PIC18LF46K80-I/ML - 8-bit 64MHz 64KB Flash MCU w/ ECAN | Microchip
MPN: PIC18LF46K80-I/ML ✓ Hoạt độngPIC18LF46K80-I/ML Tóm tắt
An 8-bit PIC microcontroller is a Harvard-architecture CMOS device that executes one instruction per clock cycle (except branches) using a reduced instruction set. PIC18 devices sit at the top of Microchip's 8-bit portfolio, offering 16-bit wide instructions, up to 64 KB of linear-addressable Flash, and rich peripheral integration. They occupy the hypernym hierarchy: microcontroller -> MCU -> embedded microcontroller -> 8-bit MCU -> PIC18 family -> ECAN-enabled PIC18 sub-family, and are widely used as deterministic, low-cost system controllers in industrial, automotive body, and consumer products.
Key features of the PIC18LF46K80 include hardware ECAN 2.0B with full CAN 2.0B active compliance, an 11-channel 12-bit A/D converter with acquisition timer, 5 PWM modules with dead-band control, two enhanced USARTs supporting RS-485 and LIN master, and a master SSP supporting SPI and I2C (master/slave). The device is rated for -40 C to +85 C industrial operation and supports nanoWatt XLP modes with sleep currents below 100 nA typical, enabling battery-backed or energy-harvested designs.
The LF (low-voltage) silicon is optimized for 1.8 V-3.6 V operation, which trades absolute speed and analog headroom for dramatically lower power than the 5 V PIC18F46K80 counterpart. Designers moving between the two must verify analog supply and I/O voltage compatibility, since the LF variant cannot directly interface 5 V peripherals without level shifters. The integrated ECAN, 12-bit ADC, and 5 PWM channels make this part a single-chip solution for sensor-rich nodes and small motor-control loops.
Typical applications include automotive body modules and CAN nodes (HVAC, lighting, seat controllers), industrial sensor hubs with ECAN backbone, building automation (BACnet over CAN, elevator controllers), low-power remote sensor nodes with CAN connectivity, and LIN-to-CAN gateway bridges. The combination of nanoWatt XLP sleep modes and integrated ECAN makes it particularly attractive for always-on, bus-powered nodes that must wake on CAN traffic and process interrupts while drawing microamp-level quiescent current.
Design considerations include providing a stable 1.8 V-3.6 V rail (decoupling 100 nF + bulk cap adjacent to the QFN thermal pad), connecting the exposed pad to ground for thermal dissipation, and configuring the MCLR pin for proper in-circuit serial programming (ICSP). For high-CAN-bus loads, add a TVS diode and proper bus bias network to meet ISO 11898 ESD/EMC requirements.
This page synthesizes distributor pricing from DigiKey/Mouser, drop-in same-family alternatives from the PIC18F46K80 / PIC18LF45K80 / PIC18LF46K40 family, and practical design notes not consolidated in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF46K80-I/ML — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18LF46K80-I/ML (cùng hình factor và footprint) — khác nhau ở ADC, Package, Operating Temperature, Core Architecture, Data EEPROM.
PIC18F46K80-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF45K80-I/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF46K40-I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF45K40-I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF46K80-I/ML Tỷ lệ tối đa & tính chất điện
| Core | PIC18, 8-bit RISC |
| Tần số xung maksimum | 64 MHz (16 MIPS) |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 3648 B (3.56 KB) |
| Data EEPROM | 1024 B (1 KB) |
| Operating Voltage | 1.8 V to 3.6 V (LF family) |
| I/O Pins | 36 |
| ADC | 11 channels x 12-bit |
| PWM Channels | 5 |
| CAN | 1 x ECAN 2.0B active |
| UART/USART | 2 x EUSART |
| SPI / I2C | MSSP (SPI + I2C master/slave) |
| Hộp | 44-pin QFN (8x8 mm), exposed pad |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Kiểu lắp đặt | Surface Mount (SMD/SMT) |
| RoHS | Compliant |
| Low-Power Technology | nanoWatt XLP |
| Instruction Set | 16-bit PIC18 instruction word (Harvard) |
| Bề rộng đường dữ liệu | 8-bit |
Cấu hình chân PIC18LF46K80-I/ML
| Chân 1 | RB5/AN11/RX2/DT2 — Port B bit 5 / analog input 11 / EUSART2 RX |
| Chân 2 | RB4/AN10/TX2/CK2 — Port B bit 4 / analog input 10 / EUSART2 TX |
| Chân 3 | RB3/AN9/CTED1/CCP2 — Port B bit 3 / analog input 9 / CTMU / CCP2 |
| Chân 4 | RB2/AN8/CCP1 — Port B bit 2 / analog input 8 / CCP1 PWM |
| Chân 5 | RB1/AN7/RX1/DT1/INT1 — Port B bit 1 / analog input 7 / EUSART1 RX |
| Chân 6 | RB0/AN6/TX1/CK1/INT0/FLT0 — Port B bit 0 / analog input 6 / EUSART1 TX |
| Chân 7 | VSS — Ground reference |
| Chân 8 | VDD — Positive supply (1.8 V-3.6 V) |
| Chân 9 | RA7/OSC1/CLKI — Port A bit 7 / oscillator input |
| Chân 10 | RA6/OSC2/CLKO — Port A bit 6 / oscillator output |
| Chân 11 | RC0/SOSCO — Port C bit 0 / secondary oscillator output |
| Chân 12 | RC1/SOSCI — Port C bit 1 / secondary oscillator input |
| Chân 13 | RC2/AN12/CCP2 — Port C bit 2 / analog input 12 / CCP2 |
| Chân 14 | RC3/AN13/SEG11/SCL — Port C bit 3 / analog input 13 / MSSP I2C clock |
| Chân 15 | RC4/AN14/SEG10/SDA — Port C bit 4 / analog input 14 / MSSP I2C data |
| Chân 16 | RC5/AN15/SEG9 — Port C bit 5 / analog input 15 |
| Chân 17 | RC6/AN16/SEG8/TX1/CK1 — Port C bit 6 / analog input 16 / EUSART1 TX |
| Chân 18 | RC7/AN17/SEG7/RX1/DT1 — Port C bit 7 / analog input 17 / EUSART1 RX |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply (1.8 V-3.6 V) |
| Chân 21 | RD0/PMD0 — Port D bit 0 / parallel master data 0 |
| Chân 22 | RD1/PMD1 — Port D bit 1 / parallel master data 1 |
| Chân 23 | RD2/PMD2 — Port D bit 2 / parallel master data 2 |
| Chân 24 | RD3/PMD3 — Port D bit 3 / parallel master data 3 |
| Chân 25 | RD4/PMD4/SDO2 — Port D bit 4 / SPI2 data out |
| Chân 26 | RD5/PMD5/SDI2 — Port D bit 5 / SPI2 data in |
| Chân 27 | RD6/PMD6/SCK2 — Port D bit 6 / SPI2 clock |
| Chân 28 | RD7/PMD7/SS2 — Port D bit 7 / SPI2 slave select |
| Chân 29 | VSS — Ground reference |
| Chân 30 | VDD — Positive supply (1.8 V-3.6 V) |
| Chân 31 | RE0/AN18/PMA2 — Port E bit 0 / analog input 18 / parallel master address 2 |
| Chân 32 | RE1/AN19/PMA3 — Port E bit 1 / analog input 19 / parallel master address 3 |
| Chân 33 | RE2/AN20/PMA4 — Port E bit 2 / analog input 20 / parallel master address 4 |
| Chân 34 | RE3/PMA5 — Port E bit 3 / parallel master address 5 |
| Chân 35 | RA0/AN0/C1INA/ULPWU — Port A bit 0 / analog input 0 / comparator input / ultra-low-power wake-up |
| Chân 36 | RA1/AN1/C1INB — Port A bit 1 / analog input 1 / comparator input |
| Chân 37 | RA2/AN2/VREF-/CVREF — Port A bit 2 / analog input 2 / ADC VREF- |
| Chân 38 | RA3/AN3/VREF+/C1OUT — Port A bit 3 / analog input 3 / ADC VREF+ / comparator output |
| Chân 39 | RA4/T0CKI/C2OUT — Port A bit 4 / Timer0 clock / comparator 2 output |
| Chân 40 | RA5/AN4/C2INB/HLVDIN — Port A bit 5 / analog input 4 / high/low-voltage detect |
| Chân 41 | MCLR — Master clear reset (active low) |
| Chân 42 | CANTX — ECAN transmit output |
| Chân 43 | CANRX — ECAN receive input |
| Chân 44 | RB7/AN5/KBI1 — Port B bit 7 / analog input 5 / KBI interrupt |
Ứng dụng tiêu biểu
PIC18LF46K80-I/ML phù hợp cho 6 Áp dụngs: Automotive CAN Body Module, Industrial CAN Sensor Hub, Building Automation Controller, Low-Power CAN Remote Sensor Node, LIN-to-CAN Gateway Bridge, Small BLDC / DC Motor Controller.
Automotive CAN Body Module
The PIC18LF46K80-I/ML is well suited to automotive body controllers (HVAC, lighting, seat modules) thanks to its hardware ECAN 2.0B peripheral, 11-channel 12-bit ADC for analog sensor reading, and 5 PWM channels for LED dimming or motor speed control. Operating from a 3.3 V LDO fed by the 12 V bus, the LF variant draws nanoWatt XLP sleep current below 100 nA typical, allowing always-on CAN wake-up from a battery-backed supply. The 44-QFN package exposes 36 I/O - more than enough for body modules driving multiple loads while communicating on the vehicle CAN bus.
Được đề xuất
Industrial CAN Sensor Hub
Industrial sensor hubs aggregating analog and digital field data over CAN benefit from the PIC18LF46K80-I/ML's 12-bit ADC, dual EUSART (LIN + RS-485), and 64 KB Flash. A single MCU can read 11 analog channels, run CANopen or proprietary ECAN stack, and locally pre-process measurements before forwarding to a PLC master. The 16 MIPS throughput handles deterministic CAN traffic at 1 Mbit/s while servicing ADC conversions and PWM actuator loops in parallel.
Được đề xuất
Building Automation Controller
Building automation subsystems such as HVAC dampers, lighting controllers, and elevator I/O boards benefit from the PIC18LF46K80-I/ML's ECAN and EUSART connectivity for BACnet-over-CAN or proprietary fieldbus protocols. The 5 PWM channels drive BLDC or stepper actuators in damper and blind motors, while 36 I/O handle digital key switches and triac-fired lighting. The 1.8 V-3.6 V LF range supports low-voltage distribution panels common in modern buildings.
Được đề xuất
Low-Power CAN Remote Sensor Node
Remote sensor nodes powered by battery or energy harvesting use the PIC18LF46K80-I/ML's nanoWatt XLP sleep modes to achieve quiescent currents under 100 nA typical. The integrated ECAN allows the node to wake on a CAN remote frame, take a sensor reading, and transmit without an external controller. With 64 KB of Flash and 3648 B RAM, the device can host a complete CANopen or DeviceNet stack alongside application firmware.
Được đề xuất
LIN-to-CAN Gateway Bridge
A LIN-to-CAN gateway uses the PIC18LF46K80-I/ML's dual EUSART (one for LIN master, one for diagnostic RS-232) plus ECAN to translate between sub-networks. LIN master mode handles up to 16 slaves on a single bus, while ECAN forwards aggregated data to the higher-speed vehicle or industrial backbone. The 64 KB Flash accommodates both LIN and CAN protocol stacks plus a translation table.
Được đề xuất
Small BLDC / DC Motor Controller
The PIC18LF46K80-I/ML's 5 PWM outputs with dead-band control and 11 ADC channels enable sensorless or hall-sensor-based control of small BLDC and brushed DC motors in fans, pumps, and small appliances. The 16 MIPS core can run a 20 kHz PWM loop with field-oriented control firmware in C, while ECAN provides networked speed command and telemetry. The 44-QFN exposed pad gives sufficient thermal dissipation for motors up to roughly 50 W.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF46K80-I/ML — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F46K80-I/ML | PIC18LF45K80-I/ML | PIC18LF46K40-I/ML | PIC18LF45K40-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin QFN (8x8 mm) | 44-pin QFN (8x8 mm) - same | 44-pin QFN (8x8 mm) - same | 44-pin QFN (8x8 mm) - same | 44-pin QFN (8x8 mm) - same |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 5.5 V (wider) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Flash Memory | 64 KB | 64 KB | 32 KB (-50%) | 64 KB | 32 KB (-50%) |
| ADC | 11 x 12-bit | 11 x 12-bit | 11 x 12-bit | Different CIP ADC count | Different CIP ADC count |
| ECAN | Yes (2.0B active) | Yes (2.0B active) | Yes (2.0B active) | Yes (MCP2518FD compatible) | Yes (MCP2518FD compatible) |
| Architecture | Classic PIC18 | Classic PIC18 | Classic PIC18 | CIP (Core Independent Peripherals) | CIP (Core Independent Peripherals) |
| Unit Price (qty 1000) | $4.31 | Similar (~$4.30) | Lower (~5-10%) | Lower (newer family) | Lowest |
Bảo phân biệt quan trọng
- Lower VDD range than F variant for battery and 3.3 V systems (vsPIC18F46K80-I/ML)
- Same-family fallback with 50% less Flash at lower cost (vsPIC18LF45K80-I/ML)
- Modern CIP migration path with same footprint (vsPIC18LF46K40-I/ML)
Ghi chú thiết kế
The LF variant operates from 1.8 V to 3.6 V; ensure the LDO has at least 100 mV headroom above 3.6 V to ride through load transients. Add a 100 nF X7R bypass capacitor within 2 mm of each VDD pin and a 10 uF bulk capacitor on the supply rail. For nanoWatt XLP sleep currents below 1 uA, disable the ADC, peripherals, and unused oscillator sources in firmware before issuing the SLEEP instruction.
The 44-pin QFN package has an exposed thermal pad on the underside that MUST be soldered to a ground plane. Estimated: at 64 MHz / 3.3 V with all peripherals active, ICC is approximately 15 mA, dissipating ~50 mW - well within the QFN's thermal envelope. Stencil aperture for the thermal pad should be split into multiple openings (~50% coverage) to prevent solder balling and ensure reliable void-free soldering.
Route the ECAN CANTX/CANRX differential pair with 100 ohm differential impedance, 13-15 mm length matching, and ground fill on either side per ISO 11898. Keep the CAN bus traces away from switching noise sources (PWM outputs, clock traces). Place the MCP2561/MCP2562 transceiver adjacent to the CAN bus connector, not adjacent to the MCU, to minimize bus stub length and improve ESD performance.
Do not assume the LF and F K80 silicon are identical at 3.3 V - read the errata sheet for any peripheral behavior differences. The MCLR pin requires a 10 kohm pull-up to VDD for normal operation; leaving it floating will cause spurious resets. For ICSP programming, the PGC/PGD pins must not be loaded down with more than 50 pF of capacitance or the programmer may fail to communicate.
Thông tin tuân thủ
RoHS compliant per Microchip product page and DigiKey listing. The -I suffix denotes industrial temperature grade (-40 C to +85 C), not AEC-Q100 automotive. For AEC-Q100 parts in this family, look for the -E suffix variants in Microchip's automotive catalog.
