PIC18LF47K40-I/PT - 128KB Flash 8-bit XLP MCU 44-TQFP | Microchip
MPN: PIC18LF47K40-I/PT ✓ Hoạt độngPIC18LF47K40-I/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF47K40-I/PT — 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 PIC18LF47K40-I/PT (cùng hình factor và footprint) — khác nhau ở ADC, Package, DAC, Core, Comparators.
PIC18LF47K40-E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F47K40-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF46K40-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF46K42-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F47K42-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF47J53-I/PT
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Xem tài liệu →PIC18LF47K40-I/PT Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | 44-TQFP (10x10 mm) |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF47K40-I/PT
| Chân 1 | RC7 — I/O port C bit 7 / RX/DT |
| Chân 2 | RD0 — I/O port D bit 0 |
| Chân 3 | RD1 — I/O port D bit 1 |
| Chân 4 | RD2 — I/O port D bit 2 |
| Chân 5 | RD3 — I/O port D bit 3 |
| Chân 6 | RC4 — I/O port C bit 4 |
| Chân 7 | RC5 — I/O port C bit 5 |
| Chân 8 | RC6 — I/O port C bit 6 / TX/CK |
| Chân 9 | RC3 — I/O port C bit 3 / SCL/SCK |
| Chân 10 | RC2 — I/O port C bit 2 / SDA/SDI |
| Chân 11 | RC1 — I/O port C bit 1 / CCP2 |
| Chân 12 | RC0 — I/O port C bit 0 / SOSCO |
| Chân 13 | VSS — Ground reference |
| Chân 14 | VDD — Positive supply voltage (1.8V-5.5V) |
| Chân 15 | RA6 — I/O port A bit 6 / OSC2 |
| Chân 16 | RA7 — I/O port A bit 7 / OSC1 |
| Chân 17 | RA5 — I/O port A bit 5 / MCLR/VPP |
| Chân 18 | RA4 — I/O port A bit 4 |
| Chân 19 | RA3 — I/O port A bit 3 / AN3 |
| Chân 20 | RA2 — I/O port A bit 2 / AN2 |
| Chân 21 | RA1 — I/O port A bit 1 / AN1 |
| Chân 22 | RA0 — I/O port A bit 0 / AN0 |
| Chân 23 | VSS — Ground reference |
| Chân 24 | VDD — Positive supply voltage (1.8V-5.5V) |
| Chân 25 | RB7 — I/O port B bit 7 / PGD |
| Chân 26 | RB6 — I/O port B bit 6 / PGC |
| Chân 27 | RB5 — I/O port B bit 5 / AN13 |
| Chân 28 | RB4 — I/O port B bit 4 / AN11 |
| Chân 29 | RB3 — I/O port B bit 3 / AN9 |
| Chân 30 | RB2 — I/O port B bit 2 / AN8 |
| Chân 31 | RB1 — I/O port B bit 1 / AN10 |
| Chân 32 | RB0 — I/O port B bit 0 / AN12 |
| Chân 33 | AVSS — Analog ground |
| Chân 34 | AVDD — Analog positive supply |
| Chân 35 | RE3 — I/O port E bit 3 |
| Chân 36 | RE2 — I/O port E bit 2 |
| Chân 37 | RE1 — I/O port E bit 1 |
| Chân 38 | RE0 — I/O port E bit 0 |
| Chân 39 | RD7 — I/O port D bit 7 |
| Chân 40 | RD6 — I/O port D bit 6 |
| Chân 41 | RD5 — I/O port D bit 5 |
| Chân 42 | RD4 — I/O port D bit 4 |
| Chân 43 | VSS — Ground reference |
| Chân 44 | VDD — Positive supply voltage (1.8V-5.5V) |
Ứng dụng tiêu biểu
PIC18LF47K40-I/PT phù hợp cho 7 Áp dụngs: 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.
Được đề xuất
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%.
Được đề xuất
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.
Được đề xuất
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%.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF47K40-I/PT — 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 | 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 |
Bảo phân biệt quan trọng
- Lowest voltage operation in 128KB-class PIC18 family (vsPIC18F47K40-I/PT)
- Core Independent Peripherals reduce CPU load (vsPIC18F47K42-I/PT)
- Hardware CRC and SCAN support functional safety (vsPIC18LF46K40-I/PT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Industrial temperature grade; not AEC-Q100 qualified - choose PIC18LF47K40-E/PT for extended-temperature applications.