PIC16LF18313-I/SN - 8-bit MCU, 3.5KB Flash, 32MHz, 8-SOIC | Microchip
MPN: PIC16LF18313-I/SN ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.2 | $1.20 |
| 10 | $1.05 | $10.50 |
| 100 | $0.93 | $93.00 |
| 500 | $0.85 | $425.00 |
| 1,000 | $0.78 | $780.00 |
PIC16LF18313-I/SN Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data-path CPU, on-chip program memory, data RAM, peripherals, and I/O. It belongs to the hierarchy: microcontroller -> embedded computer -> semiconductor. The PIC16F183xx family targets low-power general-purpose and battery applications, combining Core Independent Peripherals (CIPs) such as CLC, NCO, CWG, and PPS with eXtreme Low Power (XLP) sleep modes measured in nA.
Key features include a 10-bit ADC with 5-bit DAC, two 10-bit PWM channels, one Capture/Compare/PWM (CCP), one Configurable Logic Cell (CLC), a Numerically Controlled Oscillator (NCO), a Complementary Waveform Generator (CWG), and Peripheral Pin Select (PPS) for flexible I/O mapping. The device operates from 1.8V to 3.6V (LF variant) and supports sleep currents as low as 20 nA typical.
The PIC16LF18313 uses Microchip's enhanced mid-range 8-bit PIC16 CPU core with a 14-bit instruction word and hardware multiplier, executing most instructions in one cycle. The integrated Core Independent Peripherals operate autonomously without CPU intervention, freeing the core for application logic and enabling deterministic analog and timing behavior.
Typical applications include IoT sensor nodes, battery-powered remote controls, wearable health monitors, low-power wireless sensor endpoints, and compact consumer devices where small package and low sleep current are critical. The 8-SOIC footprint suits hand-soldering and small-form-factor PCBs.
When designing with this part, always select the LF (low-voltage) variant for 1.8V operation; the non-LF PIC16F18313 requires 2.3V minimum. Use Peripheral Pin Select (PPS) to remap digital peripherals, and exploit CIPs (CLC/NCO/CWG) to offload timing-critical tasks from the CPU.
This page synthesizes distributor pricing, drop-in alternative MPNs sharing the 8-SOIC footprint, and practical design notes not found in the manufacturer datasheet summary.
Drop-in alternatives for PIC16LF18313-I/SN — 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/SN (same form factor and footprint) — differing in Package, ADC, I/O Pins, Core Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18313T-I/SN
✅ Drop-In✓ In Stock
$0.65 / Unit
View Datasheet →PIC16LF18313-E/SN
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16F18313-I/SN
✅ Drop-In✓ In Stock
$0.71 / Unit
View Datasheet →PIC16F18313T-I/SN
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.74 / Unit
View Datasheet →PIC16LF18313-I/SN Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| Data SRAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Supply Voltage (LF variant) | 1.8 V to 3.6 V |
| Package | 8-SOIC (3.90 mm / 0.154 inch body) |
| ADC | 10-bit |
| DAC | 5-bit |
| PWM Channels | 2 x 10-bit |
| CCP Modules | 1 |
| Configurable Logic Cell (CLC) | Yes |
| Numerically Controlled Oscillator (NCO) | Yes |
| Complementary Waveform Generator (CWG) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| eXtreme Low Power (XLP) | Yes (sleep currents ~20 nA typical) |
| RoHS Status | Compliant |
PIC16LF18313-I/SN Pin Configuration
| Pin 1 | RA5/MCLR — GPIO RA5 / Master Clear (reset) input |
| Pin 2 | RA4/AN3 — GPIO RA4 / analog channel 3 |
| Pin 3 | RA3/VPP — GPIO RA3 / programming voltage input |
| Pin 4 | RA2/AN2 — GPIO RA2 / analog channel 2 |
| Pin 5 | RA1/ICSPCLK — GPIO RA1 / ICD clock |
| Pin 6 | RA0/ICSPDAT — GPIO RA0 / ICD data |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply input (1.8 V to 3.6 V) |
Typical Applications
PIC16LF18313-I/SN is suitable for 6 applications: Battery-Powered IoT Sensor Node, Wearable Health Monitor, Remote Control / Consumer HMI, LED Lighting Control, Industrial Sensor Transmitter, Compact Consumer Toys and Gadgets.
Battery-Powered IoT Sensor Node
The PIC16LF18313-I/SN is a strong fit for IoT sensor nodes due to its eXtreme Low Power (XLP) sleep current around 20 nA typical, 1.8 V minimum supply compatible with single-cell Li-ion or coin cells, and Core Independent Peripherals (CLC, NCO, CWG) that operate without waking the CPU. With 3.5 KB Flash and 256 B SRAM it handles small sensing, thresholding, and periodic wake-and-transmit routines. The 10-bit ADC and 5-bit DAC on chip support direct sensor signal conditioning. For multi-year battery life, the LF variant minimizes quiescent current between measurement cycles, and PPS allows remapping the ADC trigger to a timer interrupt without external glue logic. Pair with a sub-GHz or BLE module for the radio side.
Recommended
Wearable Health Monitor
Wearables benefit from the PIC16LF18313-I/SN's 1.8 V operation suited to single-cell Li-Po, 20 nA sleep current for standby, and on-chip 10-bit ADC for direct PPG or temperature sensor reading. The Configurable Logic Cell (CLC) can combine wake signals from a motion sensor without CPU load, while the Numerically Controlled Oscillator (NCO) generates precision tone outputs in sleep. With only 8 pins, the 8-SOIC footprint fits wristbands and patches where PCB area is at a premium. Designers should leverage Peripheral Pin Select to free analog pins for sensor I/O and use CWG for haptic feedback drive. The LF variant ensures the lowest possible quiescent current for overnight wear cycles.
Recommended
Remote Control / Consumer HMI
For IR remote controls and consumer HMI devices, the PIC16LF18313-I/SN delivers 32 MHz CPU speed to handle button-scanning matrices, IR carrier generation, and PWM haptic output. The Complementary Waveform Generator (CWG) produces complementary PWM outputs ideal for H-bridge or buzzer drive, while CCP handles IR protocol timing. Its 3.5 KB Flash is sufficient for protocol stacks (RC5, NEC, SIRC), and 256 B SRAM holds short command buffers. The 1.8 V operation allows two AAA cells in series (3.0 V) with no LDO. PPS lets the designer route UART, PWM, and timers to GPIO without rerouting PCB traces - a major time-saver for remote-control PCBs.
Recommended
LED Lighting Control
The PIC16LF18313-I/SN suits smart LED lighting control through its 10-bit PWM and Complementary Waveform Generator (CWG) for smooth dimming and color-mixing without CPU intervention. The Configurable Logic Cell (CLC) implements MOSFET blanking, and zero-cross-CPU detection in sleep eliminates the need for an external zero-cross IC. Operating at 1.8 V to 3.6 V, it can be powered directly from a small switched-mode supply or a linear regulator. The 10-bit ADC reads light sensors and potentiometers for ambient-aware dimming, while the 5-bit DAC generates reference voltages for constant-current LED drivers. PPS remaps PWM and ADC channels per board layout.
Recommended
Industrial Sensor Transmitter
Industrial 4-20 mA loop-powered or low-voltage sensor transmitters leverage the PIC16LF18313-I/SN's 1.8 V minimum supply and small 8-SOIC footprint. The 10-bit ADC measures bridge sensors or 4-20 mA loops through a sense resistor, while the 5-bit DAC generates excitation or trim voltages. The NCO generates accurate frequency outputs for PWM-to-current conversion without CPU load, and CWG produces complementary FET drive for isolated loops. With only 8 pins, the MCU plus a single op-amp front-end fits in a head-mount probe. The LF variant suits 1.8 V transducer bridges; for harsh environments, the /E variant supports -40C to +125C.
Recommended
Compact Consumer Toys and Gadgets
Toys, electronic novelties, and small consumer gadgets benefit from the PIC16LF18313-I/SN's small 8-SOIC footprint, low 1.8 V operation from a single CR2032 coin cell, and integrated CIPs for sound generation, motor control, and LED animations. The CWG drives small DC motors or solenoids with dead-band control; the CLC implements combinational logic for sensor inputs without firmware overhead. With only 8 pins and Peripheral Pin Select, designers can route UART, PWM, and ADC across the few GPIOs as needed for late-stage design changes. The 3.5 KB Flash stores small audio clips or motion scripts, keeping BOM cost low.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18313-I/SN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18313T-I/SN | PIC16LF18313-E/SN | PIC16F18313-I/SN | PIC16LF18313-I/RF | PIC16F18313T-I/SN |
|---|---|---|---|---|---|---|
| Package | 8-SOIC (3.90 mm) | 8-SOIC (3.90 mm) - same | 8-SOIC (3.90 mm) - same | 8-SOIC (3.90 mm) - same | 8-UDFN - different | 8-SOIC (3.90 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Supply 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 | 2.3 V to 5.5 V |
| Program Flash | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| Data SRAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40 C to +85 C (I grade) | -40 C to +85 C (I grade) | -40 C to +125 C (E grade) | -40 C to +85 C (I grade) | -40 C to +85 C (I grade) | -40 C to +85 C (I grade) |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| PWM Channels | 2 x 10-bit | 2 x 10-bit | 2 x 10-bit | 2 x 10-bit | 2 x 10-bit | 2 x 10-bit |
Key Differentiators
- Lowest voltage operation in PIC16F18313 family (vs PIC16F18313-I/SN)
- Industrial temperature grade with standard pinout (vs PIC16LF18313-E/SN)
- Drop-in compatible with PIC16LF18313T-I/SN (vs PIC16LF18313T-I/SN)
- Core Independent Peripherals reduce firmware burden (vs ATtiny13A (Atmel/Microchip))
Design Notes
Use the LF variant (PIC16LF18313) for 1.8 V operation; the non-LF PIC16F18313 requires 2.3 V minimum and will not start below that threshold. Decouple VDD with a 100 nF ceramic placed within 3 mm of pin 8, plus a 10 uF bulk capacitor for switching loads. Leverage XLP sleep modes (20 nA typical) by configuring unused modules to OFF in firmware and disabling the ADC when not sampling.
The 8-SOIC package has 1.27 mm pin pitch; route all signals on a 0.5 mm grid with 0.2 mm clearance to avoid solder bridging during reflow. Place the ICSP pins (RA0/RA1) on test-point pads to enable in-circuit serial programming without removing the chip. If using PPS to remap peripherals, document the assignment map in firmware headers because the same pin can serve multiple functions.
Do not confuse LF and F variants when sourcing for 3.3 V coin-cell designs - the F variant will fail at 1.8 V. Pin 3 (RA3/VPP) is a high-voltage input during programming; ensure no external circuitry drives this pin above VDD without a current-limiting resistor. The MCLR pin (RA5) can be configured as GPIO only after disabling the MCLR function in the configuration bits - forgetting this step causes the MCU to enter reset whenever RA5 is pulled low.
When using the CWG or PWM to drive external FETs, keep gate traces shorter than 25 mm and add a 100 ohm series gate resistor to dampen ringing. For ADC readings, add a 100 nF bypass capacitor at the analog input pin and route analog signals away from PWM traces to reduce coupling. The 10-bit ADC source impedance should be below 10 kohm for full accuracy.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C) - not AEC-Q100 qualified; for automotive applications choose the automotive-graded variant or PIC16LF18313-E/SN for extended temperature.
