PIC16LF15345-I/P - 8-Bit XLP MCU, 14KB Flash, 20-PDIP | Microchip
MPN: PIC16LF15345-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.83 | $1.83 |
| 10 | $1.62 | $16.20 |
| 100 | $1.42 | $142.00 |
| 500 | $1.21 | $605.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC16LF15345-I/P Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU, non-volatile Flash for code, volatile SRAM for data, and configurable digital/analog peripherals on one silicon die. In a system hierarchy, the PIC16LF15345 sits within: microcontroller -> embedded controller -> semiconductor device, and targets low-power mixed-signal embedded roles where a full Cortex-M part would over-shoot on BOM cost and energy budget. Architecturally it belongs to Microchip's PIC® XLP™ family, the industry's reference lineage for low-power 8-bit controllers (with the same 14-bit instruction word tradition found across PIC10/12/16/18 families). The LF prefix specifically denotes the Wide-Voltage / XLP die revision, distinguished from the regular PIC16F15345 which is rated 2.3 V – 5.5 V.
Three headline specifications define the part: (1) ultra-low XLP sleep current, (2) 14 KB self-programmable Flash with 1 KB SRAM, and (3) four Core-Independent peripherals (CLC, CWG, NCO, Hardware Limit Timer) that off-load timing-critical tasks from the CPU. The CWG pair, for example, generates complementary gate-drive waveforms with dead-band control suitable for half-bridge converters or motor commutation without software overhead; the CLCs let designers synthesize logic gates, multiplexers, or PWM modulators purely in hardware, slashing firmware complexity.
Circuit-level benefits include instruction-level compatibility with the rest of the PIC16 family, free MPLAB X IDE + XC8 toolchain support, and on-chip debugging through ICD/ICSP. The 20-PDIP package preserves breadboard-friendly 2.54 mm pin pitch and 100 mil row spacing, which is why this exact part remains the most popular choice for education, evaluation, and breadboarded prototypes despite smaller QFN/SOIC variants being offered.
Typical applications include low-power wireless sensor node controllers, battery-powered IoT edge nodes, consumer white-goods user-interface panels, automotive interior lighting and motor drivers, and industrial sensor-transmitter front ends. Pick the LF (1.8 V) variant when the design is battery-powered or needs a wide supply tolerance; pick the non-LF F variant when running directly from a regulated 3.3 V or 5 V rail. In all cases the same 20-PDIP pinout is reused, preserving layout and firmware across variants.
Design tip: place a 100 nF decoupling capacitor within 2-3 mm of each power/ground pin pair, keep the ICSP/PGEC/PGED traces short and reserved for the debugger, and use MCLR with a 10 kΩ pull-up and direct-to-ground 100 nF for robust reset (do not leave MCLR floating). Verify the LF variant's 1.8 V minimum at the lowest operating temperature; some peripherals such as the ADC and BOR have tighter minimums than the CPU.
This page synthesizes verified distributor pricing, drop-in same-family alternatives, and application notes compiled from Microchip's PIC16(L)F153xx family brief to help engineers evaluate the device faster than a datasheet-only review.
Drop-in alternatives for PIC16LF15345-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 PIC16LF15345-I/P (same form factor and footprint) — differing in ADC, Package, Mounting Type, I/O Pins, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF15355-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF15325-I/P
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16LF15344T-I/SS
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16F15345-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1527-E/PT
✅ Drop-In✓ In Stock
$2.92 / Unit
View Datasheet →PIC16LF1519-I/P
✅ Drop-In✓ In Stock
$1.99 / Unit
View Datasheet →PIC16LF15345-I/P Maximum Ratings & Electrical Characteristics
| Core | PIC® enhanced mid-range 8-bit |
| Program Memory (Flash) | 14 KB (8K × 14 words) |
| SRAM | 1 KB |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range (LF) | 1.8 V to 3.6 V |
| Temperature Grade | Industrial -40 °C to +85 °C |
| Package | 20-pin PDIP (P) — through-hole |
| Pin Count | 20 |
| I/O Pins | Up to 18 |
| ADC | 10-bit, with Computation (ADC²) |
| DAC | 5-bit DAC |
| Comparators | 1 (with selectable reference) |
| PWM | 4 × 10-bit PWM (with CWG) |
| CLC (Configurable Logic Cell) | 4 |
| EUSART | 2 |
| SPI | Yes |
| I²C | Yes (MSSP) |
| Mounting Type | Through-Hole (THT, 2.54 mm pitch) |
| MSL Level | Not applicable (through-hole) |
| RoHS Status | Compliant |
PIC16LF15345-I/P Pin Configuration
| Pin 1 | VPP/MCLR/RE3 — Programming voltage / Master Clear with internal pull-up / RE3 input |
| Pin 2 | RA0 — PORTA bit 0 with IOC, analog-capable |
| Pin 3 | RA1 — PORTA bit 1 with IOC, analog-capable |
| Pin 4 | RA2 — PORTA bit 2 with IOC, analog-capable |
| Pin 5 | RA3 — PORTA bit 3 with IOC, analog-capable |
| Pin 6 | RA4 — PORTA bit 4 with IOC |
| Pin 7 | RA5 — PORTA bit 5 with IOC, analog-capable |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7/OSC1/CLKIN — RA7 I/O / crystal oscillator input / external clock input |
| Pin 10 | RA6/OSC2/CLKOUT — RA6 I/O / crystal oscillator output / CLKOUT |
| Pin 11 | RC0 — PORTC bit 0 with IOC |
| Pin 12 | RC1 — PORTC bit 1 with IOC |
| Pin 13 | RC2 — PORTC bit 2 with IOC |
| Pin 14 | RC3 — PORTC bit 3 with IOC |
| Pin 15 | RC4 — PORTC bit 4 with IOC |
| Pin 16 | RC5 — PORTC bit 5 with IOC |
| Pin 17 | RC6 — PORTC bit 6 with IOC |
| Pin 18 | RC7 — PORTC bit 7 with IOC |
| Pin 19 | VSS — Ground reference (second GND pin) |
| Pin 20 | VDD — Positive supply (1.8 V – 3.6 V for LF variant) |
Typical Applications
PIC16LF15345-I/P is suitable for 6 applications: Battery-Powered IoT Sensor Node, White-Goods User-Interface Panel Controller, Automotive Interior Lighting & Motor Driver, Industrial Sensor Transmitter / 4-20 mA Loop, Educational Microcontroller Trainer / Hobbyist Board, Compact DC-DC Converter Digital Controller.
Battery-Powered IoT Sensor Node
The PIC16LF15345-I/P suits battery-powered IoT sensor nodes because the LF (1.8 V – 3.6 V) variant combined with XLP technology drops sleep current into the nanoamp range while the 10-bit ADC² with computation handles analog sensor conversions without waking the CPU. Engineers typically pair it with a sub-1 GHz radio like the MRF89XA, use one of the four CLCs to gate the radio enable line, and let the CWG drive a piezo buzzer for alarm annunciation. Per the PIC16(L)F153xx datasheet, with 14 KB Flash the firmware can hold basic LoRaWAN/PHY state machines plus over-the-air update hooks. Trade-off: the device has no USB, so commissioning requires a UART bridge or ICSP.
Recommended
White-Goods User-Interface Panel Controller
In white-goods user-interface panels (washing machines, induction cooktops, dishwashers), the PIC16LF15345-I/P drives capacitive-touch sensing via the on-chip comparators, controls LED indicators through its 4× 10-bit PWMs, and communicates with the main controller using one of its two EUSART peripherals. The 20-PDIP footprint simplifies hand-soldering during small-batch production runs typical for premium appliances. Per the Microchip datasheet, the 1.8 V – 3.6 V supply range allows direct operation from a 2× AA battery backup or 3.3 V LDO. Design note: route PWM outputs away from the comparator inputs to minimize switching noise coupling into touch-sensing channels.
Recommended
Automotive Interior Lighting & Motor Driver
The PIC16LF15345-I/P is widely used in automotive interior lighting applications such as ambient LED strips and HVAC stepper motors. The Complementary Waveform Generator (CWG) generates anti-overlap gate-drive signals for half-bridge FET drivers with sub-microsecond dead-band control, while the four 10-bit PWMs dim LEDs across the full DNL range. The 'I' (industrial -40 °C to +85 °C) suffix handles under-dash thermal stress per the PIC16(L)F153xx datasheet. Note that the PIC16LF15345-I/P is NOT AEC-Q100 qualified; automotive designs requiring AEC-Q100 should select the PIC16F15345-E/QTP variant or migrate to a dsPIC33 or PIC18F K-series part.
Recommended
Industrial Sensor Transmitter / 4-20 mA Loop
Industrial 4-20 mA sensor transmitters use the PIC16LF15345-I/P for signal conditioning of bridge pressure sensors or RTDs via the 10-bit ADC² with computation. The 5-bit DAC plus op-amp simplifies loop current setting, while the comparator watches for fault thresholds. The 20-PDIP package survives reflow-free hand assembly at small volumes common to industrial instrumentation. Per the datasheet, the LF voltage range tolerates battery-supplied loop-powered designs at 3.6 V max. Always add external TVS (e.g. SMAJ5.0CA) and a self-healing PTC for IEC 61000-4-2/4 surge compliance.
Recommended
Educational Microcontroller Trainer / Hobbyist Board
The 20-PDIP PIC16LF15345-I/P (with the LF voltage range) is one of the most popular 8-bit trainer devices because the 2.54 mm pin pitch drops directly into breadboards, educational shields, and Arduino-Shim-compatible PCBs. Students learn assembly and C using the free MPLAB X IDE with XC8 compiler and PICkit 4 / Snap programmer. The PIC16(L)F153xx datasheet documents ICD/ICSP on dedicated PGEC/PGED pins without sharing GPIO, simplifying lab setup. Universities teaching embedded systems particularly value the CLC and CWG peripherals since they introduce Core Independent Peripherals early in the curriculum.
Recommended
Compact DC-DC Converter Digital Controller
Using the PIC16LF15345-I/P as a digital controller for non-isolated buck/boost converters leverages the on-chip CWG for complementary gate timing, the NCO for high-resolution frequency setting, and the HLT for cycle-by-cycle current limiting. Per the PIC16(L)F153xx datasheet, the 32 MHz CPU executes the discrete control loop in tens of microseconds, matching the bandwidth of slow-responding point-of-load converters. Trade-off vs a DSPIC: this device lacks DSP instructions, so all math runs in C with fixed-point; expect 5-10 kHz loop bandwidth maximum. The LF 1.8 V – 3.6 V input is convenient when bias comes from a 3.3 V auxiliary rail.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF15345-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF15355-I/P | PIC16LF15325-I/P | PIC16F15345-I/P |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-PDIP (P) | 20-PDIP (P) - same | 20-PDIP (P) - same | 20-PDIP (P) - same |
| Operating Voltage | 1.8 V – 3.6 V (LF) | 1.8 V – 3.6 V (LF) | 1.8 V – 3.6 V (LF) | 2.3 V – 5.5 V (non-LF) |
| Flash | 14 KB | 14 KB + larger SRAM | 7 KB | 14 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| CLC Cells | 4 | 4 | 4 | 4 |
| ADC | 10-bit with ADC² | 10-bit with ADC² | 10-bit with ADC² | 10-bit with ADC² |
| EUSART Ports | 2 | 2 | 2 | 2 |
Key Differentiators
- Full LF 1.8 V – 3.6 V operating range with XLP nanoamp sleep (vs PIC16F15345-I/P)
- Four CLC + CWG + NCO + HLT — full set of Core Independent Peripherals in 20-PDIP (vs PIC16LF15325-I/P)
- 20-PDIP through-hole for breadboard and hand-solder assembly (vs PIC16LF15355-I/SS)
Design Notes
The PIC16LF15345-I/P is rated 1.8 V – 3.6 V. Place a 100 nF decoupling capacitor within 2-3 mm of each VDD/VSS pin pair, plus a bulk 1-10 µF tantalum or ceramic on the supply rail. Add an MCLR pull-up of 10 kΩ to VDD with a direct-to-ground 100 nF cap on the MCLR pin; do NOT leave MCLR floating. If the supply will dip below 1.8 V (e.g. Li-Ion near end-of-life), enable the BOR (Brown-Out Reset) with the proper V_BOR threshold so the firmware gets a clean reset signal before illegal execution occurs.
Route the ICSP PGEC/PGED traces short (<50 mm) and reserved - do not share with high-speed PWM or analog sensor lines. CWG outputs that drive power FETs should be routed away from the ADC analog inputs to minimize switching-noise coupling; use a ground-guard trace between the CWG outputs and any 5+ kHz analog signal. Estimated for a 4-layer 1.6 mm FR4 stack-up: keep the CWG trace length below 25 mm to limit ringing under 200 V/ns edge rates of typical gate drivers.
Three recurring firmware bugs on PIC16LF15345-I/P bring-ups: (1) forgetting to enable the LFINTOSC trim registers, which leaves the 32 MHz HFINTOSC at ±5% instead of ±1%; (2) leaving the WDT on while in Sleep, eating battery life in IoT sensors - set WDTCPS to a long prescaler or disable in sleep; (3) configuring a FOSC configuration bit that conflicts with the chosen oscillator mode, causing code to lock-up after a POR. Always read the Configuration Bit Addendum in the PIC16(L)F153xx datasheet before locking the board layout.
In the 20-PDIP package, the PIC16LF15345-I/P thermal resistance is approximately 80 °C/W in still air and 50 °C/W on a 1-square-inch copper pour. At maximum CPU activity (32 MHz, all peripherals on, VDD = 3.6 V), the device burns approximately 12 mW. For industrial -40 °C to +85 °C ambient operation, headroom is comfortable - internal junction stays at most ~76 °C. No external heatsink is required even in enclosed industrial enclosures, but ensure the DIP package is not potted in thermally insulating compound.
Compliance Information
RoHS/REACH compliant per Microchip product page. The PIC16LF15345-I/P is NOT AEC-Q100 qualified - designers needing automotive qualification should evaluate AEC-Q100 variants in the PIC16F15345/PIC18F K-series families or migrate to dsPIC33. Through-hole 20-PDIP is exempt from MSL moisture-sensitivity classification.
