PIC18LF47J53-I/ML - 8-Bit 48MHz 128KB Flash XLP MCU | Microchip
MPN： PIC18LF47J53-I/ML ✓ 啟用中PIC18LF47J53-I/ML 概覽
What is a PIC microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash, RAM, EEPROM), and peripherals (ADC, timers, communication interfaces) onto one die. PIC microcontrollers use a modified Harvard RISC architecture and are widely adopted for embedded control due to their deterministic instruction execution, mature toolchain, and broad peripheral selection. The PIC18F/LF family sits in the high-performance tier of Microchip's 8-bit portfolio, supporting C-compiled firmware and USB, CAN, and Ethernet peripherals.
Key features include an integrated 12-bit A/D converter with up to 13 input channels, multiple 16-bit timers, two USART, SPI, I2C interfaces, a full-speed USB 2.0 device/host/OTG controller, and 34 general-purpose digital I/O pins. The LF (low-power) suffix denotes the 2.0 V to 3.6 V operating range with XLP nanoWatt technology, achieving standby currents down to the nanoamp range.
The device uses a 16-bit modified Harvard instruction set with 8-bit data path, providing 12 MIPS throughput at 48 MHz. On-chip peripherals include the USB module with internal transceiver, comparators, CTMU for capacitive touch sensing, and an RTCC with calendar mode. The 44-QFN exposed-pad package enables efficient thermal dissipation in compact designs.
Typical applications include USB peripherals (HID, CDC, mass storage), battery-powered sensor nodes, capacitive touch user interfaces, home automation controllers, and low-power IoT edge nodes. The integrated USB and large Flash make it especially suitable for designs that need firmware upgradeability over USB.
When designing with this part, ensure the exposed pad is soldered to a sufficient copper pour for thermal relief and that decoupling capacitors (100 nF + 1 µF) are placed within 5 mm of each supply pin. For battery applications, leverage the nanoWatt sleep modes and the RTCC calendar mode to keep average current below 1 µA.
直接替換替代品，適用於 PIC18LF47J53-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： PIC18LF47J53-I/ML （相同外形與佔位） — 差異在於 ADC, Package, Core, USB, Communication.
PIC18F47J53-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF46J53-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF47J13-I/ML
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18LF45K40-I/ML
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18LF45J50-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18LF47J53-I/ML 最大額定值與電氣特性
| Core | PIC18 (8-bit modified Harvard RISC) |
| Family | PIC® XLP™ 18J |
| Maximum CPU Speed | 48 MHz (12 MIPS) |
| Program Memory (Flash) | 128 KB (64K x 16) |
| RAM | 3.8 KB |
| Operating Voltage (Vdd) | 2.0 V to 3.6 V |
| I/O Pins | 34 |
| ADC | 13-channel x 10/12-bit |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Timers | Multiple 16-bit |
| Communication Interfaces | 2x USART, SPI, I2C |
| 封裝 | 44-QFN (8x8 mm) with exposed pad |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C (industrial) |
| RoHS 狀態 | Compliant |
PIC18LF47J53-I/ML 腳位配置
| 腳位 1 | RB5 — I/O port B bit 5 / PGM |
| 腳位 2 | RB4 — I/O port B bit 4 |
| 腳位 3 | RB3 — I/O port B bit 3 |
| 腳位 4 | RB2 — I/O port B bit 2 |
| 腳位 5 | RB1 — I/O port B bit 1 |
| 腳位 6 | RB0 — I/O port B bit 0 / INT0 |
| 腳位 7 | Vdd — Positive supply voltage (2.0-3.6V) |
| 腳位 8 | Vss — Ground reference |
| 腳位 9 | RC7 — I/O port C bit 7 / RX |
| 腳位 10 | RC6 — I/O port C bit 6 / TX |
| 腳位 11 | RC5 — I/O port C bit 5 / D+ |
| 腳位 12 | RC4 — I/O port C bit 4 / D- |
| 腳位 13 | D+ — USB data plus |
| 腳位 14 | D- — USB data minus |
| 腳位 15 | Vbus — USB Vbus sense input |
| 腳位 16 | RA3 — I/O port A bit 3 |
| 腳位 17 | RA2 — I/O port A bit 2 |
| 腳位 18 | RA1 — I/O port A bit 1 |
| 腳位 19 | RA0 — I/O port A bit 0 |
| 腳位 20 | Vss — Ground reference |
| 腳位 21 | RA5 — I/O port A bit 5 |
| 腳位 22 | RA4 — I/O port A bit 4 |
| 腳位 23 | RC2 — I/O port C bit 2 |
| 腳位 24 | RC1 — I/O port C bit 1 |
| 腳位 25 | RC0 — I/O port C bit 0 |
| 腳位 26 | RD0 — I/O port D bit 0 |
| 腳位 27 | RD1 — I/O port D bit 1 |
| 腳位 28 | RD2 — I/O port D bit 2 |
| 腳位 29 | RD3 — I/O port D bit 3 |
| 腳位 30 | RD4 — I/O port D bit 4 |
| 腳位 31 | RD5 — I/O port D bit 5 |
| 腳位 32 | RD6 — I/O port D bit 6 |
| 腳位 33 | RD7 — I/O port D bit 7 |
| 腳位 34 | Vss — Ground reference |
| 腳位 35 | RE0 — I/O port E bit 0 |
| 腳位 36 | RE1 — I/O port E bit 1 |
| 腳位 37 | RE2 — I/O port E bit 2 |
| 腳位 38 | AVdd — Analog positive supply |
| 腳位 39 | AVss — Analog ground |
| 腳位 40 | RA7 — I/O port A bit 7 / OSC1 |
| 腳位 41 | RA6 — I/O port A bit 6 / OSC2 |
| 腳位 42 | MCLR — Master clear / reset input |
| 腳位 43 | RB7 — I/O port B bit 7 |
| 腳位 44 | RB6 — I/O port B bit 6 / PGC |
| 腳位 EP | EP — Exposed thermal pad - connect to Vss/ground plane |
典型應用
PIC18LF47J53-I/ML 適用於 6 應用s: USB HID Peripherals, Battery-Powered Sensor Nodes, Capacitive Touch User Interfaces, Home Automation Controllers, Medical Monitoring Devices, Industrial Control Interfaces.
USB HID Peripherals
The PIC18LF47J53-I/ML is engineered for USB Human Interface Devices thanks to its integrated USB 2.0 Full-Speed controller with on-chip transceiver, eliminating external PHY components. The 128 KB Flash easily accommodates USB stacks (Microchip's USB Framework) plus HID report descriptors and application firmware. Its 48 MHz core handles enumeration and polling at 1 ms intervals without CPU loading issues, while the nanoWatt sleep modes enable bus-powered designs drawing <100 µA suspend current.
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Battery-Powered Sensor Nodes
For wireless and wired sensor nodes running from a CR2032 or 2xAA battery, the PIC18LF47J53-I/ML's XLP nanoWatt technology is critical. Standby currents below 1 µA extend coin-cell battery life to multiple years. The 13-channel 12-bit ADC provides sufficient resolution for temperature, humidity, and analog sensor interfaces, while the integrated RTCC with calendar mode timestamps measurements during sleep. The 2.0 V minimum Vdd supports direct CR2032 operation without boost circuitry.
推薦
Capacitive Touch User Interfaces
The PIC18LF47J53-I/ML integrates the CTMU (Charge Time Measurement Unit) peripheral, enabling robust capacitive touch sensing on up to 34 I/O pins without external components. This makes it ideal for control panels, appliance interfaces, and replacement of mechanical buttons with touch sliders. The 128 KB Flash accommodates Microchip's mTouch library plus application firmware, while the 44-QFN 8x8 mm footprint fits behind compact glass overlays with <2 mm border width.
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Home Automation Controllers
For Zigbee/Z-Wave/WiFi gateway appliances and smart-home control hubs, the PIC18LF47J53-I/ML provides USB for host-mode connectivity to WiFi modules, plus UART/SPI/I2C for peripheral networking. Its 48 MHz CPU processes communication stacks and user-interface logic simultaneously. The wide 2.0-3.6 V range supports direct 3.3V operation from switching regulators common in home automation backplanes, while nanoWatt sleep maintains <1 mA standby in always-listening devices.
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Medical Monitoring Devices
Portable medical devices such as pulse oximeters, glucometers, and wearable health monitors benefit from the PIC18LF47J53-I/ML's low-power operation and integrated USB for charging/PC data transfer. The 12-bit ADC captures precision analog signals from biosensors, while the RTCC timestamps patient measurements. Its 44-QFN exposed pad enables compact PCB designs that fit wrist-worn form factors, and the industrial -40C to +85C range supports typical healthcare environments.
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Industrial Control Interfaces
Industrial HMIs, panel meters, and process controllers use the PIC18LF47J53-I/ML for its USB configuration port, multi-interface connectivity (2x USART, SPI, I2C), and 13 ADC channels. Industrial-grade -40C to +85C operating temperature ensures reliable operation in factory environments, while the 44-QFN package withstands typical vibration profiles. The 12 MIPS throughput handles Modbus RTU ASCII parsing, display updates, and sensor acquisition concurrently.
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推薦產品摘要
工程參考資料，適用於 PIC18LF47J53-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 | PIC18F47J53-I/ML | PIC18LF46J53-I/ML | PIC18LF47J13-I/ML | PIC18LF45K40-I/ML | PIC18LF45J50-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-TQFP - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 64 KB | 128 KB | 32 KB | 32 KB |
| RAM | 3.8 KB | 3.8 KB | 3.8 KB | 3.8 KB | 2 KB | 2 KB |
| CPU Speed | 48 MHz (12 MIPS) | 48 MHz | 48 MHz | 48 MHz | 64 MHz | 48 MHz |
| Operating Voltage | 2.0 V to 3.6 V | 2.15 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 1.8 V to 3.6 V | 2.0 V to 3.6 V |
| USB Peripheral | USB 2.0 FS Device/Host/OTG | USB 2.0 FS | USB 2.0 FS | No USB | No USB | USB 2.0 FS |
| ADC | 13 ch x 12-bit | 13 ch x 12-bit | 13 ch x 12-bit | 13 ch x 12-bit | 35 ch x 10-bit | 13 ch x 10-bit |
| I/O Pins | 34 | 34 | 34 | 34 | 34 | 34 |
主要差異化特點
- Integrated USB 2.0 Full-Speed with on-chip transceiver (對比PIC18LF47J13-I/ML)
- 128 KB Flash versus 64 KB on lower-density variant (對比PIC18LF46J53-I/ML)
- Lower 2.0 V minimum Vdd versus 2.15 V on F variant (對比PIC18F47J53-I/ML)
設計說明
The 44-QFN package requires the exposed pad (EP) to be soldered directly to a ground-plane copper pour on the top or inner PCB layer. Per Microchip layout guidelines, the EP should have a minimum of 9 thermal vias (0.3 mm drill, 0.6 mm pad) connecting to the internal ground plane for thermal dissipation and electrical grounding. Failing to solder the EP can cause thermal stress, electrical instability, and reduced operating temperature margin.
Place 100 nF ceramic decoupling capacitors within 5 mm of each Vdd pin and a single 10 µF bulk capacitor near the MCU. For USB applications, add 0.1 µF + 4.7 µF capacitors on the Vbus pin to handle inrush current when the device is bus-powered. The LF variant's 2.0 V minimum Vdd supports direct CR2032 battery operation without boost converter, simplifying battery-powered designs significantly.
When migrating from PIC18F to PIC18LF variants, verify the operating voltage does not drop below 2.0 V during battery end-of-life - the LF variant will brown-out while the F variant would continue operating. The 44-QFN is not pin-compatible with the 44-TQFP package used on related PIC18LF45J50, despite identical pin counts; PCB footprints must not be shared between these packages.
合規資訊
RoHS and REACH compliance confirmed via Microchip product page and distributor listings. Standard Microchip conflict-minerals declaration applies. Not AEC-Q100 qualified; for automotive applications consult Microchip's AEC-Q100 catalog.
