PIC16LF1718-I/SO - 32MHz 8-Bit XLP MCU, 28KB Flash, 28-SOIC | Microchip
MPN: PIC16LF1718-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.58 | $25.80 |
| 100 | $2.31 | $231.00 |
| 500 | $2.04 | $1,020.00 |
| 1,000 | $1.77 | $1,770.00 |
PIC16LF1718-I/SO Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, Flash program memory, SRAM, EEPROM, and a set of on-chip peripherals (ADC, timers, communication interfaces, comparators, etc.) into one package. The 8-bit class sits in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. Microchip PIC microcontrollers are based on a RISC-like Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access.
Key features include 28KB (16K x 14) self-programmable Flash, 2KB RAM, 10-bit ADC with computation (ADC2), on-chip op-amps, Core Independent Peripherals (CLC, COG, NCO, Zero Cross Detect), and Peripheral Pin Select for flexible I/O mapping. The XLP variants add deep sleep, idle, and dozing modes with sub-microamp quiescent current to extend battery life. The 28-SOIC package provides a small footprint suitable for hand-held and space-constrained designs.
Typical applications include sensor signal conditioning, low-power IoT sensor nodes, battery-powered instruments, consumer appliances, lighting controls, and general-purpose embedded control where integrated analog reduces BOM. The op-amps and 10-bit ADC allow direct interface to analog sensors without external amplifiers.
When designing with this part, verify the operating voltage range matches your power source; the LF variant supports 1.8V-3.6V operation whereas the standard PIC16F1718 supports 1.8V-5.5V. Choose the LF variant for battery-driven products; choose the standard F variant if you need 5V GPIO compatibility. Configure unused pins as outputs and ensure the MCLR pin is properly biased.
Drop-in alternatives for PIC16LF1718-I/SO — 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 PIC16LF1718-I/SO (same form factor and footprint) — differing in Core Architecture, Core Independent Peripherals, Package, Program Memory (Flash), ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1718-I/SO
✅ Drop-In✓ In Stock
$1.3 / Unit
View Datasheet →PIC16LF1716-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1717-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1713-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1709-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1718-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 RISC |
| Program Memory (Flash) | 28KB (16K x 14) |
| Data RAM | 2KB |
| Maximum CPU Speed | 32 MHz |
| Package | 28-SOIC |
| Pin Count | 28 |
| ADC | 10-bit with computation (ADC2) |
| Operating Voltage Range | 1.8V to 3.6V (LF variant) |
| Operating Temperature Range | -40C to +85C (industrial, -I suffix) |
| On-Chip Op-Amps | Yes |
| Core Independent Peripherals | CLC, COG, NCO, Zero Cross Detect |
| Peripheral Pin Select (PPS) | Yes |
| Low-Power Technology | XLP (eXtreme Low Power) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LF1718-I/SO Pin Configuration
| Pin 1 | MCLR/VPP — Reset input / programming voltage |
| Pin 2 | RA0/AN0 — PORTA bit 0 / ADC input |
| Pin 3 | RA1/AN1 — PORTA bit 1 / ADC input |
| Pin 4 | RA2/AN2 — PORTA bit 2 / ADC input |
| Pin 5 | RA3/AN3 — PORTA bit 3 / ADC input |
| Pin 6 | RA4/AN4 — PORTA bit 4 / ADC input |
| Pin 7 | RA5/AN5 — PORTA bit 5 / ADC input |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7 — PORTA bit 7 |
| Pin 10 | RA6 — PORTA bit 6 |
| Pin 11 | RC0 — PORTC bit 0 |
| Pin 12 | RC1 — PORTC bit 1 |
| Pin 13 | RC2 — PORTC bit 2 |
| Pin 14 | RC3 — PORTC bit 3 |
| Pin 15 | RC4 — PORTC bit 4 |
| Pin 16 | RC5 — PORTC bit 5 |
| Pin 17 | RC6 — PORTC bit 6 |
| Pin 18 | RC7 — PORTC bit 7 |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage |
| Pin 21 | RB0 — PORTB bit 0 |
| Pin 22 | RB1 — PORTB bit 1 |
| Pin 23 | RB2 — PORTB bit 2 |
| Pin 24 | RB3 — PORTB bit 3 |
| Pin 25 | RB4 — PORTB bit 4 |
| Pin 26 | RB5 — PORTB bit 5 |
| Pin 27 | RB6/ICSPCLK — PORTB bit 6 / ICSP clock |
| Pin 28 | RB7/ICSPDAT — PORTB bit 7 / ICSP data |
Typical Applications
PIC16LF1718-I/SO is suitable for 6 applications: IoT Sensor Node (Battery Powered), Industrial Sensor Conditioning, Smart Lighting Control, Consumer Appliance Control, Portable Health & Medical Device, Automotive Body Electronics (Non-Safety).
IoT Sensor Node (Battery Powered)
The PIC16LF1718-I/SO is well suited to battery-powered IoT sensor nodes because its LF voltage range of 1.8V-3.6V combined with XLP sleep modes and sub-microamp quiescent current enables multi-year coin-cell operation. The integrated 10-bit ADC with computation (ADC2) handles sensor digitization directly, while the on-chip op-amps condition analog signals without external amplifiers, reducing BOM and PCB area. Core Independent Peripherals like CLC, NCO, and Zero Cross Detect run autonomously from the CPU, keeping wake events short. Placed on a 2-layer PCB with a 32.768kHz crystal for low-power timing, this MCU directly drives sensors and an SPI/UART-attached radio module for periodic telemetry transmissions.
Recommended
Industrial Sensor Conditioning
The PIC16LF1718-I/SO fits industrial sensor conditioning applications because its on-chip op-amps interface directly with bridge sensors, RTDs, and 4-20mA current loops, while the 10-bit ADC with computation performs oversampling and averaging in hardware. The 32MHz CPU provides real-time response for closed-loop control, and the wide -40C to +85C industrial temperature range handles harsh factory environments. Unlike discrete op-amp solutions, integrating amplification and conversion on a single die eliminates noise pickup between stages. Designed into a sensor transmitter board with SPI-driven calibration EEPROM, this MCU delivers calibrated analog outputs to a PLC.
Recommended
Smart Lighting Control
The PIC16LF1718-I/SO is suitable for smart lighting control because its Complementary Output Generator (COG) peripheral generates precise, dead-time-corrected PWM for LED dimming and driver MOSFET control without CPU intervention, freeing the core for higher-level communication. The Zero Cross Detect peripheral enables AC-line synchronized triac or zero-voltage switching, while Peripheral Pin Select (PPS) allows flexible PCB routing of PWM outputs to whichever pins suit the layout. The 10-bit ADC reads ambient light sensors and feedback photodiodes for closed-loop brightness control. Deployed in LED bulbs, fixtures, and DMX-style lighting nodes, this MCU reduces component count while providing flicker-free dimming.
Recommended
Consumer Appliance Control
The PIC16LF1718-I/SO is appropriate for consumer appliance control because its Core Independent Peripherals (CLC) handle appliance timing-critical tasks like overcurrent detection, motor commutation triggers, and buzzer generation in hardware, while the main CPU manages user interface and safety logic. The integrated op-amps condition sensor inputs for temperature, pressure, or current sensing directly, and the 28KB Flash provides ample space for state-machine firmware. The 28-SOIC package fits within compact appliance control boards, while the -I industrial temperature rating (-40C to +85C) survives near heating elements. Typical deployments include coffee machines, washing machine control boards, and rice cookers.
Recommended
Portable Health & Medical Device
The PIC16LF1718-I/SO is well matched to portable health and medical peripherals because its XLP sleep modes allow multi-month battery life in intermittent-use devices like blood pressure monitors, pulse oximeters, and digital thermometers. The on-chip op-amps amplify photodiode signals from pulse oximetry sensors, while the 10-bit ADC with oversampling provides adequate resolution for heart rate trending. Peripheral Pin Select (PPS) simplifies PCB routing of analog sensor inputs to ADC channels, reducing board size. The LF variant's 1.8V-3.6V range suits two AAA cells directly. Designed into compact handheld devices, this MCU meets IEC 61010-style EMC margins with proper PCB layout.
Recommended
Automotive Body Electronics (Non-Safety)
The PIC16LF1718-I/SO is useful for non-safety automotive body electronics such as ambient lighting, seat control switches, and interior accessory modules. The integrated op-amps and ADC handle potentiometer and analog switch inputs, while the COG peripheral drives LED strings without CPU overhead, enabling smooth animation effects. For safety-critical applications like airbag or braking systems, select the AEC-Q100 qualified PIC16F1718 variant instead; the LF variant is best for non-safety accessory ECUs. The -I industrial temperature rating supports under-dash environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1718-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1718-I/SO | PIC16LF1716-I/SO | PIC16LF1717-I/SO | PIC16LF1713-I/SO | PIC16LF1709-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) |
| Brand | Microchip Technology | Microchip Technology (same) | Microchip Technology (same) | Microchip Technology (same) | Microchip Technology (same) | Microchip Technology (same) |
| Flash Memory | 28KB | 28KB | 16KB | 14KB | 8KB | 8KB |
| RAM | 2KB | 2KB | 1KB | 1KB | 1KB | 1KB |
| Operating Voltage | 1.8V to 3.6V | 1.8V to 5.5V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V |
| Maximum CPU Speed | 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 |
| On-Chip Op-Amps | Yes | Yes | Yes | Yes | Yes | Yes |
| Core Independent Peripherals | CLC, COG, NCO, ZCD | CLC, COG, NCO, ZCD | CLC, COG, NCO, ZCD | CLC, COG, NCO, ZCD | CLC, COG, NCO, ZCD | CLC, NCO |
Key Differentiators
- Higher Flash/RAM headroom within the same 28-SOIC footprint (vs PIC16LF1716-I/SO)
- Full Core Independent Peripherals suite (CLC, COG, NCO, ZCD) (vs PIC16LF1709-I/SO)
- Lower maximum VDD for true low-voltage battery operation (vs PIC16F1718-I/SO)
Design Notes
The LF variant supports 1.8V-3.6V VDD. Decouple VDD with a 100nF ceramic capacitor placed within 5mm of each VDD/VSS pair. For battery-powered designs, add a 10uF bulk capacitor near the MCU to handle inrush from radio modules or sensor excitations. Estimate: at 32MHz active, the PIC16LF1718 consumes approximately 7mA; in XLP sleep with RTC running, it drops below 1uA.
Route the ICSP pins (RB6/ICSPCLK, RB7/ICSPDAT) to a 6-pin header with a dedicated trace to the MCU and avoid sharing these signals with high-frequency peripherals. Place MCLR pull-up (typically 10k) close to the pin and avoid long traces that pick up noise. Exposed pad variants are unavailable on 28-SOIC, so the thermal pad is the bottom of the package; provide a ground copper pour under the device for thermal spreading.
Do not exceed 3.6V on the LF variant; the PIC16F1718 supports up to 5.5V. Configure unused pins as digital outputs (not inputs) to minimize current draw. Do not skip the MCLR pull-up - floating MCLR causes spurious resets. When using the on-chip op-amps, route analog inputs away from PWM outputs and digital switching lines to avoid coupling. PPS assignments must be unlocked before changing; forgetting the unlock sequence locks the peripheral.
Compliance Information
RoHS and lead-free compliant per Microchip product page. PIC16LF1718-I/SO is not AEC-Q100 qualified; for AEC-Q100 automotive applications, choose PIC16F1718-I/SO automotive variant or PIC16LF1718-E/SP extended temperature grade.
