PIC18LF47K40T-I/MV - 64MHz 128KB Flash 8-bit MCU | Microchip
料号： PIC18LF47K40T-I/MV ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.18 | $31.80 |
| 100 | $2.85 | $285.00 |
| 500 | $2.55 | $1,275.00 |
| 1,000 | $2.32 | $2,320.00 |
PIC18LF47K40T-I/MV 概述
A PIC18 microcontroller is an 8-bit RISC-architecture MCU in the broader category of microcontrollers -> embedded controllers -> integrated circuits. The PIC18 family uses a Harvard architecture with separate program and data buses, optimized for C-compiled code. The LF sub-family denotes the low-voltage variant (1.8 V to 3.6 V), while the K-series adds high-performance analog and CIPs.
Key features include a 10-bit ADC with Computation (ADCC) supporting Capacitive Voltage Divider (CVD) for touch sensing, a 5-bit DAC, multiple comparators, PWM/CCP/CWG peripherals, a hardware limit timer (HLT), windowed watchdog timer (WWDT), SCAN/CRC, zero-cross detection (ZCD), Peripheral Pin Select (PPS), and an EUSART interface. It supports up to 36 I/O pins and operates across -40C to +85C.
The CIPs let timers, PWMs, and communication peripherals run without CPU intervention, dramatically reducing active time and average current draw. Combined with XLP sleep currents in the sub-microamp range, this device fits energy harvesting and battery-powered designs.
Typical applications include capacitive touch user interfaces, low-power sensor nodes, home appliances, motor control (BLDC/PMSM with CWG), automotive body modules (non-safety), industrial control panels, and general-purpose embedded control. Designers migrating from older PIC16/PIC18 devices benefit from a streamlined instruction set and dual-capture compare.
Design tip: a 0.1uF bypass capacitor must be placed within 5 mm of VDD, with separate bulk capacitance if the application drives high-current peripherals. PPS allows flexible signal routing but requires explicit pin configuration in code.
This page synthesizes distributor pricing, drop-in same-package alternatives, and engineering design notes that complement the manufacturer datasheet for faster engineer evaluation.
直接替换替代料： PIC18LF47K40T-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： PIC18LF47K40T-I/MV （相同外形与封装尺寸） ——差异在于 ADC, Package, Operating Temperature, DAC, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC18LF47K40-I/MV
✅ 直接替换✓ 有现货
$2.02 / 个
查看数据手册 →PIC18F47K40-I/MV
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF46K40-I/MV
✅ 直接替换✓ 有现货
$1.78 / 个
查看数据手册 →PIC18F46K40-I/MV
✅ 直接替换✓ 有现货
$2.15 / 个
查看数据手册 →PIC18LF47K40-E/MV
✅ 直接替换✓ 有现货
$1.9 / 个
查看数据手册 →PIC18LF47K40T-I/MV 最大额定值与电气特性
| Core | PIC18 RISC 8-bit |
| Program Memory (Flash) | 128 KB (64K x 16) |
| Data RAM | 4 KB (3.53 KB usable per datasheet) |
| Data EEPROM | 256 B |
| Maximum CPU Frequency | 64 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 36 |
| ADC | 10-bit ADC with Computation (ADCC), supports CVD |
| DAC | 5-bit |
| Comparators | Yes |
| PWM / CCP / CWG | Yes |
| Hardware Limit Timer (HLT) | Yes |
| Windowed Watchdog (WWDT) | Yes |
| SCAN/CRC | Yes |
| Zero-Cross Detection (ZCD) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Communication | EUSART |
| XLP (eXtreme Low Power) | Yes |
| 工作温度 | -40C to +85C (Industrial, I grade) |
| 封装 | 40-pin UQFN (5x5 mm) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
PIC18LF47K40T-I/MV 引脚配置
| 引脚 1 | RA0 — Bidirectional I/O / analog / PPS-capable |
| 引脚 2 | RA1 — Bidirectional I/O / analog |
| 引脚 3 | RA2 — Bidirectional I/O / analog |
| 引脚 4 | RA3 — Bidirectional I/O / analog |
| 引脚 5 | RA4 — Bidirectional I/O / analog |
| 引脚 6 | RA5 — Bidirectional I/O / analog |
| 引脚 7 | RA6 — Bidirectional I/O / analog |
| 引脚 8 | RA7 — Bidirectional I/O / analog |
| 引脚 9 | VSS — Ground reference |
| 引脚 10 | RA8 — Bidirectional I/O / analog |
| 引脚 11 | RB0 — Bidirectional I/O / interrupt-on-change |
| 引脚 12 | RB1 — Bidirectional I/O / interrupt-on-change |
| 引脚 13 | RB2 — Bidirectional I/O / interrupt-on-change |
| 引脚 14 | RB3 — Bidirectional I/O / interrupt-on-change |
| 引脚 15 | RB4 — Bidirectional I/O / interrupt-on-change |
| 引脚 16 | RB5 — Bidirectional I/O / interrupt-on-change |
| 引脚 17 | RB6 — Bidirectional I/O / ICSPCLK / ICD |
| 引脚 18 | RB7 — Bidirectional I/O / ICSPDAT / ICD |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | VDD — Positive supply (1.8 V to 3.6 V) |
| 引脚 21 | RC0 — Bidirectional I/O |
| 引脚 22 | RC1 — Bidirectional I/O |
| 引脚 23 | RC2 — Bidirectional I/O |
| 引脚 24 | RC3 — Bidirectional I/O |
| 引脚 25 | RC4 — Bidirectional I/O |
| 引脚 26 | RC5 — Bidirectional I/O |
| 引脚 27 | RC6 — Bidirectional I/O / TX |
| 引脚 28 | RC7 — Bidirectional I/O / RX |
| 引脚 29 | RC8 — Bidirectional I/O |
| 引脚 30 | RC9 — Bidirectional I/O |
| 引脚 31 | VSS — Ground reference |
| 引脚 32 | VDD — Positive supply (1.8 V to 3.6 V) |
| 引脚 33 | RD0 — Bidirectional I/O |
| 引脚 34 | RD1 — Bidirectional I/O |
| 引脚 35 | RD2 — Bidirectional I/O |
| 引脚 36 | RD3 — Bidirectional I/O |
| 引脚 37 | RD4 — Bidirectional I/O |
| 引脚 38 | RD5 — Bidirectional I/O |
| 引脚 39 | RD6 — Bidirectional I/O |
| 引脚 40 | RD7 — Bidirectional I/O / EEPGD |
典型应用
PIC18LF47K40T-I/MV 适用于 6 应用s: Capacitive Touch User Interface, Low-Power Wireless Sensor Node, BLDC / PMSM Motor Control, Home Appliance Control Board, Industrial Process Sensor Module, Automotive Body Control (non-safety).
Capacitive Touch User Interface
The PIC18LF47K40T-I/MV integrates a 10-bit ADC with Computation (ADCC) that performs Capacitive Voltage Divider (CVD) measurements, replacing an external touch-sensing IC and BOM. Up to 36 touch channels can be scanned via the hardware SCAN peripheral while the CPU sleeps, preserving XLP sub-microamp sleep current for battery-powered remote controls, white-goods panels, and proximity-sensing HMIs. The 64 MHz core provides ample cycles to debounce gestures and run a small GUI state machine.
推荐
Low-Power Wireless Sensor Node
XLP technology keeps the PIC18LF47K40T-I/MV active current well below 1 mA at 1 MHz / 1.8 V and sleep current under 1 uA with the Real-Time Clock active. Pair the MCU with an SPI-connected radio and the integrated SCAN/CRC, WWDT, and PPS peripherals handle housekeeping autonomously, extending coin-cell lifetime to months in temperature, humidity, or motion-sensing IoT nodes. The 4 KB RAM buffers sensor data before radio transmission bursts.
推荐
BLDC / PMSM Motor Control
The PIC18LF47K40T-I/MV includes dedicated motor-control peripherals: PWM, CCP, and the Complementary Waveform Generator (CWG) for dead-band control of half-bridges. Core Independent Peripherals (CIPs) like the Hardware Limit Timer (HLT) trigger hardware shutdowns within nanoseconds on over-current events, supporting BLDC ceiling fans, small pumps, and appliance motor drives. The 5-bit DAC provides reference voltage for current-sense amplifiers.
推荐
Home Appliance Control Board
The PIC18LF47K40T-I/MV's broad peripheral set (EUSART, ADCC, ZCD for AC mains zero-crossing, PWM, comparators) replaces multiple discrete ICs in washing-machine, dishwasher, microwave, and induction-cooktop front panels. ZCD enables zero-cross triac switching to minimize EMI, while the industrial-grade operating range and AEC-Q100 sibling variants allow reuse on the same firmware across consumer and automotive body modules.
推荐
Industrial Process Sensor Module
Industrial 4-20 mA loop-powered transmitters benefit from the PIC18LF47K40T-I/MV's 1.8 V operation, 10-bit ADC accuracy, and EUSART for HART-modem or RS-485 bus connection. The WWDT and CRC peripherals deliver IEC 61508 SIL-friendly diagnostic coverage; the 128 KB Flash supports complex linearization and calibration tables for pressure, flow, and level transmitters operating from -40C to +85C in field cabinets.
推荐
Automotive Body Control (non-safety)
Body electronics such as lighting controllers, mirror adjusters, seat modules, and HVAC blend-door actuators leverage the PIC18F47K40-I/MV (5V) variant of this device family for direct 12 V battery operation. The same 40-pin UQFN footprint allows code reuse between LF (3.3 V) and F (5 V) versions; the integrated SCAN/CRC and WWDT satisfy automotive software-quality requirements.
推荐
推荐产品汇总
工程参考数据： PIC18LF47K40T-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 | PIC18LF47K40-I/MV | PIC18F47K40-I/MV | PIC18LF46K40-I/MV |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin UQFN (MV) 5x5 mm | 40-pin UQFN (MV) - same | 40-pin UQFN (MV) - same | 40-pin UQFN (MV) - same |
| Flash Memory | 128 KB | 128 KB | 128 KB | 64 KB |
| Data RAM | 4 KB | 4 KB | 4 KB | 3.5 KB |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V |
| Max CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| I/O Pins | 36 | 36 | 36 | 36 |
| ADC Resolution | 10-bit ADCC (CVD) | 10-bit ADCC (CVD) | 10-bit ADCC (CVD) | 10-bit ADCC (CVD) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
关键差异点
- 128 KB Flash / 4 KB RAM in 40-pin UQFN with XLP support （对比 PIC18LF46K40-I/MV)
- Low-voltage 1.8 V to 3.6 V operation at 64 MHz （对比 PIC18F47K40-I/MV)
- Integrated ADCC with Capacitive Voltage Divider (CVD) （对比 PIC18LF46K22-I/ML)
设计说明
Place a 0.1 uF decoupling capacitor as close as possible (within 5 mm) to each VDD pin (pins 20 and 32), with a 10 uF bulk capacitor on the same node. The PIC18LF47K40T-I/MV draws sharp transient currents when the HFINTOSC PLL starts up; insufficient decoupling causes spurious resets on VDD droop. Tie unused VDD pins to VDD rather than leaving them floating.
The exposed thermal pad (EP) on the 40-pin UQFN package must be soldered to a PCB pad tied to VSS. Stencil aperture should be a 5x5 array of 0.3 mm dots to ensure correct solder fillet and thermal dissipation. Failing to solder the EP exposes the die to intermittent thermal shutdown under high peripheral switching loads.
PPS must be unlocked via PPSLOCK before re-assigning peripheral outputs to alternate pins; if the lock sequence is incorrect, peripherals appear dead on the new pin and re-enumeration is required after a power cycle. Also note that the -T suffix denotes tape-and-reel packaging - the -I (industrial) and -E (extended) suffixes denote temperature grade, not package.
When using the ADCC in CVD mode for capacitive touch, route sensor traces as short, narrow (0.15 mm) traces over a hatched ground pour to maximize touch sensitivity and reject humidity drift. Add a 1 nF series capacitor on the CVD reference pin to filter environmental baseline noise, and run a per-channel baseline calibration in firmware at startup to compensate for overlay thickness.
合规信息
RoHS and REACH compliant per Microchip product page. Industrial-grade (I) device, not AEC-Q100 qualified; for automotive safety applications use a Q1-graded PIC18 variant.
