PIC16LF1764-I/P - 8-Bit 32MHz MCU, 7KB Flash | Microchip
MPN: PIC16LF1764-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.45 | $1.45 |
| 10 | $1.3 | $13.00 |
| 100 | $1.15 | $115.00 |
| 500 | $1.02 | $510.00 |
| 1,000 | $0.92 | $920.00 |
PIC16LF1764-I/P Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path and a Harvard architecture that separates program and data memory for deterministic instruction execution. PIC16 MCUs sit at the entry level of Microchip's PIC family hierarchy, offering low power consumption (the "LF" suffix denotes the eXtreme Low Power "XLP" line) and a small footprint ideal for battery-powered and space-constrained designs. They integrate peripherals such as ADC, comparators, PWM, and op-amps to replace discrete analog components.
Key features of the PIC16LF1764-I/P include 7KB Flash / 512B RAM / 128B EEPROM, 32MHz operation (8MHz internal oscillator with 4x PLL), 14 I/O pins with 25mA source/sink, two operational amplifiers, zero-cross detect, 10-bit ADC with computation (ADC2), 5-bit DAC, and Core Independent Peripherals (CIPs) such as CWG, NCO, and PWM. The "I" suffix indicates the industrial temperature range of -40C to +85C, and the "P" suffix denotes the 14-pin PDIP package.
Typical applications include LED lighting control, switched-mode power supplies (SMPS), battery chargers, sensor signal conditioning, motor control, and consumer white goods. The on-chip op-amps and zero-cross detect simplify closed-loop feedback design, while the high-current I/O pins can directly drive MOSFETs and LEDs without external drivers.
When designing with this MCU, ensure decoupling capacitors (100nF and 10uF) are placed close to VDD/VSS, and configure the unused I/O pins as outputs low to minimize power consumption. Program the device via In-Circuit Serial Programming (ICSP) using Microchip's MPLAB X IDE and PICkit programmer toolchain for fast firmware iteration.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16LF1764-I/P — 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/P (same form factor and footprint) — differing in ADC, Package, I/O Pins, Mounting Type, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1764-E/P
✅ Drop-In✓ In Stock
$1.1 / Unit
View Datasheet →PIC16F1764-I/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.82 / Unit
View Datasheet →PIC16LF1615-I/P
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF1559-I/P
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16LF1507-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1764-I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 (Harvard) |
| Program Memory | 7 KB (4K x 14) Flash |
| Data RAM | 512 bytes |
| EEPROM | 128 bytes |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 14 |
| ADC | 10-bit ADC with Computation (ADC2) |
| Op-Amps | 2 on-chip |
| DAC | 5-bit DAC |
| Zero-Cross Detect | Yes |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 14-pin PDIP (0.300 inch, 7.62 mm) |
| Mounting Type | Through-Hole |
| RoHS Status | Compliant |
PIC16LF1764-I/P Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Pin 2 | RA5 — Bidirectional I/O pin / ADC channel |
| Pin 3 | RA4 — Bidirectional I/O pin / ADC channel |
| Pin 4 | RA3/MCLR — Input pin / Master Clear reset (active low) |
| Pin 5 | RC5 — Bidirectional I/O pin / PWM output |
| Pin 6 | RC4 — Bidirectional I/O pin / PWM output |
| Pin 7 | RC3 — Bidirectional I/O pin / PWM output |
| Pin 8 | RC2 — Bidirectional I/O pin / PWM output |
| Pin 9 | RC1 — Bidirectional I/O pin / Op-Amp output |
| Pin 10 | RC0 — Bidirectional I/O pin / Op-Amp output |
| Pin 11 | RA2 — Bidirectional I/O pin / analog input |
| Pin 12 | RA1 — Bidirectional I/O pin / analog input |
| Pin 13 | RA0 — Bidirectional I/O pin / analog input |
| Pin 14 | VSS — Ground reference |
Typical Applications
PIC16LF1764-I/P is suitable for 6 applications: LED Lighting Control, Switched-Mode Power Supply (SMPS), Battery Charger Controller, Sensor Signal Conditioning, Motor Control (BLDC/PMSM), Consumer White Goods.
LED Lighting Control
The PIC16LF1764-I/P is well suited for dimmable LED driver controllers thanks to its two on-chip op-amps for current-sense amplification, the zero-cross detect block for TRIAC phase-cut dimming compatibility, and the 10-bit ADC with computation (ADC2) for closed-loop brightness regulation. The 32MHz CPU supports up to 32kHz PWM switching for flicker-free dimming down to 1% duty cycle. The 14 high-current I/O pins (25mA source/sink) directly drive low-side MOSFETs and high-side LED strings without external gate drivers. Operating from 1.8V to 3.6V, the LF variant is ideal for AC-DC LED bulbs fed from a small auxiliary supply. The PIC16LF1764 family integrates the CWG (Complementary Waveform Generator) and NCO (Numerically Controlled Oscillator) CIPs for advanced dimming profiles and power factor correction loops.
Recommended
Switched-Mode Power Supply (SMPS)
In non-isolated buck, boost, and flyback SMPS designs, the PIC16LF1764-I/P serves as the digital controller with analog housekeeping. The two on-chip op-amps implement the current-sense amplifier and the voltage-error amplifier, while the 10-bit ADC samples the regulated output and the SMPS control loop firmware adjusts PWM duty cycle. The CWG peripheral generates complementary PWM with programmable dead-time for synchronous rectifier drive. With 32MHz CPU clock the firmware can run control loops at 100kHz or higher, supporting converters up to 250W. The 1.8V-3.6V supply suits 3.3V-rail designs. The integrated zero-cross detect block is used in valley-switching controllers to improve light-load efficiency. Per the Microchip application note AN2159, the on-chip op-amps save one or two external TL082-class ICs.
Recommended
Battery Charger Controller
The PIC16LF1764-I/P supports single-cell Li-Ion, LiFePO4, and NiMH charger designs with its integrated 10-bit ADC for battery voltage and current monitoring, on-chip op-amps for current-sense conditioning, and 5-bit DAC for reference voltage. The XLP nanoWatt technology drops sleep current below 100nA, critical for shelf-life between charge cycles. The 7KB Flash accommodates state-of-charge (SOC) lookup tables and CC-CV charging profiles. Operating voltage of 1.8V-3.6V covers both 1S Li-Ion (4.2V max charge, regulated to 3.6V system rail) and direct battery-cell operation. The zero-cross detect and CWG peripherals implement synchronous buck topologies without external PWM ICs. Charging firmware can be updated via ICSP without disassembling the battery pack.
Recommended
Sensor Signal Conditioning
In sensor front-ends for thermocouples, RTDs, load cells, and strain gauges, the PIC16LF1764-I/P integrates two op-amps for instrumentation-grade signal amplification plus a 10-bit ADC with computation (ADC2) that performs oversampling, averaging, and threshold detection in hardware. The ADC2 CIP offloads the CPU, enabling the MCU to sleep between measurements for nanoWatt power budgets. The on-chip 5-bit DAC supplies a precision reference for ratiometric bridge sensors. With 512B RAM and 7KB Flash, calibration coefficients and linearization tables fit in firmware. Industrial -40C to +85C temperature range suits outdoor and factory-floor sensors. Compared to a discrete op-amp + ADC + MCU design, the integrated solution reduces BOM by 3-4 parts and PCB area by approximately 30%.
Recommended
Motor Control (BLDC/PMSM)
The PIC16LF1764-I/P controls small brushless DC (BLDC) and permanent-magnet synchronous motors (PMSM) in fans, pumps, and small appliances. The CWG and PWM peripherals generate 3-phase complementary drive signals with programmable dead-time, while the 10-bit ADC samples back-EMF for sensorless trapezoidal commutation. The zero-cross detect triggers commutation timing at zero back-EMF crossings, eliminating hall sensors in cost-sensitive applications. Operating from 1.8V to 3.6V, the LF variant suits low-voltage motor drives (up to 12V bus). At 32MHz, the firmware supports 6-step commutation up to 60,000 RPM and basic FOC routines for vibration-sensitive applications like fans. The high-current I/O pins (25mA) directly drive gate-driver inputs or small low-side FETs in sub-50W designs.
Recommended
Consumer White Goods
In coffee makers, rice cookers, washing machines, and air purifiers, the PIC16LF1764-I/P serves as the appliance controller with on-chip op-amps replacing external analog ICs. The 14-pin PDIP package supports through-hole PCB assembly typical in consumer white goods, reducing manufacturing cost relative to SMT. Industrial temperature grade (-40C to +85C) covers kitchen and laundry environments. The 7KB Flash is sufficient for menu state machines, timer logic, and sensor-fusion routines. Zero-cross detect enables AC line synchronization for TRIAC-driven heater control, while the CWG peripheral drives IGBTs in inverter compressors. The XLP low-power modes allow battery-backed RTC functions. Cost-optimized BOM combined with integrated peripherals makes this MCU a strong fit for sub-$50 consumer appliances where every external IC matters.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1764-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1764-E/P | PIC16F1764-I/P | PIC16LF1615-I/P | PIC16LF1559-I/P | PIC16LF1507-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-pin PDIP | 14-pin PDIP - same | 14-pin PDIP - same | 14-pin PDIP - same | 14-pin PDIP - same | 14-pin PDIP - same |
| Program Memory | 7 KB Flash | 7 KB Flash | 7 KB Flash | 7 KB Flash | 7 KB Flash | 1.75 KB Flash |
| Data RAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 256 bytes | 128 bytes |
| Supply Voltage Range | 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 | 1.8 V to 3.6 V |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 20 MHz |
| On-Chip Op-Amps | 2 | 2 | 2 | 0 | 0 | 0 |
| Zero-Cross Detect | Yes | Yes | Yes | No | No | No |
| Operating Temperature | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- Two integrated op-amps eliminating external analog ICs (vs PIC16LF1615-I/P)
- Industrial temperature range vs extended temperature (vs PIC16LF1764-E/P)
- Highest RAM in the 14-pin PDIP PIC16LF family (vs PIC16LF1559-I/P)
- Lower supply voltage ceiling suits battery-powered designs (vs PIC16F1764-I/P)
Design Notes
Place a 100nF decoupling capacitor as close as possible to the VDD pin (pin 1), with a parallel 10uF bulk capacitor at the supply origin. According to the Microchip datasheet, inadequate decoupling causes erratic ADC readings and high EMI. For battery-powered designs using the XLP sleep modes, the bulk capacitor holds the rail during wake-up transients; a value of at least 10uF is recommended. Estimated: the MCU draws approximately 6 mA active at 32 MHz with all peripherals on, so the regulator must source at least 10 mA peak.
Pin 4 (RA3/MCLR) is shared between general-purpose I/O and the reset input. Per the Microchip datasheet, when used as MCLR it requires an external pull-up resistor (typically 10 kOhm) to VDD; omitting the pull-up results in the MCU randomly entering reset. If MCLR is not required, the CONFIG3 MCLRE bit can disable the function and free pin 4 for general I/O. The RA3 input-only nature also means it cannot drive outputs. Always verify configuration bits in MPLAB X before programming.
For the 14-pin PDIP package, route analog signals (ADC inputs, op-amp pins) away from digital switching traces. Use a ground pour on the bottom layer beneath the MCU to provide a low-impedance return path. Per Microchip's AN2303, the analog reference (VDD/VSS) should be isolated from noisy digital rails with a ferrite bead or filter capacitor to maximize ADC accuracy. Keep the ICSP programming pins (PGD/PGC, mapped to RC7/RC6 on 20-pin variants but RB7/RB6 on the 20-pin package) accessible for in-circuit programming.
Compliance Information
RoHS and lead-free compliant per Microchip product page. Not AEC-Q100 qualified; for automotive applications choose PIC16LF1764-E/P with extended temperature grade.
