution is about 5mV at the input - sufficient for most industrial transducer spans after factory calibration. The QFN-16 (4x4) footprint plus industrial temp grade makes it suitable for DIN-rail transmitter heads and remote I/O modules. Trade-off vs Cortex-M0: the PIC16LF1765 lacks hardware DSP, so applications requiring FFT on vibration data should consider a dsPIC33 or Cortex-M4.
Recommended
Small Motor Control (Fan, Pump, Valve)
Brushless DC fan pumps and small brushed motors can be controlled by the PIC16LF1765-E/ML using its PWM, complementary waveform generator, and configurable logic cell to handle back-EMF zero-cross detection and commutation timing in hardware, offloading the CPU. The 32MHz instruction rate supports 20kHz PWM frequencies with no jitter, which keeps switching losses low and acoustic noise minimal. Estimated: at 20kHz PWM with 10-bit duty resolution, RPM control resolution is about 1.5 RPM on a 1500-RPM fan - more than the human ear can perceive. The 1.8V-3.6V LF range suits USB-powered or 3.3V-rail applications such as PC fans, small pumps, and proportional valves. The 16-pin QFN footprint, plus the integrated op-amp for current sensing, lets a complete driver fit under 1cm^2 of PCB. Compared with dedicated motor-control ICs, the MCU-based approach provides field-upgradeable control algorithms and closed-loop PID tuning.
Recommended
Consumer Appliance Front Panels
The PIC16LF1765-E/ML suits white-goods front panels (washing machines, dishwashers, coffee machines) because it integrates capacitive-touch sensing, LED driving, and serial interface to a main appliance MCU on a single chip. The 10-bit ADC reads knob positions, water-level sensors, and temperature probes; the op-amps condition thermistor bridges without external analog ICs. The 1.8V-3.6V LF range simplifies power-tree design in 3.3V or two-AA battery-front-panel modules, and the -40C to +125C industrial temp range tolerates oven-door heat. Estimated: scanning 6 capacitive buttons plus 4 LEDs every 50ms draws less than 300uA average, leaving the rest of the panel idle. The QFN-16 (4x4) footprint fits behind a slim acrylic overlay with the exposed pad serving as thermal dissipation under high-LED-load conditions. Compared with discrete touch IC plus LED driver plus op-amp, the integrated MCU cuts BOM cost by 30-50% on typical panel designs.
Recommended
Portable Medical and Wellness Devices
The PIC16LF1765-E/ML's XLP nanoWatt sleep currents and integrated op-amps make it suitable for portable medical and wellness devices such as glucose meters, pulse oximeters, and infrared thermometers where battery life and small size are paramount. The op-amp drives the photodiode transimpedance stage in a pulse-ox finger probe, and the 10-bit ADC digitises the result for SpO2 calculation. The 1.8V-3.6V LF range allows direct operation from a single CR2032 coin cell with no boost converter, saving BOM cost. Estimated: at 1uA sleep with periodic 100ms active measurements, a CR2032 can sustain a pulse-oximeter for 6+ months of intermittent use. The QFN-16 (4x4mm) footprint fits inside a fingertip clip. Trade-off vs ARM Cortex-M0 designs: the PIC16 lacks DSP for complex signal processing, so this fits simpler wellness devices rather than FDA-grade medical instruments requiring extensive validation.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1765-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1765-E/ML | PIC16LF1764-E/ML | PIC16LF1769-E/ML | PIC16LF1768-E/ML | PIC16LF1709-I/ML | PIC16LF1554-I/ML |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-16 (4x4) | QFN-16 (4x4) - same | QFN-16 (4x4) - same | QFN-16 (4x4) - same | QFN-16 (4x4) - same | QFN-16 (4x4) - same | QFN-16 (4x4) - same |
| Operating Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Flash Memory | 14 KB | 14 KB | 7 KB | 14 KB | 7 KB | 14 KB | 14 KB |
| RAM | 1 KB | 1 KB | 512 B | 1 KB | 1 KB | 1 KB | 1 KB |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| On-chip Op-amps | Yes | Yes | Yes (fewer) | Yes (more) | Yes (more) | No | No |
Key Differentiators
- Integrated op-amps with intelligent analog peripherals (vs PIC16LF1709-I/ML)
- XLP-class 1.8V-3.6V operation with nanoWatt sleep (vs PIC16F1765-E/ML)
- Full 14KB Flash with hardware-touch capability (vs PIC16LF1764-E/ML)
Design Notes
Estimated: the QFN-16 (4x4) package has a thermal pad on the underside that must be soldered to a PCB copper pour of at least 1cm^2 for the rated -40C to +125C operation. Without the thermal pad soldered, junction temperature rises rapidly at moderate loads. Stencil-applied solder paste under the pad plus via-in-pad stitching (4-6 thermal vias, 0.3mm drill) is the standard approach.
Place the 100nF VDD decoupling capacitor within 3mm of the VDD pin (pin 14) and connect it directly to the ground pad via a short trace. Add a 10uF bulk capacitor near the ICSP programming header (RA0/RA1) to suppress programming-induced voltage drops. The ICSP pins (RA5/RA4) must not be loaded with more than 1kohm to ground or in-circuit programming may fail.
Do not select the LF variant for designs where VDD may rise above 3.6V (e.g., USB-powered designs using a 5V LDO with 3.3V output tolerance issues). Verify that the chosen package code /ML maps to QFN-16 (4x4) and not to a different package - the /ML suffix is specific to Microchip's package code table. When migrating to the PIC16F1765 (non-LF), check that the design's lowest supply stays above 2.3V during battery droop.
Route the analog-sensitive traces (sensor inputs to ADC channels) away from PWM switching traces and high-current I/O to avoid coupling noise. The on-chip op-amp inputs are high-impedance and benefit from guard rings tied to ground at the PCB layer transitions. For capacitive-touch sensing (mTouch/CVD), keep the touch traces short and symmetric, and add ground flood around them.
Compliance Information
RoHS compliant per Microchip product page; standard industrial grade (not AEC-Q100 qualified for automotive).
