PIC18LF46J50-I/ML - 8-bit 48MHz USB MCU 64KB Flash | Microchip
부품 번호: PIC18LF46J50-I/ML ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $5.85 | $5.85 |
| 10 | $5.26 | $52.60 |
| 100 | $4.68 | $468.00 |
| 500 | $4.21 | $2,105.00 |
| 1,000 | $3.75 | $3,750.00 |
PIC18LF46J50-I/ML 개요
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and peripherals such as timers, communication interfaces, and analog modules. 8-bit MCUs are widely used in cost-sensitive, deterministic embedded applications because of their simple instruction set, predictable interrupt latency, and low power consumption. The PIC18 architecture is an enhanced 8-bit core with a 16-bit instruction word, hardware multiplier, and linear addressing, sitting between traditional 8-bit controllers and more complex 16/32-bit devices. Within Microchip's portfolio, the PIC18LF46J50 belongs to the J-series, which adds full-speed USB, deep-sleep modes, and a wider voltage range.
Key features include on-chip full-speed USB 2.0 device/host/OTG, 36 digital I/O pins, multiple serial interfaces (UART, SPI, I2C), a 10-bit ADC with up to 13 channels, and nanoWatt XLP deep-sleep current in the nanoamp range. The 44-QFN package provides a small 8x8 mm footprint with an exposed thermal pad for improved heat dissipation, making it well-suited for space-constrained USB dongles, sensor hubs, and consumer peripherals.
Typical applications include USB HID peripherals such as keyboards, mice, and game controllers, USB-to-UART bridges, low-power sensor data loggers, and battery-powered IoT edge nodes. The wide 2.0-3.6V operating range and deep-sleep modes allow direct Li-ion or 2xAA battery operation while still supporting USB when plugged in.
When designing with this part, place the 44-QFN exposed pad over a continuous ground plane with multiple thermal vias to meet the package's thermal and electrical requirements. Decoupling capacitors must be placed as close as possible to the VDD/VSS pins and the VUSB pin, following the USB transceiver layout guidelines in the datasheet.
드롭인 대체품: PIC18LF46J50-I/ML — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC18LF46J50-I/ML (동일 폼 팩터 및 풋프린트) — 차이점: ADC, Package, Timers, Operating Temperature, Core.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC18LF46J50T-I/ML
✅ 드롭인✓ 재고 있음
$3.15 / 개
데이터시트 보기 →PIC18F46J50-I/ML
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18LF46J50-I/PT
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18LF46J53-I/ML
✅ 드롭인✓ 재고 있음
$2.78 / 개
데이터시트 보기 →PIC18LF46K40-I/ML
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18LF46J50-I/ML 최대 정격 & 전기적 특성
| Core Architecture | PIC18 (8-bit) |
| Series | PIC® XLP™ 18J |
| Maximum CPU Frequency | 48 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 4 KB |
| Operating Voltage Range | 2.0 V to 3.6 V |
| I/O Pins | 36 |
| USB Interface | USB 2.0 Full-Speed (Device/Host/OTG) |
| ADC | 10-bit |
| 패키지 | 44-QFN (8x8 mm) with exposed pad |
| 실장 유형 | Surface Mount |
| 동작 온도 | -40C to +85C (industrial) |
| MSL 레벨 | 3 (168 hours) |
| RoHS 상태 | Compliant |
| Lead-Free | Yes |
PIC18LF46J50-I/ML 핀 구성
| 핀 1 | RB5/KBI1/PGM — PORTB bit 5 / Keyboard interrupt / ICSP programming |
| 핀 2 | RB4/AN11/KBI0 — PORTB bit 4 / ADC input 11 / Keyboard interrupt |
| 핀 3 | RB3/AN9/CCP2 — PORTB bit 3 / ADC input 9 / Capture/Compare/PWM |
| 핀 4 | RB2/AN8/CCP1 — PORTB bit 2 / ADC input 8 / Capture/Compare/PWM |
| 핀 5 | RB1/AN10 — PORTB bit 1 / ADC input 10 |
| 핀 6 | RB0/AN12/FLT0 — PORTB bit 0 / ADC input 12 / PWM fault input |
| 핀 7 | VSS — Ground reference |
| 핀 8 | VDD — Positive power supply (2.0V to 3.6V) |
| 핀 9 | RA0/AN0 — PORTA bit 0 / ADC input 0 |
| 핀 10 | RA1/AN1 — PORTA bit 1 / ADC input 1 |
| 핀 11 | RA2/AN2/VREF- — PORTA bit 2 / ADC input 2 / ADC reference minus |
| 핀 12 | RA3/AN3/VREF+ — PORTA bit 3 / ADC input 3 / ADC reference plus |
| 핀 13 | RA4/AN4 — PORTA bit 4 / ADC input 4 |
| 핀 14 | RA5/AN5 — PORTA bit 5 / ADC input 5 |
| 핀 15 | VSS — Ground reference |
| 핀 16 | OSC1/RA7 — Oscillator input / PORTA bit 7 |
| 핀 17 | OSC2/RA6 — Oscillator output / PORTA bit 6 |
| 핀 18 | RC0/SOSCO — PORTC bit 0 / Secondary oscillator output |
| 핀 19 | RC1/SOSCI — PORTC bit 1 / Secondary oscillator input |
| 핀 20 | RC2/CCP2 — PORTC bit 2 / Capture/Compare/PWM 2 |
| 핀 21 | RC3/SCL — PORTC bit 3 / I2C clock |
| 핀 22 | RC4/SDA — PORTC bit 4 / I2C data |
| 핀 23 | RC5 — PORTC bit 5 |
| 핀 24 | RC6/TX1/CK1 — PORTC bit 6 / UART1 TX / USART clock |
| 핀 25 | RC7/RX1/DT1 — PORTC bit 7 / UART1 RX / USART data |
| 핀 26 | VUSB — USB transceiver internal 3.3V regulator output (bypass cap required) |
| 핀 27 | D- — USB differential data minus |
| 핀 28 | D+ — USB differential data plus |
| 핀 29 | RD0/PSP0 — PORTD bit 0 / Parallel slave port data |
| 핀 30 | RD1/PSP1 — PORTD bit 1 / Parallel slave port data |
| 핀 31 | RD2/PSP2 — PORTD bit 2 / Parallel slave port data |
| 핀 32 | RD3/PSP3 — PORTD bit 3 / Parallel slave port data |
| 핀 33 | RD4/PSP4 — PORTD bit 4 / Parallel slave port data |
| 핀 34 | RD5/PSP5 — PORTD bit 5 / Parallel slave port data |
| 핀 35 | RD6/PSP6 — PORTD bit 6 / Parallel slave port data |
| 핀 36 | RD7/PSP7 — PORTD bit 7 / Parallel slave port data |
| 핀 37 | RE0/RD — PORTE bit 0 / Parallel slave port read |
| 핀 38 | RE1/WR — PORTE bit 1 / Parallel slave port write |
| 핀 39 | RE2/CS — PORTE bit 2 / Parallel slave port chip select |
| 핀 40 | VDD — Positive power supply (2.0V to 3.6V) |
| 핀 41 | VSS — Ground reference |
| 핀 42 | RF1/AN6/C2OUT — PORTF bit 1 / ADC input 6 / Comparator 2 output |
| 핀 43 | RF2/AN7/C1OUT — PORTF bit 2 / ADC input 7 / Comparator 1 output |
| 핀 44 | EP — Exposed thermal pad - must be soldered to ground plane |
일반적인 애플리케이션
PIC18LF46J50-I/ML 적합 용도: 6 애플리케이션s: USB HID Peripheral (Keyboard/Mouse), USB-to-UART Bridge / CDC Device, Battery-Powered IoT Sensor Node, USB Barcode Scanner / Data Logger, USB Audio Class Device (Headset Dongle), USB Firmware Bootloader Host.
USB HID Peripheral (Keyboard/Mouse)
The PIC18LF46J50-I/ML is an ideal host for USB HID peripherals because of its integrated USB 2.0 full-speed transceiver, 64 KB Flash for HID descriptors and keymap tables, and 36 GPIO pins for matrix key scanning. At 48 MHz the CPU executes the USB polling interval with substantial headroom for key debouncing, LED animation, and backlight PWM. The nanoWatt XLP deep-sleep mode lets a wireless keyboard sleep in nanoamp currents and wake on interrupt to extend battery life across months of standby.
추천
USB-to-UART Bridge / CDC Device
The integrated USB 2.0 full-speed transceiver and 4 KB RAM make the PIC18LF46J50-I/ML a natural fit for USB-to-UART bridge adapters and CDC virtual COM port designs. The 48 MHz core handles USB protocol stack plus UART DMA streaming with minimal CPU loading. Compared to dedicated bridge ICs, this part offers programmable baud rates, custom IO commands, and the ability to upgrade firmware in-field via the USB bootloader, all in a compact 44-QFN footprint ideal for USB dongles.
추천
Battery-Powered IoT Sensor Node
With 2.0-3.6V operation and nanoWatt XLP deep-sleep current in the nanoamp range, the PIC18LF46J50-I/ML runs directly from a single Li-ion or 2xAA battery cell while still supporting USB when plugged in for charging or data transfer. The 10-bit ADC samples up to 13 analog sensor channels, and 64 KB Flash accommodates application firmware plus USB stacks. The 36 GPIO pins handle multiple sensors, I2C peripherals, and a status LED, all in an 8x8 mm QFN suitable for wearables and remote sensor pods.
추천
USB Barcode Scanner / Data Logger
The PIC18LF46J50-I/ML serves as the controller for USB-connected barcode scanners and portable data loggers, leveraging its 64 KB Flash for image-decoding firmware and 4 KB RAM for scan buffering. The integrated USB device interface presents as a HID keyboard or CDC serial device to the host without external ICs, reducing BOM and PCB area. Industrial -40C to +85C temperature rating supports warehouse and cold-chain logistics deployments.
추천
USB Audio Class Device (Headset Dongle)
The PIC18LF46J50-I/ML can implement USB Audio Class 1.0 device firmware for low-cost USB headset adapters, with the 48 MHz core providing enough bandwidth for isochronous USB audio at 16-bit/48 kHz alongside basic volume control logic. The 44-QFN exposed pad handles thermal dissipation cleanly in a sealed dongle enclosure. GPIO pins drive mute buttons and status LEDs without external glue logic.
추천
USB Firmware Bootloader Host
The PIC18LF46J50-I/ML is commonly deployed as a USB host bootloader for in-field firmware updates of PIC18-based sensor or motor nodes. The integrated USB host/OTG controller plus 64 KB Flash holds both the USB stack and the bootloader image simultaneously, while the 10-bit ADC verifies supply rails before handoff to the application. The wide 2.0-3.6V supply range lets the same hardware run from USB VBUS or a battery.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC18LF46J50-I/ML — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC18LF46J50T-I/ML | PIC18F46J50-I/ML | PIC18LF46J50-I/PT | PIC18LF46J53-I/ML | PIC18LF46K40-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-TQFP - same die, different land pattern | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 64 MHz |
| Program Flash | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Data RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 16 KB |
| USB 2.0 Interface | Integrated FS Device/Host/OTG | Integrated FS - same | Integrated FS - same | Integrated FS - same | Integrated FS - same | None (K-series drop USB) |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 12-bit |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 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 |
주요 차별점
- Integrated USB 2.0 full-speed transceiver with on-chip pull-up (vs PIC18LF46K40-I/ML)
- True drop-in tape-and-reel production variant in same 44-QFN package (vs PIC18LF46J50T-I/ML)
- nanoWatt XLP deep-sleep current for battery-powered USB designs (vs PIC18LF46K40-I/ML)
설계 노트
The 44-QFN (ML) package requires the central exposed thermal pad to be soldered to a continuous ground plane with at least 9 thermal vias (0.3 mm drill, 0.6 mm pitch) for proper thermal and electrical performance. Per the Microchip PIC18LF46J50 datasheet section on package guidelines, missing vias under the EP will void the thermal rating and can cause erratic oscillator behavior. Keep the GND pour unbroken under the EP and stitch it to the bottom ground plane.
Place the 100 nF VDD/VSS decoupling capacitors as close as possible (less than 3 mm trace length) to each power pin pair. Add a 4.7 uF bulk capacitor on the main VDD rail and a 220 nF capacitor on the VUSB pin output, as recommended in the Microchip PIC18LF46J50 datasheet USB hardware design notes. The USB D+ and D- traces must be 90 ohm differential, length-matched within 2 mm, and routed over an unbroken ground plane to meet USB 2.0 full-speed signal-integrity requirements.
Do not float the VUSB pin - it must have a decoupling capacitor even if USB is not used, otherwise the internal 3.3V USB regulator can oscillate and inject noise into VDD. When USB is unused, tie D+ and D- to ground through 10k resistors. The LF suffix denotes the 2.0-3.6V low-voltage variant; do not substitute a non-LF J50 without re-checking brown-out and voltage-tolerance settings for battery-powered designs.
규정 준수 정보
RoHS and REACH compliance per Microchip product page; lead-free reflow profile per JEDEC J-STD-020. The I-temp (-40C to +85C) variant is industrial-grade; no AEC-Q100 automotive grade is available for this exact MPN.
