PIC18LF45K80T-I/ML - 8-bit 64MHz XLP MCU, 32KB Flash | Microchip
MPN: PIC18LF45K80T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.12 | $4.12 |
| 10 | $3.71 | $37.10 |
| 100 | $3.3 | $330.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.65 | $2,650.00 |
PIC18LF45K80T-I/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), and a rich set of peripherals (ADC, timers, communication, I/O). The PIC18F/LF K80 family sits in Microchip's 8-bit PIC18 hierarchy, positioned between the baseline PIC10/12/16 families and the higher-end PIC24/dsPIC architectures; LF variants are the low-voltage, lower-power sub-family for 1.8V-3.6V operation, while F variants target 1.8V-5.5V operation.
Headline specifications include a 64 MHz internal oscillator (16 MIPS), 32 KB Flash, 4 KB SRAM, a 12-bit ADC with up to 11 channels, an on-chip CTMU (Charge Time Measurement Unit) for capacitive touch and precise time-of-flight measurements, and the integrated ECAN peripheral. The QFN-44 package gives 36 user I/O pins and supports surface-mount reflow, which simplifies high-density PCB layouts in space-constrained modules.
Architecturally, the device combines a RISC-style Harvard bus, nanoWatt XLP sleep modes with sub-1 µA standby currents, and the ECAN module that handles CAN 2.0B active/passive with hardware acceptance filters. The CTMU pairs with the ADC to enable mTouch capacitive touch sensing, eliminating an external touch controller in many HMI designs. LF variants are specified down to 1.8V, while the F counterpart PIC18F45K80 runs up to 5.5V.
Typical applications include automotive body and chassis ECUs, industrial sensor nodes with CAN connectivity, low-power remote sensor hubs running from coin cells, capacitive touch human-machine interfaces, and building automation controllers on CAN/LIN backbones. The wide operating voltage window also enables portable instrumentation powered directly from a 3V lithium primary cell.
When designing with this device, budget I/O pins early: ECAN, ADC, and CTMU each consume dedicated pins, so the 36 available I/Os disappear quickly in feature-rich designs. Always add a 100 nF decoupling capacitor next to each supply pin and route the ECAN TX/RX lines as a matched pair; verify against the Microchip family reference manual to avoid pin conflicts with PPS-mapped peripherals.
This page synthesizes distributor stock data, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet by combining BOM context, selection trade-offs, and pinout guidance for the QFN-44 footprint.
Drop-in alternatives for PIC18LF45K80T-I/ML — 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 PIC18LF45K80T-I/ML (same form factor and footprint) — differing in Package, ADC, Core, I/O Pins, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F45K80T-I/ML
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →PIC18LF45K40T-I/ML
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC18LF45K50-I/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.55 / Unit
View Datasheet →PIC18F45Q10T-I/MP
✅ Drop-In✓ In Stock
$1.88 / Unit
View Datasheet →PIC18LF45K80T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit Harvard, RISC) |
| Family | PIC18F/LF K80 (XLP, ECAN) |
| Maximum CPU Frequency | 64 MHz |
| Performance | 16 MIPS |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data SRAM | 4 KB |
| EEPROM | 1 KB |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| ADC | 12-bit, up to 11 channels |
| CTMU Module | Yes (Charge Time Measurement Unit) |
| ECAN Module | Yes (CAN 2.0B active) |
| I/O Pins | 36 |
| Package | QFN-44 (ML) 8x8 mm |
| Operating Temperature | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount |
PIC18LF45K80T-I/ML Pin Configuration
| Pin 1 | RA0/AN0 — Port A bit 0 / ADC input 0 |
| Pin 2 | RA1/AN1 — Port A bit 1 / ADC input 1 |
| Pin 3 | RA2/AN2 — Port A bit 2 / ADC input 2 |
| Pin 4 | RA3/AN3 — Port A bit 3 / ADC input 3 |
| Pin 5 | RA4/AN4 — Port A bit 4 / ADC input 4 |
| Pin 6 | RA5/AN5 — Port A bit 5 / ADC input 5 |
| Pin 7 | RA6/OSC2 — Port A bit 6 / oscillator output |
| Pin 8 | RA7/OSC1 — Port A bit 7 / oscillator input |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply (1.8V-3.6V) |
| Pin 11 | RB0/INT0 — Port B bit 0 / external interrupt 0 |
| Pin 12 | RB1/INT1 — Port B bit 1 / external interrupt 1 |
| Pin 13 | RB2/INT2 — Port B bit 2 / external interrupt 2 |
| Pin 14 | RB3/INT3 — Port B bit 3 / external interrupt 3 |
| Pin 15 | RB4 — Port B bit 4 |
| Pin 16 | RB5 — Port B bit 5 |
| Pin 17 | RB6/PGC — Port B bit 6 / ICSP clock |
| Pin 18 | RB7/PGD — Port B bit 7 / ICSP data |
| Pin 19 | RC0 — Port C bit 0 |
| Pin 20 | RC1 — Port C bit 1 |
| Pin 21 | RC2 — Port C bit 2 |
| Pin 22 | RC3 — Port C bit 3 |
| Pin 23 | RC4 — Port C bit 4 |
| Pin 24 | RC5 — Port C bit 5 |
| Pin 25 | RC6/CANTX — Port C bit 6 / ECAN transmit |
| Pin 26 | RC7/CANRX — Port C bit 7 / ECAN receive |
| Pin 27 | RD0 — Port D bit 0 |
| Pin 28 | RD1 — Port D bit 1 |
| Pin 29 | RD2 — Port D bit 2 |
| Pin 30 | RD3 — Port D bit 3 |
| Pin 31 | RD4 — Port D bit 4 |
| Pin 32 | RD5 — Port D bit 5 |
| Pin 33 | RD6 — Port D bit 6 |
| Pin 34 | RD7 — Port D bit 7 |
| Pin 35 | RE0 — Port E bit 0 |
| Pin 36 | RE1 — Port E bit 1 |
| Pin 37 | RE2 — Port E bit 2 |
| Pin 38 | RE3 — Port E bit 3 |
| Pin 39 | AVDD — Analog positive supply |
| Pin 40 | AVSS — Analog ground reference |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | EP — Exposed thermal pad - connect to VSS |
Typical Applications
PIC18LF45K80T-I/ML is suitable for 6 applications: Automotive Body and Chassis ECU, Industrial CAN-Connected Sensor Node, Low-Power Remote Sensor Hub, Capacitive Touch HMI Front Panel, Building Automation Controller, Portable Battery-Powered Instrument.
Automotive Body and Chassis ECU
The PIC18LF45K80T-I/ML's integrated ECAN module compliant with CAN 2.0B is the defining fit for automotive body and chassis ECUs such as seat controllers, mirror modules, and door-handle sensors. With 32 KB of Flash and 4 KB of SRAM the device runs a typical LIN/CAN stack plus diagnostics without external memory. The QFN-44 (ML) 8x8 mm footprint enables compact under-dash modules where PCB area is at a premium. The 1.8-3.6 V LF supply range aligns with 3.3 V regulated rails common in body electronics, and XLP sleep currents below 1 µA support wake-on-CAN designs that preserve battery life during vehicle storage.
Recommended
Industrial CAN-Connected Sensor Node
Industrial sensor nodes using CANopen or DeviceNet benefit from the PIC18LF45K80T-I/ML's hardware acceptance filters and 11-channel 12-bit ADC, which directly digitize bridge, RTD, or 4-20 mA-derived voltages without an external ADC. The 16 MIPS core handles CAN stack processing alongside sampling at update rates up to 100 Hz. The QFN-44 package gives 36 GPIO, freeing pins for digital I/O expansion or local HMI. The nanoWatt XLP sleep modes drop quiescent current into the sub-1 µA range, allowing two-wire industrial sensors to be powered from the bus with strict energy budgets.
Recommended
Low-Power Remote Sensor Hub
For remote battery-powered sensor hubs reporting over CAN, LIN, or UART, the PIC18LF45K80T-I/ML's nanoWatt XLP technology provides the standby efficiency needed for multi-year deployments. The CTMU enables time-of-flight or thermistor-style measurements with high precision using the on-chip 12-bit ADC, eliminating an analog front-end IC. With 32 KB Flash the firmware can support secure wake schedules, OTA-style bootloader updates, and edge filtering algorithms. The 1.8 V minimum supply allows direct operation from a single lithium primary cell, simplifying the power tree.
Recommended
Capacitive Touch HMI Front Panel
The PIC18LF45K80T-I/ML's integrated CTMU paired with the 12-bit ADC delivers mTouch capacitive sensing for buttons, sliders, and proximity sensors without an external touch controller. With up to 11 ADC channels and 36 GPIO, the MCU can drive both touch electrodes and panel LEDs from a single chip. The QFN-44 (ML) 8x8 mm package fits slim bezel designs where every millimeter of PCB height matters, such as white-goods front panels and access-control keypads. Industrial -40 °C to +85 °C operation supports unheated outdoor enclosures.
Recommended
Building Automation Controller
Building automation systems using CAN, LIN, or RS-485 backbones benefit from the PIC18LF45K80T-I/ML's mix of ECAN, UART, and I2C peripherals for multi-protocol bridging in HVAC, lighting, and access-control panels. The 32 KB Flash accommodates BACnet or proprietary automation stacks plus logging buffers. The LF variant's 1.8 V minimum supply lets the MCU share a 3.3 V rail with sensors and EEPROM, while XLP sleep modes keep idle zone controllers drawing under 1 µA. The QFN-44 footprint supports compact DIN-rail module layouts.
Recommended
Portable Battery-Powered Instrument
Portable instruments such as handheld multimeters, environmental loggers, and field test equipment benefit from the PIC18LF45K80T-I/ML's combination of low supply voltage (down to 1.8 V), 12-bit ADC for accurate measurements, and XLP sleep for long battery life. The 4 KB SRAM is sufficient to buffer sensor logs before batch transmission over UART or CAN. The QFN-44 (ML) 8x8 mm package allows the MCU to fit beneath an LCD module or alongside a coin-cell holder. The CTMU simplifies precision timing measurements for ultrasonic or resistive sensing.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF45K80T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F45K80T-I/ML | PIC18LF45K40T-I/ML | PIC18LF45K50-I/P | PIC18F45Q10T-I/MP |
|---|---|---|---|---|---|
| Package | QFN-44 (ML) 8x8 mm | QFN-44 (ML) 8x8 mm - same | QFN-44 (ML) 8x8 mm - same | QFN-44 (ML) 8x8 mm - same | QFN-44 (ML) 8x8 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Family | PIC18 K80 (XLP, ECAN) | PIC18 K80 (XLP, ECAN) | PIC18 K40 (no ECAN) | PIC18 K50 (no ECAN) | PIC18 Q10 (no ECAN) |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Program Flash | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| SRAM | 4 KB | 4 KB | 2 KB | 2 KB | 2 KB |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 1.8 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 5.5 V (F) |
| ECAN Module | Yes (CAN 2.0B) | Yes (CAN 2.0B) | No | No | No |
| ADC Resolution | 12-bit, 11 ch | 12-bit, 11 ch | 10-bit | 10-bit | 10-bit |
Key Differentiators
- Integrated hardware ECAN module (vs PIC18LF45K40T-I/ML)
- 12-bit ADC vs 10-bit on K40/K50 family (vs PIC18LF45K40T-I/ML)
- CTMU capacitive touch without external controller (vs PIC18LF45K50-I/P)
Design Notes
Place a 100 nF decoupling capacitor as close as physically possible to every VDD pin and a single 10 µF bulk capacitor at the supply entry point of the QFN-44 (ML) footprint. The LF variant draws sub-1 µA in deep-sleep but can spike to tens of milliamps during ECAN transmission; without proper decoupling these transients can corrupt ADC readings and trigger spurious interrupts on adjacent analog lines.
ECAN TX (RC6) and RX (RC7) pins must be configured as digital inputs after reset, not analog, otherwise the CAN peripheral will fail to initialize. The CTMU requires the ADC to be enabled and configured for the corresponding channel before any capacitive-touch conversions will produce meaningful values; consult the family reference manual section on CTMU setup to avoid silent-touch dead zones.
The QFN-44 (ML) exposed thermal pad (EP, pin 44) must be soldered to a properly sized copper pour on the PCB and connected to VSS to meet the datasheet thermal resistance. Estimated: with a 1 sq. inch EP copper pour on a 1 oz 4-layer board, theta_JA is in the 30-40 C/W range; without the EP soldered, junction temperature can exceed 100 °C even at moderate 30 mA loads, causing thermal shutdown in enclosed enclosures.
Route the ECAN differential pair (RC6/RC7 to external transceiver) as a 120 Ω characteristic-impedance matched pair, keeping stubs under 5 mm and avoiding right-angle bends. The QFN-44 has fine-pitch pads; use a non-solder-mask-defined (NSMD) land pattern with 0.2 mm solder-mask expansion to improve assembly yield and reduce tombstoning risk on small passives placed nearby.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial -40C to +85C temperature grade. Not AEC-Q100 qualified for automotive; consider PIC18F45K80T-I/ML or PIC18F46K80 variants for AEC-Q100 applications per the Microchip automotive portfolio.
