PIC16LF18313-I/RF - 8-Bit 32MHz MCU, 3.5KB Flash | Microchip
MPN: PIC16LF18313-I/RF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.18 | $1.18 |
| 10 | $1.05 | $10.50 |
| 100 | $0.92 | $92.00 |
| 500 | $0.79 | $395.00 |
| 1,000 | $0.66 | $660.00 |
PIC16LF18313-I/RF Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a rich set of peripherals such as ADC, timers, communication ports, and PWM channels. The 8-bit PIC family is positioned in the broader taxonomy as microcontroller -> embedded controller -> semiconductor IC, serving as the central processor in countless battery-powered and cost-sensitive embedded designs where low power consumption and deterministic real-time behavior matter more than raw compute throughput.
Key features of the PIC16LF18313-I/RF include a 5-channel 10-bit ADC, a 5-bit DAC, multiple PWM outputs, Core Independent Peripherals (CIPs) such as CWG and CLC, Peripheral Pin Select (PPS) for flexible digital peripheral pin mapping, and on-chip support for I2C, SPI, and EUSART communications. The 'LF' prefix denotes the wide 1.8V to 3.6V operating voltage range optimized for battery applications.
Architecturally, the part uses Microchip's enhanced mid-range 8-bit PIC16 CPU core with a 14-bit instruction word and a hardware multiplier, providing a balance of code density, deterministic interrupt latency, and low active current. The integrated nanoWatt XLP sleep modes and ultra-low-power wake sources make it well-suited to energy-harvesting and always-on IoT endpoints.
Typical applications include IoT sensor nodes, wearable health devices, remote controls, LED lighting controllers, low-cost motor control loops, and battery-powered consumer electronics. The compact 8-pin UDFN footprint also enables miniaturized designs where PCB real estate is at a premium.
When designing with this MCU, ensure the exposed pad is properly soldered to the PCB ground plane for both thermal dissipation and electrical grounding. Decouple VDD with a 100nF ceramic capacitor placed within 3mm of the supply pin, and use the PPS feature to remap peripherals without changing the PCB layout.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the standalone manufacturer product page, giving engineers an actionable reference for sourcing and substituting the PIC16LF18313-I/RF.
Drop-in alternatives for PIC16LF18313-I/RF — 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 PIC16LF18313-I/RF (same form factor and footprint) — differing in ADC, Core Architecture, DAC, Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18313-E/RF
✅ Drop-In✓ In Stock
$0.7 / Unit
View Datasheet →PIC16F18313-I/RF
✅ Drop-In✓ In Stock
$0.66 / Unit
View Datasheet →PIC16LF18313T-I/RF
✅ Drop-In✓ In Stock
$0.68 / Unit
View Datasheet →PIC16LF18313-I/RF Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-Bit |
| Maximum Clock Speed | 32 MHz |
| Program Memory Size | 3.5 KB (2K x 14) FLASH |
| RAM Size | 256 B |
| EEPROM Size | 256 B |
| Data Bus Width | 8-Bit |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Operating Temperature Range | -40C to +85C (Industrial) |
| Number of I/O Pins | 6 (approx., per UDFN-8) |
| ADC | 5-channel x 10-bit |
| DAC | 1-channel x 5-bit |
| Communication Interfaces | I2C, SPI, EUSART |
| Package / Case | 8-UDFN Exposed Pad (3x3 mm) |
| Mounting Type | Surface Mount |
| Low-Power Feature | XLP (eXtreme Low Power), nanoWatt |
| PPS (Peripheral Pin Select) | Yes |
| RoHS Status | Compliant |
PIC16LF18313-I/RF Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Pin 2 | RA5 — GPIO / analog input / PWM output (PPS-mappable) |
| Pin 3 | RA4 — GPIO / analog input / PWM output (PPS-mappable) |
| Pin 4 | RA3/MCLR — GPIO or Master Clear (reset) input |
| Pin 5 | RA2 — GPIO / analog input / PWM output (PPS-mappable) |
| Pin 6 | RA1 — GPIO / analog input / PWM output (PPS-mappable) |
| Pin 7 | RA0 — GPIO / analog input / PWM output (PPS-mappable) |
| Pin 8 | VSS — Ground reference |
| Pin EP | EP — Exposed pad - thermal and electrical ground, must be soldered to PCB ground plane |
Typical Applications
PIC16LF18313-I/RF is suitable for 6 applications: IoT Sensor Nodes, Wearable Health Devices, Remote Controls, LED Lighting Controllers, Low-Cost Motor Control, Battery-Powered Consumer Electronics.
IoT Sensor Nodes
The PIC16LF18313-I/RF is ideal for IoT sensor endpoints where 1.8V to 3.6V operation, 32MHz CPU speed, and deep-sleep nanoWatt XLP modes extend battery life to years on a single coin cell. Its 5-channel 10-bit ADC handles multiple analog sensors such as temperature, humidity, and light without external signal conditioning, while the CLC and CWG Core Independent Peripherals offload pulse counting and waveform generation from the CPU. The 8-UDFN 3x3 mm package and PPS feature let designers remap I2C, SPI, or EUSART to any GPIO, simplifying PCB layout when module variants share one base board across different sensor populations.
Recommended
Wearable Health Devices
Wearables benefit from the PIC16LF18313-I/RF's combination of low active current, 1.8V minimum supply, and compact 8-UDFN footprint. The 5-bit DAC and PWM outputs can drive LED pulse oximetry or heart-rate indicator circuits, while the 10-bit ADC digitizes photodiode or bio-impedance signals. Sleep current below 1 uA in XLP modes lets the device spend most of its time in deep sleep, waking only on a timer or sensor interrupt to take a measurement and transmit via the integrated EUSART or SPI to a BLE companion. The exposed pad provides a low-impedance thermal path against skin-contact enclosures.
Recommended
Remote Controls
Battery-powered remote controls leverage the PIC16LF18313-I/RF's low-power XLP technology, integrated 32MHz HFINTOSC eliminating external crystals, and PWM outputs for IR LED modulation. The 3.5KB FLASH holds protocol stacks for NEC, RC5, or proprietary IR codes, while the 256 bytes of EEPROM stores learned remote pairing data. The 8-UDFN 3x3 mm package fits behind buttons in compact wand-style remotes, and the 1.8V minimum supply lets designers use a single CR2032 coin cell that lasts for years of standby.
Recommended
LED Lighting Controllers
The PIC16LF18313-I/RF drives multi-channel LED strings through its PWM and Complementary Waveform Generator (CWG) peripherals, supporting smooth color mixing and dimming with up to 16-bit resolution. Its 1.8V to 3.6V supply matches single-cell Li-ion chemistries common in portable lighting, and the 5-bit DAC can trim white-point or temperature-compensate LED forward voltage. The Core Independent Peripherals run PWM and color sequencing without CPU intervention, freeing the core to handle DMX, DALI, or BLE commands over EUSART.
Recommended
Low-Cost Motor Control
Small DC and stepper motor loops use the PIC16LF18313-I/RF's PWM, CWG, and CLC peripherals to generate complementary drive signals with dead-band control, eliminating external gate-driver logic in cost-sensitive applications. The 32MHz instruction rate provides deterministic PWM resolution down to 122Hz per LSB at 8-bit, sufficient for fans, vibrator motors, and small brushed DC loads. The 10-bit ADC reads back shunt current or back-EMF for closed-loop speed control without additional op-amps.
Recommended
Battery-Powered Consumer Electronics
Consumer products such as electronic toys, smart thermometers, and kitchen scales benefit from the PIC16LF18313-I/RF's tiny 8-UDFN footprint, low-voltage operation, and on-chip peripherals that minimize external component count. The 5-channel ADC directly digitizes thermistor, load-cell, and battery-voltage signals, while the 5-bit DAC drives beepers or reference voltages. XLP sleep currents below 30 nA allow shelf-life measured in years from a single coin cell, and PPS lets designers reuse the same PCB layout across multiple SKUs with different pin assignments.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18313-I/RF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18313-E/RF | PIC16F18313-I/RF | PIC16LF18313T-I/RF |
|---|---|---|---|---|
| Package | 8-UDFN (3x3 mm) EP | 8-UDFN (3x3 mm) EP - same | 8-UDFN (3x3 mm) EP - same | 8-UDFN (3x3 mm) EP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Supply Voltage Range | 1.8V to 3.6V | 1.8V to 3.6V | 2.3V to 5.5V | 1.8V to 3.6V |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| Maximum Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Program FLASH | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| Data RAM | 256 B | 256 B | 256 B | 256 B |
| ADC Channels | 5 x 10-bit | 5 x 10-bit | 5 x 10-bit | 5 x 10-bit |
Key Differentiators
- Widest low-voltage operation in 8-UDFN class (vs PIC16F18313-I/RF)
- Industrial temperature grade standard (vs PIC16LF18313-E/RF)
- Identical 3.5KB FLASH, RAM, and EEPROM across the family (vs PIC16LF18313T-I/RF)
Design Notes
Solder the exposed pad (EP) of the 8-UDFN package directly to a PCB ground plane that is at least 16 mm^2 of continuous copper. The EP serves both as the primary thermal dissipation path and the lowest-inductance ground reference for the MCU. Use at least 5 thermal vias (0.3 mm drill, 0.6 mm pad) connecting the EP to inner-plane copper. Place a 100nF 0402 ceramic decoupling capacitor within 3 mm of the VDD pin, with its ground return directly to the EP ground pour to minimize supply ripple during PWM transitions.
The PIC16LF18313-I/RF draws approximately 30 nA in deep sleep with WDT disabled, allowing multi-year coin-cell operation. Enable the nWIRED interrupt-on-change feature to wake the MCU only on a defined edge event without keeping the CPU clocked. When the LFINTOSC (31 kHz) is used as the system clock, expect roughly 11 uA/MIPS, so brief active-mode bursts at 32MHz followed by immediate sleep yield the lowest average current for duty-cycled sensor applications.
Do not leave MCLR floating; tie it to VDD through a 10 kohm resistor or drive it actively, or use the internal MCLR disable (CONFIG_MCLRE = OFF) and dedicate RA3 as a digital I/O. Verify PPS register unlock sequence (PPSLOCK bit) before remapping peripherals, otherwise writes are silently ignored. The 'LF' variant minimum voltage is 1.8V - below that, the FLASH programming algorithm may fail or read incorrect data. Always check the device ID via the Device ID registers after programming to confirm the correct silicon revision is installed.
Route the ICSPDAT and ICSPCLK pins close to the ICSP connector with short, parallel traces and a ground guard on each side to keep in-circuit programming reliable. Keep the ADC analog traces (RA0-RA4) away from the PWM and digital switching lines, and place the ADC reference bypass capacitor (0.1 uF) as close as possible to the VREF+ pin. When using the HFINTOSC at 32 MHz, place a 10 uF bulk capacitor plus 100 nF decoupling to absorb peak CPU current spikes during interrupt bursts.
Compliance Information
RoHS and REACH compliant per Microchip product page. Standard industrial -40C to +85C temperature grade - not AEC-Q100 qualified for automotive under-hood. Choose -E variant (-40C to +125C) for harsher environments, but still no AEC-Q100 certification.
