PIC18LF4610-I/ML - 8-Bit MCU 64KB Flash 40MHz QFN-44 | Microchip
MPN： PIC18LF4610-I/ML ✓ 啟用中PIC18LF4610-I/ML 概覽
A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable I/O peripherals. The PIC18F family is Microchip's high-performance 8-bit architecture with a 16-bit instruction word, a hardware multiplier, a paged memory model and interrupt priority levels, positioned between the baseline PIC10/12/16 families and the 16-bit dsPIC/PIC24 families. MCUs sit inside the broader category of embedded computing, sharing the hierarchy MCU -> microcontroller -> embedded processor -> semiconductor. They are the central decision-making element in nearly every embedded product, executing firmware that reads sensors, drives actuators and manages communications.
Key features of the PIC18LF4610 include 36 digital I/O pins arranged across multiple ports, a 10-bit ADC with up to 13 channels and auto-acquisition, two analog comparators, two CCP (Capture/Compare/PWM) modules, one Enhanced CCP module, an 8-bit/16-bit Timer0 with programmable prescaler, three additional 16-bit timers, a hardware USART with LIN support, MSSP (SPI/I2C) and a Parallel Slave Port. The device includes an ICD (In-Circuit Debugger) interface for MPLAB development tools. nanoWatt Technology provides multiple idle, sleep and run modes with current consumption down to microampere levels, making the part suitable for battery-powered systems.
Architecturally, the PIC18LF4610 uses a 16-bit instruction word with an 8-bit data path and a modified Harvard bus, a 31-level deep hardware stack, and a hardware 8x8 multiply. The integrated low-voltage detect (LVD) circuit and brown-out reset (BOR) provide robust supply supervision, while the LF variant extends the supply range down to 2.0V for 2-cell battery operation. The QFN-44 exposed pad improves thermal dissipation and provides a low-inductance ground connection.
Typical applications include industrial control panels, building automation nodes, motor control subsystems, smart sensor hubs, low-power data loggers, and battery-backed instrument clusters. The wide 2.0V-5.5V supply range also supports portable medical devices and remote sensor nodes where energy harvesting or coin-cell operation is desired. When designing with this device, plan the analog reference voltage (AVdd/AVss) and decoupling network carefully, and use MPLAB X IDE with the XC8 compiler for full hardware utilization including the ICD interface.
直接替換替代品，適用於 PIC18LF4610-I/ML — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC18LF4610-I/ML （相同外形與佔位） — 差異在於 Package, Timers, ADC, Program Memory (Flash), Core Architecture.
PIC18LF4620-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC18F4610-I/ML
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18LF4620-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F46K22-I/ML
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18LF45K80-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F45K50-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18LF4610-I/ML 最大額定值與電氣特性
| Core Architecture | PIC18 (8-bit, 16-bit instruction word) |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| RAM | 3,968 bytes |
| Maximum CPU Clock | 40 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit, up to 13 channels |
| 封裝 | QFN-44 (8x8 mm) with Exposed Pad |
| 工作溫度 | -40 C to +85 C (Industrial) |
| 安裝類型 | Surface Mount |
| Serial Interfaces | UART, SPI, I2C (MSSP) |
| Timers | Timer0 (8/16-bit), Timer1/2/3 (16-bit) |
| CCP/ECCP Modules | 2 CCP + 1 ECCP |
| Comparators | 2 analog comparators |
| Low-Power Modes | nanoWatt Technology (multiple idle/sleep modes) |
| Programming/Debug | ICSP, ICD via MPLAB |
| RoHS 狀態 | Compliant |
PIC18LF4610-I/ML 腳位配置
| 腳位 1 | RG0 — Port G bit 0 / CCP3 |
| 腳位 2 | RG1 — Port G bit 1 / TX2 (AUX UART) |
| 腳位 3 | RG2 — Port G bit 2 / RX2 (AUX UART) |
| 腳位 4 | RG3 — Port G bit 3 / CCP4 |
| 腳位 5 | RG4 — Port G bit 4 / CCP5 |
| 腳位 6 | MCLR — Master Clear reset input (active low) |
| 腳位 7 | OSC1 — Crystal oscillator input / external clock |
| 腳位 8 | OSC2 — Crystal oscillator output |
| 腳位 9 | RA0 — Port A bit 0 / AN0 |
| 腳位 10 | RA1 — Port A bit 1 / AN1 |
| 腳位 11 | RA2 — Port A bit 2 / AN2 / VREF- |
| 腳位 12 | RA3 — Port A bit 3 / AN3 / VREF+ |
| 腳位 13 | RA4 — Port A bit 4 / T0CKI |
| 腳位 14 | RA5 — Port A bit 5 / AN4 |
| 腳位 15 | RA6 — Port A bit 6 / OSC2 (alternate) |
| 腳位 16 | RA7 — Port A bit 7 / OSC1 (alternate) |
| 腳位 17 | VSS — Ground reference |
| 腳位 18 | VDD — Positive supply voltage (2.0V-5.5V) |
| 腳位 19 | RB0 — Port B bit 0 / INT0 |
| 腳位 20 | RB1 — Port B bit 1 / INT1 |
| 腳位 21 | RB2 — Port B bit 2 / INT2 |
| 腳位 22 | RB3 — Port B bit 3 / CCP2 |
| 腳位 23 | RB4 — Port B bit 4 |
| 腳位 24 | RB5 — Port B bit 5 / PGM |
| 腳位 25 | RB6 — Port B bit 6 / PGC (ICD clock) |
| 腳位 26 | RB7 — Port B bit 7 / PGD (ICD data) |
| 腳位 27 | RC0 — Port C bit 0 / T1OSO / T13CKI |
| 腳位 28 | RC1 — Port C bit 1 / T1OSI |
| 腳位 29 | RC2 — Port C bit 2 / CCP1 |
| 腳位 30 | RC3 — Port C bit 3 / SCL |
| 腳位 31 | RC4 — Port C bit 4 / SDI / SDA |
| 腳位 32 | RC5 — Port C bit 5 / SDO |
| 腳位 33 | RC6 — Port C bit 6 / TX1 |
| 腳位 34 | RC7 — Port C bit 7 / RX1 |
| 腳位 35 | RD0 — Port D bit 0 / PSP0 |
| 腳位 36 | RD1 — Port D bit 1 / PSP1 |
| 腳位 37 | RD2 — Port D bit 2 / PSP2 |
| 腳位 38 | RD3 — Port D bit 3 / PSP3 |
| 腳位 39 | RD4 — Port D bit 4 / PSP4 |
| 腳位 40 | RD5 — Port D bit 5 / PSP5 / P1A |
| 腳位 41 | RD6 — Port D bit 6 / PSP6 / P1B |
| 腳位 42 | RD7 — Port D bit 7 / PSP7 / P1C |
| 腳位 43 | RE0 — Port E bit 0 / AN5 / RD |
| 腳位 44 | RE1 — Port E bit 1 / AN6 / WR |
| 腳位 45 | RE2 — Port E bit 2 / AN7 / CS |
| 腳位 46 | AVDD — Analog positive supply |
| 腳位 47 | AVSS — Analog ground reference |
| 腳位 EP | EP — Exposed thermal pad - connect to VSS |
典型應用
PIC18LF4610-I/ML 適用於 7 應用s: Industrial Control Panel, Smart Sensor Hub, Battery-Backed Data Logger, HVAC Control Board, Motor Control Subsystem, Portable Medical Device, Automotive Body Control Module.
Industrial Control Panel
The PIC18LF4610-I/ML fits industrial control panels where its 40 MHz CPU, 36 I/O and 64 KB Flash handle keypad scanning, LCD driving and Modbus RTU over UART. Its 2.0V-5.5V range lets the same design run from 24V->5V or 3.3V rails, and the -40C to +85C industrial grade tolerates factory-floor temperatures. The integrated 10-bit ADC reads potentiometers and 4-20 mA loop signals after external scaling. Compared with newer PIC18F-K series, the LF4610 keeps BOM cost down for proven legacy firmware.
推薦
Smart Sensor Hub
For multi-sensor IoT edge nodes, the PIC18LF4610-I/ML aggregates readings from SPI temperature, I2C humidity and UART CO2 sensors while running calibration and averaging in firmware. The 3,968 bytes SRAM buffer raw data before transmission, and nanoWatt sleep modes drop quiescent current to microamp levels for battery operation. The 10-bit ADC with up to 13 channels supports direct connection to analog sensors (light, gas, strain gauge bridges). Engineers typically pair the LF4610 with an MCP9808 temperature sensor and an RN4870 BLE module.
推薦
Battery-Backed Data Logger
The PIC18LF4610-I/ML excels in battery-backed data loggers that record sensor data to external EEPROM or SD card via SPI. The 2.0V-5.5V VDD range supports two-cell alkaline or lithium primary cells, and the nanoWatt sleep currents extend battery life to multi-year deployments. The hardware UART interfaces with GPS modules for time-stamped remote logging, while the 10-bit ADC samples battery voltage for fuel gauging. Brown-out reset and low-voltage detect protect against data corruption during cell end-of-life.
推薦
HVAC Control Board
Building automation and HVAC systems use the PIC18LF4610-I/ML for thermostatic control, fan-speed PWM and damper actuator drive. The ECCP module generates the high-resolution PWM waveform needed for brushless DC fan control, while the analog comparators monitor over-current faults without CPU intervention. The wide 2.0-5.5V supply simplifies integration with 24 VAC HVAC transformers rectified to 5V DC. The 36 I/O easily handles multiple temperature sensors, relay outputs and triac-fired heater stages.
推薦
Motor Control Subsystem
Stepper and small BLDC motor control leverages the PIC18LF4610-I/ML's ECCP module for center-aligned PWM, 16-bit timers for velocity measurement, and QEI (Quadrature Encoder Interface) capability for closed-loop positioning. The 40 MIPS throughput executes field-oriented control (FOC) loops on small three-phase motors under 100 W. Hardware comparators provide cycle-by-cycle current limiting for protection. The QFN-44 exposed pad keeps the die temperature low during high-current switching.
推薦
Portable Medical Device
Battery-powered portable medical devices such as glucose meters, pulse oximeters and handheld diagnostic probes benefit from the PIC18LF4610-I/ML's nanoWatt low-power modes, 2.0-5.5V supply flexibility and 10-bit ADC for sensor readout. The 40 MHz CPU handles waveform analysis, display driving and USB-CDC communication to a host PC. The industrial temperature grade accommodates refrigerated diagnostic environments. Medical device designers must validate all firmware against IEC 62304 and verify electromagnetic compatibility per IEC 60601-1.
推薦
Automotive Body Control Module
While not AEC-Q100 qualified, the PIC18LF4610-I/ML is commonly used in non-safety automotive body control applications such as interior lighting, mirror adjustment and seat-position memory. The wide 2.0-5.5V supply tolerates 12V battery transients after regulation, the 10-bit ADC reads switch and rheostat positions, and the ECCP drives LED dimming via PWM. The PIC18F4610 family shares its heritage with the PIC18F4685 CAN-enabled variant, allowing easy migration when CAN bus connectivity is required.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18LF4610-I/ML — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC18LF4620-I/ML | PIC18F4610-I/ML | PIC18F46K22-I/ML | PIC18LF45K80-I/PT | PIC18F45K50-I/PT |
|---|---|---|---|---|---|---|
| Package | QFN-44 (ML) 8x8 mm | QFN-44 (ML) - same | QFN-44 (ML) - same | QFN-44 (ML) - same | TQFP-44 (PT) - different | TQFP-44 (PT) - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB | 32 KB |
| RAM | 3,968 bytes | 3,968 bytes | 3,968 bytes | 3,896 bytes | 2,048 bytes | 2,048 bytes |
| Operating Voltage | 2.0V - 5.5V | 2.0V - 5.5V | 4.2V - 5.5V | 2.3V - 5.5V | 1.8V - 5.5V | 2.3V - 5.5V |
| Maximum Clock | 40 MHz | 40 MHz | 40 MHz | 64 MHz | 64 MHz | 48 MHz |
| I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 |
| ADC | 10-bit, 13 channels | 10-bit, 13 channels | 10-bit, 13 channels | 10-bit, 28 channels | 12-bit, 11 channels | 10-bit, 25 channels |
| Special Peripherals | ECCP, MSSP, USART, no PPS | ECCP, MSSP, USART, no PPS | ECCP, MSSP, USART, no PPS | PPS, CWG, DSM, 4 ECCP | CAN, PPS, 12-bit ADC | USB 2.0 FS, PPS, CWG |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
主要差異化特點
- 64 KB Flash in QFN-44 with 2.0V-5.5V wide VDD (對比PIC18F46K22-I/ML)
- Industrial -40C to +85C grade with 36 I/O and 3,968 byte RAM (對比PIC18LF45K50-I/PT)
- Mature MPLAB X + XC8 compiler support (對比Cross-vendor MCUs (STM32, NXP LPC))
設計說明
Decouple VDD/VSS and AVDD/AVSS with separate networks: 100 nF ceramic as close as possible to each pin pair, plus a 10 uF bulk capacitor on the main VDD rail. For the 10-bit ADC, add a ferrite bead between VDD and AVDD to isolate analog supply noise. The 2.0V-5.5V range allows direct operation from a 3.3V regulator without LDO cascading.
The QFN-44 (ML) package has an exposed thermal pad that MUST be soldered to a ground pour for proper thermal dissipation. Without the EP soldered, theta_JA rises from approximately 35 C/W to over 70 C/W and the die can overheat at full 40 MHz CPU load with all peripherals active. Use at least 4 thermal vias in the EP land pattern to a continuous ground plane on an inner PCB layer.
Place the 40 MHz crystal (or resonator) within 5 mm of OSC1/OSC2 and guard the traces with a ground ring to reduce EMI pickup. Use Microchip's recommended MPLAB ICD3 or ICD4 connection on RB6/RB7 (PGC/PGD) for in-circuit debugging; route these traces away from high-frequency switching nodes. Keep analog traces (AN0-AN7) short and surrounded by ground pour for best ADC noise performance.
Do not confuse the LF (2.0-5.5V) variant with the F (4.2-5.5V only) variant; PIC18F4610-I/ML is a drop-in replacement only when VDD stays above 4.2V. Always configure the configuration bits (CONFIG1H-5L) for the correct oscillator mode and WDT/brown-out settings before code execution - undefined CONFIG bits can lock the MCU. Use ICSP for programming in-circuit rather than socket-based parallel programming.
The 10-bit ADC achieves best performance when the source impedance is below 5 kohm; add an op-amp buffer (e.g., MCP6002) if your sensor signal cannot drive this. Use the AVDD/AVSS analog supply pins exclusively for ADC reference, not as general digital power. The voltage reference VREF+ pin allows ratiometric measurements independent of VDD drift.
合規資訊
RoHS and REACH compliant per Microchip product declaration. The LF4610 family is NOT AEC-Q100 qualified; for automotive applications use the PIC18F4685/CAN variants or PIC18F-K AEC-Q100 grade parts. Lead-free matte-tin finish suitable for lead-free reflow profiles up to 260 C peak.
