PIC16LF1764-I/SL - 8-bit MCU, 7KB Flash, 32MHz, 14-SOIC | Microchip
MPN: PIC16LF1764-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.93 | $0.93 |
| 10 | $0.84 | $8.40 |
| 100 | $0.74 | $74.00 |
| 500 | $0.66 | $330.00 |
| 1,000 | $0.59 | $590.00 |
| 3,000 | $0.52 | $1,560.00 |
PIC16LF1764-I/SL Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, Flash program memory, SRAM, peripherals, and I/O on one die, executing instructions on 8-bit data words. PIC microcontrollers use a RISC-based Harvard architecture with separate program and data buses, enabling single-cycle instruction execution at 32 MHz (8 MHz instruction rate with the 4:1 clock divider). MCUs sit within the broader hierarchy of microprocessors, systems-on-chip, and digital ICs and are the building blocks of embedded control.
Key features include 10-bit ADC, 10-bit DAC, two operational amplifiers, zero-cross detect (ZCD), programmable ramp generator (PRG), three Configurable Logic Cells (CLC), 100 mA high-current I/O pins, peripheral pin select (PPS), and 10/16-bit PWMs. These intelligent-analog peripherals allow two independent closed-loop control channels on a single 14-pin device, dramatically reducing external analog circuitry in motor-control, lighting, and power conversion designs.
The architecture leverages nanoWatt XLP technology for sub-uA sleep currents, wide digital and analog integration, and PPS for flexible signal routing, eliminating the need for external muxing. With 32 MHz performance at 1.8V, code density per mW is exceptionally high compared to older 5V PIC16 families, allowing direct drop-in upgrades from legacy parts.
Typical applications include LED lighting drivers, BLDC/PMSM motor control subsystems, switch-mode power supply control, battery chargers, and industrial sensor conditioning. The combination of op amps, comparators, ZCD, and PRG in a small 14-SOIC package makes the PIC16LF1764 particularly attractive for cost-sensitive consumer products requiring analog control.
When designing with this device, plan for ICD debugging via the ICSP pins (PGEC/PGED) and reserve RA0/RA1 if in-circuit programming is required in production. The PPS remapping feature simplifies PCB layout, but pin function defaults at reset must still be checked to avoid unintended peripheral drive.
This page synthesizes distributor stock, drop-in 14-SOIC alternatives, and practical engineering design notes specific to the PIC16LF1764-I/SL that are not collected in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF1764-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 PIC16LF1764-I/SL (same form factor and footprint) — differing in Package, Program Memory (Flash), ADC, Core Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1765-I/SL
✅ Drop-In✓ In Stock
$0.96 / Unit
View Datasheet →PIC16F1764-I/SL
✅ Drop-In✓ In Stock
$1.28 / Unit
View Datasheet →PIC16LF1768-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1769-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1764-E/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1764-I/SL Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 RISC, 8-bit Harvard |
| Program Memory (Flash) | 7KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Max CPU Speed | 32 MHz (8 MHz instruction rate) |
| Operating Voltage | 1.8 V to 3.6 V (LF low-power family) |
| Operating Temperature | -40 C to +85 C (industrial grade) |
| ADC | 10-bit, multiple channels |
| DAC | 10-bit |
| Operational Amplifiers | 2 internal op amps |
| Zero-Cross Detect (ZCD) | 1 internal |
| Configurable Logic Cells (CLC) | 3 |
| PWM | 10/16-bit, multiple channels |
| High-Current I/O Drive | 100 mA capable pins |
| Peripheral Pin Select (PPS) | Yes |
| Package | 14-SOIC (narrow body, 3.9 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16LF1764-I/SL Pin Configuration
| Pin 1 | RA0/ICSPDAT — Bidirectional I/O / In-Circuit Serial Programming data |
| Pin 2 | RA1/PWM4 — Bidirectional I/O / PWM output |
| Pin 3 | RA2 — Bidirectional I/O / analog capable |
| Pin 4 | MCLR/RA3 — Master Clear (reset) input or I/O |
| Pin 5 | RA4 — Bidirectional I/O / analog input |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive supply (1.8V-3.6V) |
| Pin 8 | RB4 — High-current I/O (100 mA capable) |
| Pin 9 | RB5 — High-current I/O (100 mA capable) |
| Pin 10 | RB6/PGC — Bidirectional I/O / ICSP clock |
| Pin 11 | RB7/PGD — Bidirectional I/O / ICSP data |
| Pin 12 | RA5 — Bidirectional I/O / analog input |
| Pin 13 | RA6 — Bidirectional I/O / analog input |
| Pin 14 | RA7 — Bidirectional I/O / analog input |
Typical Applications
PIC16LF1764-I/SL is suitable for 6 applications: LED Lighting Drivers, BLDC/PMSM Motor Control Subsystems, Switch-Mode Power Supply (SMPS) Control, Battery Chargers (Li-ion / NiMH), Industrial Sensor Conditioning, Home Appliance Control (White Goods).
LED Lighting Drivers
The PIC16LF1764-I/SL's on-chip 100 mA high-current I/O drive and 10/16-bit PWMs make it ideal for direct LED driving without external MOSFETs in low-cost retrofit lamps. The 2 internal op amps support constant-current feedback loops by sensing shunt-resistor drop and modulating PWM duty cycle, while the zero-cross detect (ZCD) captures AC line crossing for TRIAC dimmer compatibility in line-powered luminaires. The PRG (programmable ramp generator) enables smooth fade-in/fade-out transitions without timer interrupts, keeping the firmware small and the BOM minimal at 14-SOIC footprint.
Recommended
BLDC/PMSM Motor Control Subsystems
The combination of two op amps, ZCD, 10-bit DAC, and 10-bit ADC in the PIC16LF1764-I/SL creates two independent feedback channels for sensorless BLDC commutation or PMSM field-oriented control in small motors. The CLC cells (3) can implement hardware state machines for commutation timing without CPU load, freeing the 32 MHz core for outer-loop control. The 100 mA I/O drive allows direct low-side MOSFET gate drive up to a few amps, eliminating predriver cost in consumer-grade fan or pump controllers below 20W.
Recommended
Switch-Mode Power Supply (SMPS) Control
The PIC16LF1764-I/SL integrates the analog control loop peripherals required for isolated and non-isolated SMPS designs: a 10-bit ADC samples output voltage, the op amp implements transconductance error amplification, and the 10/16-bit PWM generates the switching frequency up to several hundred kHz. The PRG can implement slope compensation for peak-current-mode control, while ZCD detects transformer demagnetization in flyback topologies. With 7KB Flash and the LF voltage range, the device runs directly off the auxiliary winding or battery without an extra regulator.
Recommended
Battery Chargers (Li-ion / NiMH)
Li-ion and NiMH chargers benefit from the PIC16LF1764-I/SL's nanoWatt XLP sleep current and 1.8V-3.6V native operation. One op amp monitors charge current via a sense resistor, the second op amp monitors battery voltage for CC/CV (constant-current, constant-voltage) transition logic, and the 10-bit DAC programs the reference for accurate termination. The 32 MHz speed handles USB-C PD negotiation or simple LED status indication. The same 14-SOIC footprint across the LF family allows a single PCB to ship in 5SKU variants.
Recommended
Industrial Sensor Conditioning
The PIC16LF1764-I/SL integrates the analog front end needed to read thermocouples, RTDs, and 4-20 mA current loops: 2 op amps buffer the sensor signal, the 10-bit ADC digitizes it, and the 10-bit DAC drives a 4-20 mA loop with calibration. CLC cells implement digital filtering and oversampling without CPU burden, while PPS routes the comparator-driven interrupts for low-latency response. Operating at 1.8V-3.6V from a 3.3V industrial rail, the MCU simplifies loop-powered and battery-backed sensor designs in factory automation.
Recommended
Home Appliance Control (White Goods)
White goods such as coffee machines, induction cooktops, and dishwasher controllers use the PIC16LF1764-I/SL for integrated analog and digital control in a single 14-SOIC package. The op amps process temperature and pressure sensor signals, the ZCD detects AC line zero crossings for TRIAC or relay synchronization, and the CLCs implement custom safety logic with deterministic response. The PRG generates ramp profiles for coffee pre-infusion or induction power-up. Industrial temperature grade (-40C to +85C) and RoHS compliance suit consumer appliance safety and environmental requirements.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1764-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1764-I/P | PIC16LF1765-I/SL | PIC16F1764-I/SL | PIC16LF1768-I/SL | PIC16LF1769-I/SL |
|---|---|---|---|---|---|---|
| Package | 14-SOIC (narrow body) | PDIP-14 - not drop-in (through-hole) | 14-SOIC (narrow body) | 14-SOIC (narrow body) | 14-SOIC (narrow body) | 14-SOIC (narrow body) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 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 | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Flash Program Memory | 7KB | 7KB | 14KB | 7KB | 28KB | 28KB |
| SRAM | 512 B | 512 B | 1KB | 512 B | 2KB | 2KB |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Key Differentiators
- Integrated intelligent analog peripherals in 14-SOIC (vs PIC16F1704-I/SL)
- Drop-in upgradability to 1765/1768/1769 in same package (vs PIC16LF1764-I/P (PDIP-14))
- 1.8V minimum VDD extends battery life (vs PIC16F1764-I/SL)
Design Notes
PIC16LF1764-I/SL is a 3.3V class MCU - applying 5V to VDD will damage the part. Use a regulator such as MCP1700 between USB (5V) or 24V industrial rails and the device. If 5V-tolerant operation is required, choose the PIC16F1764-I/SL instead. Note that the 'LF' 1.8V minimum excludes operation directly from a deeply discharged Li-ion cell without a boost circuit.
For ICSP (In-Circuit Serial Programming), expose the PGC and PGD pins (RB6/RB7) on the production board so devices can be programmed after reflow. The MCLR pin must have a 10 kohm pull-up to VDD and a capacitor to ground for proper reset. Avoid routing noisy switching signals (PWM outputs) near the ICSP pins or analog op-amp inputs on a 4-layer board stackup.
Estimated: at VDD=3.3V and 32 MHz active current draw is approximately 2-4 mA per the datasheet; sleep current can drop below 1 uA with nanoWatt XLP mode. For battery-powered designs, gate the MCU into sleep between sensor samples and use the op amp + ZCD as wake-up sources via interrupts. Decouple VDD with 100 nF ceramic + 10 uF bulk placed within 5 mm of the supply pin.
Compliance Information
Industrial temperature grade (-40C to +85C); RoHS and lead-free per Microchip product page. AEC-Q100 qualification is not available on this part - for automotive applications use AEC-Q100 qualified PIC16 variants in the same family.
