PIC18LF47K40-I/PT - 128KB Flash 8-bit XLP MCU 44-TQFP | Microchip
料号： PIC18LF47K40-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.94 | $1,470.00 |
| 1,000 | $2.65 | $2,650.00 |
PIC18LF47K40-I/PT 概述
A PIC18 microcontroller is an 8-bit Harvard-architecture RISC MCU from Microchip's PIC (Peripheral Interface Controller) family. It is a member of the broader microcontroller hierarchy: PIC18 -> PIC -> 8-bit MCU -> microcontroller -> semiconductor. The PIC18 line balances code density, performance (up to 16 MIPS at 64 MHz), and rich peripherals, making it the workhorse of the PIC family for cost-sensitive yet feature-rich applications. The 'LF' prefix denotes the wide-voltage, low-power variant suitable for battery-powered systems.
Key features include Core Independent Peripherals (CIPs) such as CWG, HLT, ZCD, and SCAN/CRC that operate without CPU intervention, dramatically reducing active time and power. The device supports up to 36 I/O pins, multiple communication interfaces (UART, SPI, I2C), and offers eXtreme Low-Power sleep currents below 100 nA in deep sleep mode. The 10-bit ADC with computation (ADC2) automates averaging and threshold comparisons in hardware.
The PIC18LF47K40 uses a 14-bit instruction word optimized for C compilers (MPLAB XC8) and supports hardware multiply and divide for DSP-like routines. The internal 64 MHz oscillator provides flexible clocking, while the WWDT and CRC/SCAN modules enhance functional safety for IEC 60730 class B compliance. The 44-TQFP footprint (10x10 mm) suits both hand-prototyping and high-density SMT production.
Typical applications include consumer appliance control, IoT sensor nodes, battery-powered instrumentation, industrial automation, and human-machine interface (HMI) panels. The wide voltage range (1.8 V-5.5 V) and XLP features suit devices that spend most of their life in sleep mode, waking periodically to sample sensors.
When designing, prioritize using the Core Independent Peripherals to offload timing-critical tasks from the CPU. Place decoupling capacitors (100 nF + 1 µF) close to VDD/AVDD and provide a dedicated trace to VSS for noise-sensitive analog references. Configure the unused pins as outputs low to minimize leakage.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate the PIC18LF47K40-I/PT for low-power embedded designs with concise engineering guidance.
直接替换替代料： PIC18LF47K40-I/PT ——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： PIC18LF47K40-I/PT （相同外形与封装尺寸） ——差异在于 ADC, Package, DAC, Core, Comparators.
快速对比工具——选择替代料号进行并排对比：
PIC18LF47K40-E/PT
✅ 直接替换✓ 有现货
$2.43 / 个
查看数据手册 →PIC18F47K40-I/PT
✅ 直接替换✓ 有现货
$1.4 / 个
查看数据手册 →PIC18LF46K40-I/PT
✅ 直接替换✓ 有现货
$2.1 / 个
查看数据手册 →PIC18LF46K42-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.4 / 个
查看数据手册 →PIC18F47K42-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.04 / 个
查看数据手册 →PIC18LF47J53-I/PT
✅ 直接替换✓ 有现货
$2.28 / 个
查看数据手册 →PIC18LF47K40-I/PT 最大额定值与电气特性
| Architecture | PIC18 8-bit RISC Harvard |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 128 KB |
| Program Memory Type | Flash (high-endurance) |
| Data RAM | 4 KB |
| Data EEPROM | 256 B |
| Supply Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit ADC2 with Computation |
| DAC | 5-bit DAC |
| Comparators | Yes |
| PWM / CCP / CWG | PWM, CCP, Complementary Waveform Generator |
| Timers | HLT, WWDT |
| CRC / SCAN | Yes (hardware CRC, peripheral scan) |
| ZCD | Zero-Cross Detection |
| Communication | UART, SPI, I2C |
| 封装 | 44-TQFP (10x10 mm) |
| 工作温度范围 | -40C to +85C (Industrial) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
PIC18LF47K40-I/PT 引脚配置
| 引脚 1 | RC7 — I/O port C bit 7 / RX/DT |
| 引脚 2 | RD0 — I/O port D bit 0 |
| 引脚 3 | RD1 — I/O port D bit 1 |
| 引脚 4 | RD2 — I/O port D bit 2 |
| 引脚 5 | RD3 — I/O port D bit 3 |
| 引脚 6 | RC4 — I/O port C bit 4 |
| 引脚 7 | RC5 — I/O port C bit 5 |
| 引脚 8 | RC6 — I/O port C bit 6 / TX/CK |
| 引脚 9 | RC3 — I/O port C bit 3 / SCL/SCK |
| 引脚 10 | RC2 — I/O port C bit 2 / SDA/SDI |
| 引脚 11 | RC1 — I/O port C bit 1 / CCP2 |
| 引脚 12 | RC0 — I/O port C bit 0 / SOSCO |
| 引脚 13 | VSS — Ground reference |
| 引脚 14 | VDD — Positive supply voltage (1.8V-5.5V) |
| 引脚 15 | RA6 — I/O port A bit 6 / OSC2 |
| 引脚 16 | RA7 — I/O port A bit 7 / OSC1 |
| 引脚 17 | RA5 — I/O port A bit 5 / MCLR/VPP |
| 引脚 18 | RA4 — I/O port A bit 4 |
| 引脚 19 | RA3 — I/O port A bit 3 / AN3 |
| 引脚 20 | RA2 — I/O port A bit 2 / AN2 |
| 引脚 21 | RA1 — I/O port A bit 1 / AN1 |
| 引脚 22 | RA0 — I/O port A bit 0 / AN0 |
| 引脚 23 | VSS — Ground reference |
| 引脚 24 | VDD — Positive supply voltage (1.8V-5.5V) |
| 引脚 25 | RB7 — I/O port B bit 7 / PGD |
| 引脚 26 | RB6 — I/O port B bit 6 / PGC |
| 引脚 27 | RB5 — I/O port B bit 5 / AN13 |
| 引脚 28 | RB4 — I/O port B bit 4 / AN11 |
| 引脚 29 | RB3 — I/O port B bit 3 / AN9 |
| 引脚 30 | RB2 — I/O port B bit 2 / AN8 |
| 引脚 31 | RB1 — I/O port B bit 1 / AN10 |
| 引脚 32 | RB0 — I/O port B bit 0 / AN12 |
| 引脚 33 | AVSS — Analog ground |
| 引脚 34 | AVDD — Analog positive supply |
| 引脚 35 | RE3 — I/O port E bit 3 |
| 引脚 36 | RE2 — I/O port E bit 2 |
| 引脚 37 | RE1 — I/O port E bit 1 |
| 引脚 38 | RE0 — I/O port E bit 0 |
| 引脚 39 | RD7 — I/O port D bit 7 |
| 引脚 40 | RD6 — I/O port D bit 6 |
| 引脚 41 | RD5 — I/O port D bit 5 |
| 引脚 42 | RD4 — I/O port D bit 4 |
| 引脚 43 | VSS — Ground reference |
| 引脚 44 | VDD — Positive supply voltage (1.8V-5.5V) |
典型应用
PIC18LF47K40-I/PT 适用于 7 应用s: Battery-Powered IoT Sensor Nodes, Consumer Appliance Control, Industrial Automation & HMI, Portable Medical Devices, Automotive Body Electronics, Smart Home & Building Automation, Energy Metering & Power Monitoring.
Battery-Powered IoT Sensor Nodes
The PIC18LF47K40-I/PT fits battery-powered IoT sensor nodes because its XLP sleep currents stay below 100 nA, allowing multi-year operation on a single CR2032 or 2xAA cell. Its 1.8 V minimum supply supports direct connection to low-voltage coin cells without a boost converter. The integrated 10-bit ADC2 with Computation autonomously scans and averages sensors while the CPU sleeps, while the ZCD and comparators trigger wake-up on external events. Compared to higher-power Cortex-M0 alternatives, the PIC18LF47K40 draws roughly 10x less sleep current at the cost of computational throughput.
推荐
Consumer Appliance Control
In consumer appliance control (washing machines, dishwashers, microwave ovens), the PIC18LF47K40-I/PT drives H-bridges, triac-controlled AC loads, and front-panel user interfaces from a single 5 V rail. The 36 I/O pins, CWG (Complementary Waveform Generator), and HLT (Hardware Limit Timer) offload brushless-DC motor commutation and zero-cross TRIAC firing from the CPU, freeing cycles for user-interface polling. The wide 1.8-5.5 V range simplifies designs that must survive brownouts during motor inrush events. Compared to PIC18F46K22 predecessors, this part adds CWG/HLT CIPs that cut code size by roughly 30%.
推荐
Industrial Automation & HMI
For industrial automation and HMI panels, the PIC18LF47K40-I/PT runs Modbus RTU over UART, drives character or graphical LCDs via SPI, and reads analog process variables through its 10-bit ADC2. The hardware CRC and SCAN modules enable IEC 60730 class B compliance for household and similar electrical equipment, providing self-test capabilities required for certification. The 44-TQFP package fits compact DIN-rail mounting footprints. Compared to ARM Cortex-M0+ alternatives at similar prices, the PIC18LF47K40 offers a simpler toolchain (XC8) and faster time-to-prototype for engineers familiar with the PIC ecosystem.
推荐
Portable Medical Devices
In portable medical devices such as glucose meters, pulse oximeters, and digital thermometers, the PIC18LF47K40-I/PT provides low-power operation essential for battery life targets of 1-2 years. The 10-bit ADC2 with hardware averaging reads sensor signals with low CPU intervention, while the integrated 5-bit DAC drives bias currents or LED currents in optical sensors. The hardware CRC supports FDA 21 CFR Part 11 firmware integrity requirements. Compared to discrete analog front-end designs, integrating the ADC2 and DAC reduces BOM cost by approximately 30%.
推荐
Automotive Body Electronics
For automotive body electronics (interior lighting, seat controllers, climate control panels), the PIC18LF47K40-I/PT in its extended-temperature 'E' variant supports -40C to +125C operation per Microchip datasheet 40001844E. The CWG generates complementary PWM outputs for LED matrix drivers, while the ZCD detects AC zero crossings for dimming. LIN protocol stacks run efficiently on the 16 MIPS core. Compared to dedicated LIN transceivers, this PIC-based design offers a single-chip solution for nodes that combine sensing, logic, and bus communication.
推荐
Smart Home & Building Automation
In smart home and building automation hubs, the PIC18LF47K40-I/PT coordinates wireless modules via SPI/UART, monitors sensors through ADC2, and drives relay/SSR outputs via its PWM peripherals. The Core Independent Peripherals (CWG, HLT, ZCD) autonomously handle timing-critical dimming and motor-control tasks while the CPU manages higher-level protocols like Zigbee or LoRa bridging. Compared to higher-end Cortex-M4 hubs, this part reduces system cost by approximately 40% for sub-gateway nodes that handle simple sensor aggregation.
推荐
Energy Metering & Power Monitoring
In single-phase energy meters and power-monitoring devices, the PIC18LF47K40-I/PT samples voltage and current waveforms through its 10-bit ADC2 at rates sufficient for class 1 metering accuracy. The ZCD detects mains zero crossings for accurate power calculations, while the 16-bit timer captures pulse counts from external sensors. Hardware CRC ensures data integrity in billing applications. Compared to dedicated metering ASSPs, this PIC-based approach allows custom tariff logic and communication interfaces (Modbus, M-Bus) without external protocol ICs.
推荐
推荐产品汇总
工程参考数据： PIC18LF47K40-I/PT ——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 | PIC18LF47K40-E/PT | PIC18F47K40-I/PT | PIC18LF46K40-I/PT | PIC18LF46K42-I/PT | PIC18F47K42-I/PT | PIC18LF47J53-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Flash Memory | 128 KB | 128 KB | 128 KB | 64 KB (-50%) | 64 KB (-50%) | 128 KB | 128 KB |
| RAM | 4 KB | 4 KB | 4 KB | 1 KB (-75%) | 1 KB (-75%) | 8 KB (+100%) | 4 KB |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +125C (extended) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| USB Support | No | No | No | No | No | No | Yes (USB 2.0 FS) |
| Core Independent Peripherals | CWG, HLT, ZCD, SCAN/CRC | CWG, HLT, ZCD, SCAN/CRC | CWG, HLT, ZCD, SCAN/CRC | CWG, HLT, ZCD, SCAN/CRC | CLC, DMA, 16-bit PWM | CLC, DMA, 16-bit PWM | RTCC, CTMU |
关键差异点
- Lowest voltage operation in 128KB-class PIC18 family （对比 PIC18F47K40-I/PT)
- Core Independent Peripherals reduce CPU load （对比 PIC18F47K42-I/PT)
- Hardware CRC and SCAN support functional safety （对比 PIC18LF46K40-I/PT)
设计说明
Place a 100 nF decoupling capacitor as close as possible to each VDD pin (13/24/44) and to AVdd (pin 34), plus a 1 uF bulk capacitor at the supply entry. For low-noise analog performance, use a ferrite bead or small inductor between VDD and AVdd to isolate the analog supply. The PIC18LF47K40-I/PT supports sleep currents below 100 nA; ensure all unused I/O pins are configured as outputs low to avoid floating-input leakage that can dominate sleep current. Per Microchip datasheet 40001844E, an unconfigured input pin can leak 1-5 uA, dwarfing the XLP sleep spec.
Route the ICSP signals (PGD/RB7, PGC/RB6, MCLR/RA5) directly to a 6-pin header with no series resistors; add ESD protection diodes or 100 ohm series resistors if the header is exposed. Place the 32.768 kHz crystal close to SOSCO/SOSCI (RC0/RC1) with short traces and a ground guard ring to minimize noise coupling. The HFINTOSC internal 64 MHz oscillator eliminates the need for an external crystal in most designs, reducing BOM cost by approximately $0.15 per board.
Do not connect MCLR/RA5 directly to VDD without a pull-up resistor; either leave it as a reset pin with a 10 kohm pull-up to VDD, or disable MCLR in the CONFIG registers and use RA5 as a digital input only. Mixing LF and F variants on the same PCB footprint is safe only at VDD >= 2.3 V. Per Microchip datasheet 40001844E, the LF variant must operate above 1.8 V or erratic Flash reads/writes may occur.
When using the ADC2 for accurate measurements, add a small RC filter (1 kohm + 100 nF) on each analog input to limit source impedance and prevent charge-kickback-induced nonlinearity. The maximum specified source impedance for the ADC is 10 kohm per Microchip datasheet 40001844E. For high-impedance sensors (>10 kohm), use the internal CTMU or an external op-amp buffer to drive the ADC pins cleanly.
合规信息
RoHS and REACH compliant per Microchip product page. Industrial temperature grade; not AEC-Q100 qualified - choose PIC18LF47K40-E/PT for extended-temperature applications.