PIC18LF46K22T-I/MV - 8-Bit 64MHz 64KB Flash MCU | Microchip
料号： PIC18LF46K22T-I/MV ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.85 | $5.85 |
| 10 | $5.27 | $52.70 |
| 100 | $4.68 | $468.00 |
| 500 | $4.22 | $2,110.00 |
| 1,000 | $3.79 | $3,790.00 |
PIC18LF46K22T-I/MV 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and I/O peripherals. The PIC18 K-series belongs to Microchip's nanoWatt XLP product line, an umbrella of ultra-low-power 8-bit MCUs that extend battery life through deep sleep modes drawing under 50 nA. Within the broader taxonomy, the PIC18LF46K22 sits as follows: microcontroller -> embedded controller -> 8-bit MCU -> PIC18 family -> nanoWatt XLP -> PIC18 K-series.
Key features include 64 MHz maximum clock speed with 16 MIPS throughput, 35 digital I/O lines, 28-channel 10-bit ADC, 5 CCP/ECCP modules, 2 USART, 2 SPI, 2 I2C, and CTMU for capacitive touch. The 40-UQFN package with exposed thermal pad keeps board footprint compact at 5x5 mm while providing 35 usable I/O through peripheral pin select flexibility. Memory protection, code protection, and a unique device ID support secure firmware deployment.
Typical applications include battery-powered IoT sensor nodes, e-metering, energy harvesting devices, wearable health monitors, and portable medical instruments where the LF voltage range and nanoWatt XLP sleep modes are decisive. The 64 KB Flash / 3968 B RAM split is well matched to mid-complexity control loops with small TCP/IP or BLE stacks on RTOS or cooperative schedulers.
Design consideration: the exposed pad of the UQFN-40 must be soldered to a grounded copper pour for thermal dissipation and for mechanical reliability; omitting this degrades I/O count and reliability. Always verify the specific voltage range - LF (1.8-3.6V) versus F (2.3-5.5V) - when migrating between the F and LF variants of the same die.
This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for sourcing and replacement decisions on the PIC18LF46K22 family.
直接替换替代料： PIC18LF46K22T-I/MV ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18LF46K22T-I/MV （相同外形与封装尺寸） ——差异在于 Package, ADC, Core Architecture, Data EEPROM, Comparators.
快速对比工具——选择替代料号进行并排对比：
PIC18LF46K22-I/MV
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF46K22-E/MV
✅ 直接替换✓ 有现货
$2.79 / 个
查看数据手册 →PIC18F46K22-I/MV
✅ 直接替换✓ 有现货
$2.1 / 个
查看数据手册 →PIC18LF46K22-I/ML
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.22 / 个
查看数据手册 →PIC18LF45K22T-I/MV
✅ 直接替换✓ 有现货
$2.18 / 个
查看数据手册 →PIC18LF46K22T-I/MV 最大额定值与电气特性
| Core Architecture | PIC18 (8-bit RISC) |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 3968 bytes |
| Data EEPROM | 1024 bytes |
| Maximum CPU Clock | 64 MHz (16 MIPS) |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| Number of I/O Pins | 35 |
| ADC | 10-bit, up to 28 channels |
| 封装 | 40-pin UQFN (5x5 mm) with exposed pad |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (Industrial) |
| Low-Power Technology | nanoWatt XLP |
| CCP / ECCP Modules | 5 (2 CCP + 3 ECCP) |
| Communication Peripherals | 2x USART, 2x SPI, 2x I2C |
| CTMU (Capacitive Touch) | Yes |
| RoHS 状态 | Compliant |
| MSL 等级 | 3 (168 hours) |
PIC18LF46K22T-I/MV 40-pin uqfn (5x5 mm) with exposed pad 引脚配置指南
PIC18LF46K22T-I/MV（40-pin uqfn (5x5 mm) with exposed pad 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： PIC18LF46K22T-I/MV.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PIC18LF46K22T-I/MV 适用于 6 应用s: Battery-Powered IoT Sensor Nodes, Portable Medical and Health Monitors, Smart Energy Metering and Sub-Metering, Industrial Control and Automation, Consumer Appliances and HMI Panels, Automotive Body Electronics (Non-Safety).
Battery-Powered IoT Sensor Nodes
The PIC18LF46K22T-I/MV is well suited to battery-powered IoT sensor nodes because it operates down to 1.8V on a single lithium cell and draws less than 100 nA in deep sleep through Microchip's nanoWatt XLP technology. With 64 KB Flash it can host a small RTOS, a wireless protocol stack fragment, and sensor fusion code without external memory, while the 28-channel 10-bit ADC interfaces directly with analog environmental sensors like temperature, humidity, and gas sensors. The 40-UQFN footprint keeps the node small enough to fit inside standard sensor housings.
推荐
Portable Medical and Health Monitors
Portable medical devices such as glucose meters, pulse oximeters, and wearable health patches benefit from the PIC18LF46K22T-I/MV's wide 1.8V-3.6V supply range, which supports direct operation from a single CR2032 coin cell or single-cell Li-ion battery. The integrated CTMU module enables capacitive touch buttons on the device housing without extra components, and the 35 I/O pins can drive LCD displays, LEDs, and a Bluetooth Low Energy companion module. Compliance with the medical safety standards requires low-leakage firmware, and the device's deep sleep current below 100 nA extends battery life beyond 12 months in typical use cycles.
推荐
Smart Energy Metering and Sub-Metering
Energy meters and sub-metering devices need reliable low-power operation, accurate analog measurement, and tamper-resistant firmware storage, all of which the PIC18LF46K22T-I/MV provides. The 64 KB Flash comfortably fits IEC 62053 metering algorithm code and calibration tables, while the 10-bit ADC with 28 channels measures voltage and current simultaneously through current transformers or shunt resistors. The 5 CCP/ECCP modules generate PWM outputs for calibration signaling and power-line communication. The nanoWalt XLP sleep modes extend battery life in power-outage backup modes to multi-year operation.
推荐
Industrial Control and Automation
Industrial sensor hubs, building automation controllers, and small PLCs benefit from the PIC18LF46K22T-I/MV's 35 I/O lines, dual USART channels for Modbus RTU/ASCII, and dual I2C/SPI interfaces for sensor expansion. The -40C to +85C industrial temperature rating covers outdoor and factory environments, while the 64 MHz clock supports deterministic control loops at sub-millisecond sample rates. The 40-UQFN package's exposed pad enables PCB ground plane connection, improving EMI performance in noisy industrial settings where the device must coexist with motor drives and switching contactors.
推荐
Consumer Appliances and HMI Panels
Consumer appliances such as coffee machines, washing machines, and HMI panels use the PIC18LF46K22T-I/MV for control and user interface management. The CTMU module supports capacitive touch buttons on glass front panels, while the 35 I/O pins drive LCDs, segment displays, relays, and triac interfaces. The 1.8V-3.6V supply range simplifies integration with both 3.3V regulated rails and direct battery backup. Five CCP/ECCP modules can generate the precise PWM outputs required for motor speed control, heating element modulation, and LED dimming in modern appliances.
推荐
Automotive Body Electronics (Non-Safety)
Although not AEC-Q100 qualified, the PIC18LF46K22T-I/MV is widely used in non-safety automotive body electronics such as interior lighting, seat controllers, mirror adjusters, and accessory modules where -40C to +85C industrial grade suffices. The device's nanoWatt XLP sleep modes support CAN-bus wake-up scenarios with sub-100 nA quiescent current, while the 64 MHz clock handles LIN-bus slave stacks and basic lighting algorithms. For AEC-Q100 qualified automotive designs, Microchip offers the PIC18F46K22-E/PTVAO and related -VAO variants, but the LF46K22 remains a low-cost option for non-safety applications.
推荐
推荐产品汇总
工程参考数据： PIC18LF46K22T-I/MV ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18LF46K22-I/MV | PIC18LF46K22-E/MV | PIC18F46K22-I/MV | PIC18LF45K22T-I/MV |
|---|---|---|---|---|---|
| Package | 40-UQFN (5x5 mm) exposed pad | 40-UQFN (5x5 mm) - same | 40-UQFN (5x5 mm) - same | 40-UQFN (5x5 mm) - same | 40-UQFN (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage Range | 1.8V to 3.6V (LF) | 1.8V to 3.6V (LF) - same | 1.8V to 3.6V (LF) - same | 2.3V to 5.5V (F) | 1.8V to 3.6V (LF) - same |
| Flash Memory | 64 KB | 64 KB - same | 64 KB - same | 64 KB - same | 32 KB |
| RAM | 3968 bytes | 3968 bytes - same | 3968 bytes - same | 3968 bytes - same | 3968 bytes - same |
| Maximum Clock Speed | 64 MHz (16 MIPS) | 64 MHz - same | 64 MHz - same | 64 MHz - same | 64 MHz - same |
| I/O Pins | 35 | 35 - same | 35 - same | 35 - same | 35 - same |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C - same | -40C to +125C (Extended) | -40C to +85C - same | -40C to +85C - same |
| nanoWatt XLP Sleep Current | <100 nA | <100 nA - same | <100 nA - same | <100 nA - same | <100 nA - same |
关键差异点
- Wide 1.8V-3.6V operating range enables direct single-cell battery operation （对比 PIC18F46K22T-I/MV)
- Industrial temperature grade -40C to +85C standard （对比 PIC18LF46K22-E/MV)
- Larger 64 KB Flash for protocol stack headroom （对比 PIC18LF45K22T-I/MV)
- True drop-in compatibility with PIC18F46K22 in same package （对比 PIC18LF26K22T-I/SO)
设计说明
The exposed thermal pad (EP) on pin 41 of the UQFN-40 package must be soldered to a grounded copper pour that is at least 1 square inch for reliable thermal and electrical performance. Estimated: based on 0.5W typical active dissipation at 64 MHz and 3.3V, theta_JA of approximately 35 C/W gives a 17C rise above ambient. Without EP soldering, mechanical reliability suffers and EMI immunity drops noticeably due to the missing ground reference. Use at least 4 thermal vias in the EP copper to conduct heat to internal ground planes.
Decouple VDD with a 100 nF ceramic capacitor placed within 3 mm of the VDD pin and a bulk 10 uF tantalum or ceramic capacitor on the main supply rail. The PIC18LF46K22T-I/MV has multiple VDD/VSS pairs internally; ensure each pair has its own 100 nF decoupling cap. According to Microchip's PIC18 K-series design guidelines, poor decoupling is the most common cause of RF emissions failing CE/FCC testing on otherwise functional designs.
Do not confuse the LF and F variants during PCB population - PIC18LF46K22T-I/MV operates from 1.8V to 3.6V while PIC18F46K22T-I/MV requires 2.3V to 5.5V. The F variant will not start at voltages below 2.3V, while the LF variant is the correct choice for single-cell Li-ion or 3.3V regulated designs. Also verify that the ICSP programming connector (PGD/PGC pins) is accessible after PCB assembly, as some surface-mount designs accidentally route traces that block header access.
When using the 64 MHz internal oscillator for USB or high-speed serial peripherals, the PIC18LF46K22T-I/MV requires careful PCB layout to avoid jitter. Estimated: keep the high-speed clock traces (OSC1/OSC2 if external crystal is used) shorter than 10 mm, route them over a continuous ground plane, and guard them with ground traces. For UART baud rates above 115200, consider using the FRC with PLL configuration locked to a precision reference rather than the untrimmed internal oscillator.
合规信息
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose VAO-suffix variants for automotive safety applications. Halogen-free mold compound confirmed in Microchip environmental compliance documentation.
