PIC18F45K50T-I/MV - 8-Bit 48MHz USB MCU 32KB Flash UQFN-40
N.º da peça: PIC18F45K50T-I/MV ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.62 | $3,62 |
| 10 | $3.27 | $32,70 |
| 100 | $2.92 | $292,00 |
| 500 | $2.66 | $1.330,00 |
| 1.000 | $2.4 | $2.400,00 |
| 3.300 | $2.18 | $7.194,00 |
PIC18F45K50T-I/MV Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, RAM, non-volatile program and data memory, and peripherals. Within the broader taxonomy, the PIC18F45K50 family sits at 8-bit PIC -> PIC18 microcontrollers -> Microcontroller -> Microprocessor and logic -> semiconductor. The 8-bit PIC18 RISC core executes most instructions in a single 200 ns cycle (at 48 MHz internal clock), giving up to 16 MIPS, which is sufficient for USB CDC/HID, sensor conditioning, and small protocol stacks. The XLP feature set allows standby currents in the nanoamp range, making the family a logical choice when battery life dominates the BOM.
Key features include 32 KB (16K x 16) self read/write flash, 2 KB data SRAM, 256 bytes EEPROM, 35 digital I/O, USB 2.0 full-speed with on-chip transceiver, internal 48 MHz oscillator with Active Clock Tuning from the USB host, 10-bit ADC up to 25 channels, two comparators, enhanced CCP with PWM, multiple communication peripherals (UART, SPI, I2C), and an operating voltage range of 2.5 V to 5.5 V (F-version, F25-F50 series). The UQFN-40 (MV) 5x5 mm package with exposed thermal pad reduces PCB area versus TQFP-44 while maintaining pin functionality for the standard PIC18F4x family pinout.
The architecture leverages Microchip's enhanced mid-range core with hardware multiply, a 16-bit instruction word, and a single 32-level hardware stack. Active Clock Tuning trims the internal 48 MHz oscillator against the USB host 1 kHz SOF reference, eliminating the need for an external crystal in USB designs and improving BOM cost and EMI. The on-chip USB 2.0 transceiver supports CDC, HID, MSD and proprietary classes, while XLP adds deep sleep, RTC, and power-managed peripherals for sleep currents below 100 nA typical.
Typical applications include USB-to-UART bridges, USB HID/HMI devices such as custom keyboards and mice, USB sensor dongles, low-power data loggers, learning platforms (the K50 is widely used in Microchip's low-pin-count USB dev kits), home automation nodes, and industrial sensor interfaces with USB diagnostics. The wide 2.5 V to 5.5 V range also supports lithium-ion battery packs and 5 V industrial buses.
Designers should note that the 'T' suffix denotes Tape & Reel packaging, the 'I' is the industrial -40 C to +85 C temperature grade, and 'MV' indicates the UQFN-40 5x5 package. When migrating from the PIC18F4550, configuration bit locations and a few register names differ; refer to Microchip's migration document for software changes.
This page synthesizes distributor pricing, drop-in same-family alternatives in the same UQFN-40 package, and practical design notes not found in the manufacturer datasheet, with all parameters traceable to Microchip documentation and current distributor listings as of 2026-09-28.
Alternativas drop-in para PIC18F45K50T-I/MV — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC18F45K50T-I/MV (mesmo formato e footprint) — diferindo em Timers, Package, ADC, Operating Temperature, Maximum CPU Frequency.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F45K50-I/MV
✅ Drop-In✓ Em estoque
$2.2 / unidade
Ver ficha técnica →PIC18F45K42-I/MV
✅ Drop-In✓ Em estoque
$1.18 / unidade
Ver ficha técnica →PIC18F45K22-I/MV
✅ Drop-In✓ Em estoque
$2.05 / unidade
Ver ficha técnica →PIC18LF45K50T-I/MV
✅ Drop-In✓ Em estoque
$1.85 / unidade
Ver ficha técnica →PIC18F45K42T-I/MV
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F44K22-I/MV
✅ Drop-In✓ Em estoque
$1.55 / unidade
Ver ficha técnica →PIC18F45K50T-I/MV Classificações máximas e características elétricas
| Core Architecture | 8-bit PIC18 RISC |
| Frequência máxima de clock | 48 MHz |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data SRAM | 2 KB |
| Data EEPROM | 256 Bytes |
| Supply Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 35 |
| USB Module | USB 2.0 Full-Speed with on-chip transceiver |
| Internal Oscillator | 48 MHz with Active Clock Tuning (ACT) |
| ADC | 10-bit, up to 25 channels |
| Comparators | 2 |
| Enhanced CCP / PWM | Yes (PWM + Capture + Compare) |
| Timers | Timer0/1/2/3 + RTCC + WDT |
| Communication | UART, SPI, I2C, USB |
| Hardware Multiply | 8x8 single-cycle |
| Temperatura de operação | -40 C to +85 C (Industrial, 'I') |
| Encapsulamento | 40-pin UQFN (MV) 5x5 mm with EP |
| Packaging Form | Tape & Reel ('T' suffix) |
| Status RoHS | Compliant |
Configuração de pinos do PIC18F45K50T-I/MV
| Pino 1 | RB7/ICSPDAT — Digital I/O RB7 / ICSP data line |
| Pino 2 | RB6/ICSPCLK — Digital I/O RB6 / ICSP clock line |
| Pino 3 | RB5 — Digital I/O RB5 |
| Pino 4 | RB4 — Digital I/O RB4 |
| Pino 5 | RB3 — Digital I/O RB3 |
| Pino 6 | RB2 — Digital I/O RB2 |
| Pino 7 | RB1 — Digital I/O RB1 |
| Pino 8 | RB0 — Digital I/O RB0 |
| Pino 9 | VUSB3V3 — Internal USB 3.3V regulator output (decoupling) |
| Pino 10 | D- — USB D- line |
| Pino 11 | D+ — USB D+ line |
| Pino 12 | VDD — Positive supply voltage (2.5V-5.5V) |
| Pino 13 | VSS — Ground reference |
| Pino 14 | RA7/OSC1/CLKI — Digital I/O RA7 / oscillator input |
| Pino 15 | RA6/OSC2/CLKO — Digital I/O RA6 / oscillator output |
| Pino 16 | RA5 — Digital I/O RA5 |
| Pino 17 | RA4 — Digital I/O RA4 |
| Pino 18 | RA3 — Digital I/O RA3 |
| Pino 19 | RA2 — Digital I/O RA2 |
| Pino 20 | RA1 — Digital I/O RA1 |
| Pino 21 | RA0 — Digital I/O RA0 |
| Pino 22 | VSS — Ground reference |
| Pino 23 | RC7 — Digital I/O RC7 |
| Pino 24 | RC6 — Digital I/O RC6 |
| Pino 25 | RC5 — Digital I/O RC5 |
| Pino 26 | RC4 — Digital I/O RC4 |
| Pino 27 | RC3 — Digital I/O RC3 |
| Pino 28 | RC2 — Digital I/O RC2 |
| Pino 29 | RC1 — Digital I/O RC1 |
| Pino 30 | RC0 — Digital I/O RC0 |
| Pino 31 | VSS — Ground reference |
| Pino 32 | RD7 — Digital I/O RD7 |
| Pino 33 | RD6 — Digital I/O RD6 |
| Pino 34 | RD5 — Digital I/O RD5 |
| Pino 35 | RD4 — Digital I/O RD4 |
| Pino 36 | RD3 — Digital I/O RD3 |
| Pino 37 | RD2 — Digital I/O RD2 |
| Pino 38 | RD1 — Digital I/O RD1 |
| Pino 39 | RD0 — Digital I/O RD0 |
| Pino 40 | RE3 — Digital I/O RE3 (MCLR optional) |
Aplicações típicas
PIC18F45K50T-I/MV é adequado para 6 aplicaçãos: USB to UART Bridge Dongle, USB HID Human Interface Device, USB Sensor Data Logger, Low-Power Wireless Sensor Node, Industrial USB Diagnostic Probe, Learning Platform and Educational MCU Kit.
USB to UART Bridge Dongle
The PIC18F45K50T-I/MV is a strong fit for compact USB-to-UART bridge dongles because its on-chip USB 2.0 full-speed transceiver and internal 48 MHz oscillator with Active Clock Tuning remove the need for an external crystal or PHY, shrinking BOM and PCB area. With 32 KB flash and 2 KB SRAM it comfortably runs Microchip's USB CDC stack plus the user's protocol glue. The 2.5 V to 5.5 V VDD range lets the same board power 3.3 V MCUs or 5 V legacy RS-232 chips through an external level shifter, while the 5x5 mm UQFN-40 leaves room for the USB-C connector and ESD protection on a 15x25 mm board.
Recomendado
USB HID Human Interface Device
For custom keyboards, mice, touch panels, and other USB HID peripherals, the PIC18F45K50T-I/MV delivers 16 MIPS at 48 MHz - plenty of bandwidth for HID class descriptors, button debouncing, and capacitive sensing via the CTMU/ADC channels. The 35 digital I/O pins allow scanning large matrix keypads without external muxes. Active Clock Tuning ensures USB compliance across the industrial -40 C to +85 C range without a crystal, while XLP nanoamp sleep modes extend battery operation for wireless HID dongles. The UQFN-40 5x5 mm package keeps the PCB small enough to fit inside a USB-A or USB-C plug body.
Recomendado
USB Sensor Data Logger
In USB sensor dongles for field data logging, the PIC18F45K50T-I/MV combines 32 KB flash for storing a Mass Storage Class (MSC) firmware plus FAT file-system code with its 10-bit ADC (up to 25 channels) to sample multiple analog sensors simultaneously. The 256 bytes of true EEPROM provides non-volatile configuration storage, while XLP nanoamp sleep currents between samples let a Li-ion cell run for months. The on-chip USB MSC stack (when paired with external SPI flash) makes the part well-suited for unattended environmental, vibration, or temperature loggers that pop up as removable drives on the host.
Recomendado
Low-Power Wireless Sensor Node
With XLP deep sleep currents below 100 nA and a 48 MHz active core, the PIC18F45K50T-I/MV is suitable for battery-powered sensor nodes that wake briefly to take measurements over I2C or SPI sensors, store data in flash, then return to sleep. The 2.5 V to 5.5 V VDD range supports a single Li-ion or 2xAA cells without LDO. Although this part is USB-equipped, designers frequently use the USB only for configuration/firmware updates and let the wireless block (an external sub-GHz or BLE module on the same SPI bus) handle RF. The UQFN-40 EP provides low-thermal-resistance dissipation for hot-spot-free always-remote nodes.
Recomendado
Industrial USB Diagnostic Probe
For industrial diagnostic probes and programmers, the PIC18F45K50T-I/MV offers 35 robust digital I/O pins tolerant of 5 V inputs and an industrial -40 C to +85 C operating range, ideal for factory-floor tools that interrogate field equipment. The enhanced CCP/PWM, multiple UART/SPI/I2C peripherals let the device bridge between RS-232/RS-485 sensors and a USB host without external logic. On-chip USB MSD/CDC/Vendor-class support makes the same firmware reusable for firmware flashing, log retrieval, or live diagnostics. The UQFN-40 EP aids in dissipating heat in always-on tool applications.
Recomendado
Learning Platform and Educational MCU Kit
The PIC18F45K50T-I/MV is widely used in Microchip's low-pin-count USB teaching kits because it offers a real USB stack, 32 KB flash, and 35 I/O at an accessible price point - perfect for learners writing their first CDC/HID firmware. The free MPLAB X IDE + XC8 compiler + MCC code configurator pipeline reduces friction, while on-chip debug via ICSP lets students step through code without extra tools. The UQFN-40 footprint is easy to lay out by hand on a 2-layer PCB, and the 2.5 V to 5.5 V range tolerates the regulator-less lab setups common in coursework. Many universities adopt the K50 family as a baseline 8-bit USB MCU.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F45K50T-I/MV — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F45K50-I/MV | PIC18F45K42-I/MV | PIC18F45K22-I/MV | PIC18LF45K50T-I/MV | PIC18F44K22-I/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | UQFN-40 (MV) 5x5 mm | UQFN-40 (MV) 5x5 mm - same | UQFN-40 (MV) 5x5 mm - same | UQFN-40 (MV) 5x5 mm - same | UQFN-40 (MV) 5x5 mm - same | UQFN-40 (MV) 5x5 mm - same |
| Core | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit |
| Max Clock Frequency | 48 MHz | 48 MHz | 64 MHz | 64 MHz | 48 MHz | 64 MHz |
| Program Flash | 32 KB | 32 KB | 64 KB | 16 KB | 32 KB | 16 KB |
| SRAM | 2 KB | 2 KB | 4 KB | 1.5 KB | 2 KB | 1.5 KB |
| EEPROM | 256 B | 256 B | 1 KB | 256 B | 256 B | 256 B |
| On-Chip USB 2.0 FS | Yes (with ACT) | Yes (with ACT) | Yes (with ACT) | No | Yes (with ACT) | No |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V |
| I/O Pins | 35 | 35 | 35 | 35 | 35 | 25 |
Principais diferenciais
- On-chip USB 2.0 full-speed with Active Clock Tuning eliminates external crystal (vs PIC18F45K22-I/MV)
- Same UQFN-40 footprint as the K42 family enables a clean upgrade path (vs PIC18F45K42-I/MV)
- Lower-voltage 1.8 V-3.6 V LF variant exists for battery designs (vs PIC18LF45K50T-I/MV)
Notas de projeto
The UQFN-40 (MV) package exposes a large thermal pad (EP) that MUST be soldered to a continuous ground pour on the top layer with at least 8 thermal vias (0.3 mm hole, 0.6 mm pad) stitching into the inner ground plane. Estimated: at 48 MHz with USB active the part draws roughly 10 mA; the EP keeps the junction well below 70 C with 1 oz copper. Insufficient EP soldering will cause thermal fold-back under USB bus-power stress.
D+ and D+ lines require 15 kV-rated ESD protection (e.g. USBLC6-2SC6) close to the connector; the internal USB transceiver has limited ESD. The VUSB3V3 pin is an internal 3.3V regulator output and MUST be decoupled with at least 1 uF X7R plus 100 nF NP0 per the datasheet. Configure Active Clock Tuning (ACT) when using only the internal oscillator - omitting it can cause USB compliance failures.
Place a 100 nF ceramic + 10 uF bulk capacitor within 5 mm of the VDD pin, with the 100 nF closest to the IC. For USB bus-powered designs, add a 4.7 uF tantalum or polymer on the upstream VBUS after the PTC fuse. The PIC18F45K50 has XLP sleep currents in the tens of nanoamps, so for battery applications use the deep-sleep + RTCC wake rather than WDT polling, and ensure all unused I/O are configured as outputs low.
The 48 MHz core clock generates harmonics up to 250 MHz; route the USB D+/D- traces as a 90 ohm differential pair with continuous ground underneath, no vias, and matching length within 150 mil. ICSP pins RB6/RB7 share the application I/O function; add 4.7 kohm pull-ups on these lines if the design needs bus-detect during ICSP programming. Keep crystal traces (if used) short and symmetric.
Informações de conformidade
RoHS and REACH compliant per Microchip product page. Industrial -40 C to +85 C temperature grade only; no AEC-Q100 qualified variant in this package.
