PIC16LF1718T-I/SO - 8-Bit MCU, 28KB Flash, 32MHz XLP | Microchip
MPN: PIC16LF1718T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.71 | $17.10 |
| 100 | $1.55 | $155.00 |
| 500 | $1.4 | $700.00 |
| 1,000 | $1.27 | $1,270.00 |
PIC16LF1718T-I/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (typically Flash), data memory (RAM), and peripheral interfaces such as timers, ADCs, communication ports, and GPIO. The PIC16 family is one of Microchip's mid-range 8-bit architectures, balancing code density (RISC instruction set), low power consumption, and rich on-chip peripherals. XLP (eXtreme Low Power) is Microchip's branded low-power technology that targets sleep currents in the nanoamp range and active currents well below typical 8-bit MCUs.
Key features of this device include integrated peripherals such as a 10-bit ADC, on-chip operational amplifiers (Op Amps), 5/8-bit DACs, Configurable Logic Cells (CLC), Complementary Output Generator (COG), Numerically Controlled Oscillator (NCO), Zero-Cross Detect, and Peripheral Pin Select (PPS) for flexible signal routing. Core Independent Peripherals (CIP) allow hardware-based state-machine operation without CPU intervention, reducing firmware burden and power consumption. The 32 MHz max CPU speed delivers 8 MIPS instruction throughput, sufficient for sensor processing, simple closed-loop control, and serial-protocol bridging.
Architecturally, the device uses Microchip's enhanced mid-range 16-bit instruction word (14-bit opcode) Flash controller with a 16-level hardware stack and prioritized interrupt controller. It supports in-circuit serial programming (ICSP) and In-Circuit Debug (ICD), enabling firmware updates and debug access through just two pins (PGC/PGD), which simplifies field serviceability in deployed IoT nodes.
Typical applications include IoT sensor nodes, wearable health monitors, remote controls, battery-powered thermostats, environmental sensors, and human-machine interface (HMI) panels. The industrial -40C to +85C temperature range supports outdoor enclosures and factory-floor instrumentation without additional screening.
When designing with the PIC16LF1718T-I/SO, ensure the supply rail is decoupled with at least 0.1 uF ceramic plus a bulk capacitor within 5 mm of the VDD pin. The 32 MHz internal oscillator can be left uncalibrated for many applications but should be tuned to within +/- 2% for UART communications at higher baud rates. Use the PPS feature to remap peripherals to alternate pins to ease PCB layout constraints without resorting to internal crossbar rework.
This page synthesizes distributor pricing, drop-in package alternatives in the same SOIC-28 footprint, and field-tested design notes that complement the official Microchip datasheet.
Drop-in alternatives for PIC16LF1718T-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 PIC16LF1718T-I/SO (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Mounting Type, Core Independent Peripherals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1718-I/SO
✅ Drop-In✓ In Stock
$1.77 / Unit
View Datasheet →PIC16LF1718T-I/MV
✅ Drop-In✓ In Stock
$0.91 / Unit
View Datasheet →PIC16LF1718-I/SP
✅ Drop-In✓ In Stock
$1.9 / Unit
View Datasheet →PIC16LF1718-E/MV
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16LF1718T-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1718T-I/SO
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F1718-I/SS
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16LF1718T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 (8-bit enhanced mid-range) |
| Family | PIC XLP 16F |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| RAM | 2 KB |
| Max CPU Speed | 32 MHz |
| Instruction Throughput | 8 MIPS |
| Supply Voltage (VDD) | 1.8 V to 3.6 V (LF low-voltage) |
| ADC | 10-bit |
| DAC | 5/8-bit |
| On-chip Op Amps | Yes |
| Core Independent Peripherals | CLC, COG, NCO, Zero-Cross Detect |
| Peripheral Pin Select (PPS) | Yes |
| Operating Temperature | -40C to +85C (Industrial grade) |
| Package | 28-SOIC (0.295 inch, 7.50 mm body width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Programming/Debug Interface | ICSP (PGC/PGD, 2-wire) |
PIC16LF1718T-I/SO Pin Configuration
| Pin 1 | RA0/ICSPDAT — PORTA bit 0; ICSP data pin |
| Pin 2 | RA1/ICSPCLK — PORTA bit 1; ICSP clock pin |
| Pin 3 | RA2 — PORTA bit 2 (PPS-capable) |
| Pin 4 | RA3/MCLR/VPP — PORTA bit 3, Master Clear (reset) input or programming voltage input |
| Pin 5 | RA4 — PORTA bit 4 (PPS-capable) |
| Pin 6 | RA5 — PORTA bit 5 (PPS-capable) |
| Pin 7 | RE3 — PORTE bit 3, digital-only input |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7/OSC1 — PORTA bit 7 / crystal oscillator input |
| Pin 10 | RA6/OSC2 — PORTA bit 6 / crystal oscillator output |
| Pin 11 | RC0 — PORTC bit 0 (PPS-capable) |
| Pin 12 | RC1 — PORTC bit 1 (PPS-capable) |
| Pin 13 | RC2 — PORTC bit 2 (PPS-capable) |
| Pin 14 | RC3 — PORTC bit 3 (PPS-capable) |
| Pin 15 | RC4 — PORTC bit 4 (PPS-capable) |
| Pin 16 | RC5 — PORTC bit 5 (PPS-capable) |
| Pin 17 | RC6 — PORTC bit 6 (PPS-capable) |
| Pin 18 | RC7 — PORTC bit 7 (PPS-capable) |
| Pin 19 | VSS — Ground reference (digital/analog common) |
| Pin 20 | VDD — Positive supply, 1.8V to 3.6V |
| Pin 21 | RB0 — PORTB bit 0, interrupt-on-change capable |
| Pin 22 | RB1 — PORTB bit 1, interrupt-on-change capable |
| Pin 23 | RB2 — PORTB bit 2, interrupt-on-change capable |
| Pin 24 | RB3 — PORTB bit 3, interrupt-on-change capable |
| Pin 25 | RB4 — PORTB bit 4, interrupt-on-change capable |
| Pin 26 | RB5 — PORTB bit 5, interrupt-on-change capable |
| Pin 27 | RB6/ICSPCLK — PORTB bit 6 / ICSP clock (alternate) |
| Pin 28 | RB7/ICSPDAT — PORTB bit 7 / ICSP data (alternate) |
Typical Applications
PIC16LF1718T-I/SO is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Wearable Health Monitors, Industrial Sensor Conditioners, Smart Remote Controls, Thermostats & Environmental Sensors, Human-Machine Interface (HMI) Panels.
Battery-Powered IoT Sensor Nodes
The PIC16LF1718T-I/SO suits IoT sensor endpoints because its 1.8 V to 3.6 V supply range maps directly onto a single 1S Li-ion or 2xAA alkaline cell. Combined with Microchip's XLP sleep currents under 1 uA and 32 MHz HFINTOSC burst processing, a typical duty-cycled sensor node with read every 60 s can run years on a single coin cell. On-chip peripherals like the 10-bit ADC, op amp, and NCO handle sensor signal-chain and edge-detection in hardware without waking the CPU, while Peripheral Pin Select (PPS) lets designers route an ADC, UART, or PWM to whichever pin simplifies PCB layout.
Recommended
Wearable Health Monitors
Wearable bands and patches benefit from the PIC16LF1718T-I/SO's small 28-SOIC footprint, integrated 10-bit ADC, and on-chip op amp which can directly buffer ECG/GSR electrodes without a separate analog front-end. The LF voltage rating allows the MCU to share a single Li-MnO2 coin cell with an analog sensor chain without a boost converter, reducing BOM and PCB height under 1 mm. Core Independent Peripherals (CLC) implement heart-rate timing logic in hardware so the CPU only wakes for IRQ servicing, supporting battery-life targets of 7+ days in continuous-monitoring modes.
Recommended
Industrial Sensor Conditioners
In factory-floor analog signal conditioners the PIC16LF1718T-I/SO reads 4-20 mA loops or 0-10 V ratiometric transducers using its internal op amp and 10-bit ADC, then publishes the digital value over RS-485 or CAN using PPS-remapped UART. Industrial -40C to +85C operation covers outdoor panel enclosures and unheated cabinets. The 32 MIPS throughput filters and linearizes signals in real time, while the on-chip 5/8-bit DAC drives a 4-20 mA transmitter (XTR105-class) for legacy analog panels, removing a discrete signal generator.
Recommended
Smart Remote Controls
Battery-powered IR/BLE remote controls use the PIC16LF1718T-I/SO as the low-cost low-power brain, where the 28 KB Flash holds multiple protocol libraries (RC5, NEC, SIRC, BLE profiles) and the 32 MHz core processes them at sub-millisecond latency. The integrated op amp amplifies a piezo-cancellation circuit directly, while Core Independent Peripherals generate timed carrier bursts without CPU wake-up, letting a CR2032 cell power the remote for the entire product lifetime. PPS enables routing the TX pin to a single PCB side, simplifying the IR LED placement.
Recommended
Thermostats & Environmental Sensors
HVAC thermostat controls can use the PIC16LF1718T-I/SO to run PID control loops while driving a triac-based load driver and a character display. The 28 KB Flash fits a complete PID scheduler with NTC-thermistor linearization tables, while the 10-bit ADC samples the temperature and humidity sensor inputs. The 1.8 V-3.6 V supply enables shared supply from a small AC-DC step-down transformer, and the -40C to +85C industrial range handles attic and plant-room environments without parametric drift.
Recommended
Human-Machine Interface (HMI) Panels
Small keypad-and-display HMIs use the PIC16LF1718T-I/SO to scan up to 28 GPIO pins for a 4x4 matrix keypad plus 16-segment LCD, with the 28 KB Flash storing interactive menu structures and the 2 KB RAM buffering multi-press events. The on-chip CLC can implement debounce logic purely in hardware, freeing the CPU to update the LCD in low-power mode. Peripheral Pin Select (PPS) routes UART/SPI peripherals to any GPIO, simplifying board layout when the LCD connector and keypad connector are on opposite sides of the PCB.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1718T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1718-I/SO | PIC16LF1718-I/SP | PIC16LF1718-E/MV | PIC16F1718T-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (0.295 inch) | 28-SOIC (0.295 inch) - same | 28-SOIC (0.295 inch) - same | 28-SOIC (0.295 inch) - same | 28-SOIC (0.295 inch) - same |
| Supply Voltage (VDD) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 2.3 V to 5.5 V (F, +15% range shift) |
| Flash / RAM | 28 KB / 2 KB | 28 KB / 2 KB | 28 KB / 2 KB | 28 KB / 2 KB | 28 KB / 2 KB |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) |
| On-chip Op Amps | Yes | Yes | Yes | Yes | Yes |
| Approx Unit Price (qty 1) | $1.85 | $1.80 (est) | $1.90 (est) | $2.10 (est, extended grade) | $1.85 (est) |
Key Differentiators
- True 28-SOIC drop-in form factor for standard PCB land patterns (vs PIC16LF1718T-I/SS)
- Low-voltage LF (1.8 V - 3.6 V) supply range for single-cell battery operation (vs PIC16F1718T-I/SO)
- Integrates 10-bit ADC, op amp, 5/8-bit DAC and Core Independent Peripherals (vs DSPIC33EP128MC204T-I/MV)
- Peripheral Pin Select (PPS) for flexible signal routing (vs PIC16LF1718T-I/ML (QFN-28))
Design Notes
Decouple VDD with a 0.1 uF X7R ceramic capacitor placed within 5 mm of the VDD pin (pin 20) and a bulk 1 uF to 10 uF capacitor across the same VSS plane. Microchip's datasheet explicitly requires this decoupling for the PIC16LF1718T-I/SO to prevent regulator instability and brownout-induced Flash corruption during in-circuit writes. The LF variant operates directly from 1.8 V to 3.6 V, eliminating the need for a 5 V LDO when paired with a single Li-ion cell.
Pin 4 (RA3/MCLR/VPP) must be pulled up to VDD through a 10 kohm resistor (or directly connected for permanent programming-only boards). Leaving MCLR floating blocks in-circuit serial programming (ICSP) at runtime because the device interprets the floating input as an active-low reset. For high-noise industrial environments use an RC delay (10 kohm plus 100 nF) on MCLR to filter out short transients and prevent spurious resets.
Route the ICSP signals (ICSPCLK and ICSPDAT, alternate functions on RA1/RA0 or RB6/RB7) so they reach a programming header without crossing high-noise traces. The 28-SOIC layout tolerates a two-layer board with a solid ground plane below the ICSP pads. Keep analog input traces less than 25 mm long, and place the on-chip op amp input traces away from the HFINTOSC trace to minimize coupling into the 10-bit ADC.
When using the on-chip 10-bit ADC with the integrated op amp, set VDD reference via a 0.1 uF + 10 uF cap pair on the VREF+ pin (per datasheet). For ratiometric measurement use the same VDD as the sensor supply to cancel out power-rail drift. Use the OSCTUNE register to tune the internal HFINTOSC within +/-2% before enabling the UART at baud rates above 9600 bps to keep the link stable across temperature.
When migrating from PIC16LF1718T-I/SS (28-SSOP, 0.209 inch body) to PIC16LF1718T-I/SO (28-SOIC, 0.295 inch body), the PCB land pattern is NOT drop-in: SOIC-28 uses 1.27 mm lead pitch while SSOP-28 also uses 1.27 mm but with a narrower body, requiring the package outline (not just footprint) to change. Always check the microchip design package for both packages before committing to a layout.
Compliance Information
RoHS/REACH compliance inferred from Microchip Technology product page statement. AEC-Q100 qualification is NOT marketed for the standard I-grade; -E (extended) variants operate at -40C to +125C but are not full automotive-grade.
