PIC18F45K22-I/PT - 8-Bit 64MHz 32KB Flash MCU | Microchip
N.º da peça: PIC18F45K22-I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.95 | $4,95 |
| 10 | $4.32 | $43,20 |
| 100 | $3.71 | $371,00 |
| 500 | $3.3 | $1.650,00 |
| 1.000 | $2.96 | $2.960,00 |
| 3.000 | $2.65 | $7.950,00 |
PIC18F45K22-I/PT Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic control, low power consumption, and tight peripheral integration. Within the broader semiconductor taxonomy, an MCU is a type of embedded processor; PIC18F devices sit in the mid-range PIC performance tier, above baseline PIC16 parts but below the dsPIC Digital Signal Controller family. They are widely used for sensor interfacing, human-machine interface control, motor drivers, and IoT edge nodes.
Key features of the PIC18F45K22-I/PT include a 64 MHz maximum clock with an internal 16 MHz oscillator, an integrated 10-bit ADC, multiple PWM modules, EUSART, MSSP (SPI/I2C), and self-programmable Flash. nanoWatt XLP technology delivers sleep currents as low as 20 nA, enabling multi-year battery life on a single cell. The wide 1.8 V to 5.5 V supply range simplifies designs that must operate from 2x AA, lithium, or regulated 3.3 V rails.
Typical applications include industrial sensor hubs, consumer white goods, USB/HID peripherals, automotive body controllers, medical handheld instruments, and battery-powered IoT sensor nodes. The device's deterministic interrupt latency and rich peripheral set make it particularly attractive in real-time control loops. Designers also benefit from a free MPLAB X IDE and the MPLAB Snap or PICkit programmer/debugger ecosystem.
When laying out a board, place decoupling capacitors as close as possible to VDD/VSS pairs and reserve a clean ground pour under the exposed thermal pad area to keep ADC measurements stable. This page synthesizes distributor pricing, drop-in same-package alternatives, and engineering design notes that go beyond the manufacturer datasheet alone.
Alternativas drop-in para PIC18F45K22-I/PT — 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 PIC18F45K22-I/PT (mesmo formato e footprint) — diferindo em Package, ADC, Timers, Operating Temperature, Program Memory (Flash).
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F46K22-I/PT
✅ Drop-In✓ Em estoque
$2.32 / unidade
Ver ficha técnica →PIC18F45Q10-I/PT
✅ Drop-In✓ Em estoque
$1.39 / unidade
Ver ficha técnica →PIC18F44K22-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F45K22-I/P
✅ Drop-In✓ Em estoque
$2.1 / unidade
Ver ficha técnica →PIC18F46J11-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F4580-I/P
✅ Drop-In✓ Em estoque
$5.1 / unidade
Ver ficha técnica →PIC18F45K22-I/PT Classificações máximas e características elétricas
| Product Family | PIC18F K-series, nanoWatt XLP |
| Core Architecture | 8-bit PIC18 |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data Memory (SRAM) | 1536 bytes |
| Data Memory (EEPROM) | 256 bytes |
| Maximum CPU Frequency | 64 MHz |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit, up to 30 channels |
| Timers | Multiple 8/16-bit timers (TMR0/1/2/3/4/5/6) |
| Communication Peripherals | EUSART, MSSP (SPI/I2C) |
| PWM Modules | Up to 4 CCP/ECCP |
| Comparators | Yes (on select I/O) |
| Encapsulamento | 44-pin TQFP (PT) 10x10 mm |
| Temperatura de operação | -40C to +85C (Industrial, -I) |
| Tipo de montagem | Surface Mount |
| Nível MSL | 3 (168 hours) |
| Lead Free / RoHS | Yes, RoHS compliant |
| nanoWatt XLP Sleep Current | ~20 nA typical |
| Debug Interface | ICSP (In-Circuit Serial Programming) via MPLAB tools |
Configuração de pinos do PIC18F45K22-I/PT
| Pino 1 | RB5 — Digital I/O port B bit 5 / KBI input |
| Pino 2 | RB4 — Digital I/O port B bit 4 / KBI input |
| Pino 3 | RB3 — Digital I/O port B bit 3 / analog channel |
| Pino 4 | RB2 — Digital I/O port B bit 2 / analog channel |
| Pino 5 | RB1 — Digital I/O port B bit 1 / analog channel |
| Pino 6 | RB0 — Digital I/O port B bit 0 / INT0 interrupt |
| Pino 7 | RE3 — Digital I/O port E bit 3 / MCLR input only |
| Pino 8 | RA0 — Digital I/O port A bit 0 / analog channel AN0 |
| Pino 9 | RA1 — Digital I/O port A bit 1 / analog channel AN1 |
| Pino 10 | RA2 — Digital I/O port A bit 2 / analog channel AN2 |
| Pino 11 | RA3 — Digital I/O port A bit 3 / analog channel AN3 |
| Pino 12 | RA4 — Digital I/O port A bit 4 / analog channel AN4 |
| Pino 13 | RA5 — Digital I/O port A bit 5 / analog channel AN5 |
| Pino 14 | RA6 — Digital I/O port A bit 6 / oscillator output |
| Pino 15 | RA7 — Digital I/O port A bit 7 / oscillator input |
| Pino 16 | VSS — Ground reference |
| Pino 17 | VDD — Positive supply voltage (1.8V-5.5V) |
| Pino 18 | RC0 — Digital I/O port C bit 0 / analog channel |
| Pino 19 | RC1 — Digital I/O port C bit 1 / analog channel |
| Pino 20 | RC2 — Digital I/O port C bit 2 / analog channel |
| Pino 21 | RC3 — Digital I/O port C bit 3 / analog channel |
| Pino 22 | RC4 — Digital I/O port C bit 4 / analog channel |
| Pino 23 | RC5 — Digital I/O port C bit 5 / analog channel |
| Pino 24 | RC6 — Digital I/O port C bit 6 / TX |
| Pino 25 | RC7 — Digital I/O port C bit 7 / RX |
| Pino 26 | RD0 — Digital I/O port D bit 0 |
| Pino 27 | RD1 — Digital I/O port D bit 1 |
| Pino 28 | RD2 — Digital I/O port D bit 2 |
| Pino 29 | RD3 — Digital I/O port D bit 3 |
| Pino 30 | RD4 — Digital I/O port D bit 4 |
| Pino 31 | RD5 — Digital I/O port D bit 5 |
| Pino 32 | RD6 — Digital I/O port D bit 6 |
| Pino 33 | RD7 — Digital I/O port D bit 7 |
| Pino 34 | VSS — Ground reference |
| Pino 35 | VDD — Positive supply voltage (1.8V-5.5V) |
| Pino 36 | RE0 — Digital I/O port E bit 0 / analog channel |
| Pino 37 | RE1 — Digital I/O port E bit 1 / analog channel |
| Pino 38 | RE2 — Digital I/O port E bit 2 / analog channel |
| Pino 39 | AVDD — Analog positive supply voltage |
| Pino 40 | AVSS — Analog ground reference |
| Pino 41 | RB7 — Digital I/O port B bit 7 / KBI input |
| Pino 42 | RB6 — Digital I/O port B bit 6 / KBI input / ICSP clock |
| Pino 43 | RB5 — Digital I/O port B bit 5 / KBI input / ICSP data |
| Pino 44 | VPP/MCLR — Programming voltage input / Master Clear reset |
Aplicações típicas
PIC18F45K22-I/PT é adequado para 6 aplicaçãos: Industrial Sensor Hub / PLC Module, Consumer Appliance Control (White Goods), Battery-Powered IoT Sensor Node, USB/HID Human Interface Device, Automotive Body and Interior Electronics, Medical Handheld Instrumentation.
Industrial Sensor Hub / PLC Module
The PIC18F45K22-I/PT fits industrial sensor hubs because it integrates a 10-bit ADC with up to 30 input channels, allowing simultaneous sampling of analog process variables (temperature, pressure, flow) with deterministic 8-bit interrupt latency under 200 ns at 64 MHz. Its 1.8 V to 5.5 V VDD range supports both 3.3 V and 24 V-derived 5 V rails with the same firmware, while 32 KB Flash holds small Modbus RTU or proprietary field-bus stacks. nanoWatt XLP sleep currents near 20 nA make it ideal for solar-powered remote telemetry units that wake periodically to transmit sensor readings.
Recomendado
Consumer Appliance Control (White Goods)
In consumer white goods such as washing machines, dishwashers, and induction cooktops, the PIC18F45K22-I/PT provides a deterministic 8-bit control loop with the EUSART for UI panel communication, up to 4 CCP/ECCP PWM modules for motor or element control, and a wide 1.8 V to 5.5 V supply that accepts unregulated rectified mains-derived rails. Its 32 KB Flash accommodates state-machine control firmware plus diagnostic logging, while the 256 bytes EEPROM retain user settings (mode, calibration) through power cycles. The 44-pin TQFP and industrial -40 C to +85 C temperature grade suit sealed appliance compartments with limited airflow.
Recomendado
Battery-Powered IoT Sensor Node
The PIC18F45K22-I/PT serves long-life IoT sensor nodes thanks to its nanoWatt XLP technology, which delivers sleep currents near 20 nA - low enough for a single CR2032 coin cell to last several years in duty-cycled applications. The 32 KB Flash supports LoRaWAN or Zigbee MAC stacks plus sensor drivers, while the integrated 10-bit ADC handles analog sensors without external converters. Designers benefit from the 1.8 V minimum VDD enabling direct coin-cell operation, and the MSSP (SPI/I2C) interfaces easily to common IoT peripherals like the MCP9808 temperature sensor.
Recomendado
USB/HID Human Interface Device
For USB HID peripherals such as keyboards, mice, game controllers, and custom HID input panels, the PIC18F45K22-I/PT runs the 64 MHz CPU needed for low-latency HID polling and the MSSP peripheral handles SPI-based scanners or LED matrix drivers. The wide 5 V tolerance simplifies direct bus-powered designs, and 32 KB Flash fits HID report descriptors plus firmware update bootloader logic. The 256-byte EEPROM stores per-unit calibration, while the 44-pin TQFP exposes enough GPIO for scan matrix decoding and RGB underglow channels.
Recomendado
Automotive Body and Interior Electronics
Within automotive body controllers - lighting, mirror adjustment, seat controllers, HVAC panels - the PIC18F45K22-I/PT provides an automotive-suitable 8-bit platform with industrial -40 C to +85 C operation and robust peripheral set. The 32 KB Flash accommodates CAN-capable firmware stacks, while the EUSART interfaces to LIN bus transceivers common in body-electronics modules. The 44-pin TQFP surface-mount package fits space-constrained interior modules, and the nanoWatt XLP sleep mode supports key-off current budgets of a few hundred microamps for quiescent loads. Note: AEC-Q100 qualification requires the automotive-grade ordering code; the standard -I/PT part is industrial-grade only.
Recomendado
Medical Handheld Instrumentation
For medical handheld instruments like glucose meters, pulse oximeters, and portable therapy devices, the PIC18F45K22-I/PT combines a deterministic 8-bit core with low-noise ADC performance and nanoWatt XLP sleep currents that extend battery life. The 32 KB Flash holds device firmware and calibration tables, the 256-byte EEPROM stores patient profiles or measurement logs, and the wide 1.8 V to 5.5 V VDD accepts both 3 V lithium and 5 V USB-derived supplies. Designers benefit from a mature IEC 60730 Class B safety software library from Microchip to accelerate compliance testing.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F45K22-I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F46K22-I/PT | PIC18F45Q10-I/PT | PIC18F44K22-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm |
| Flash Program Memory | 32 KB | 64 KB | 32 KB | 16 KB |
| SRAM | 1536 bytes | 3896 bytes | 2048 bytes | 768 bytes |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| nanoWatt XLP Low Power | Yes (~20 nA sleep) | Yes (~20 nA sleep) | Yes (CIP-based) | Yes (~20 nA sleep) |
| Recommended for New Designs | Legacy / active | Legacy / active | Yes (migration target) | Legacy / active |
| Unit Price (qty 1, USD, as of 2026-09-27) | 4.95 | 5.45 | 4.85 | 4.25 |
Principais diferenciais
- Mature 8-bit PIC18 platform with nanoWatt XLP sleep currents near 20 nA (vs PIC18F4580-I/P)
- Pin-compatible migration path to PIC18F45Q10 family (vs PIC18F44K22-I/PT)
- Wide 1.8 V to 5.5 V VDD range (vs PIC18F46J11-I/PT)
Notas de projeto
Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pin pair (pins 17 and 35), with an additional 10 uF bulk capacitor on the main VDD rail. nanoWatt XLP sleep current measurements are sensitive to VDD ripple; keep the analog and digital supplies well-isolated. When using the internal 16 MHz HFINTOSC, PLL multiplier is enabled, and active current is approximately 5-8 mA at full CPU load per the datasheet DC characteristics table.
The 44-pin TQFP (10x10 mm) package has a 0.8 mm pitch. Reserve a continuous ground pour under the device and route analog input traces (AN0-AN15) as far from digital switching signals as possible to maintain ADC accuracy. For USB or CAN designs, place the 4.7 kohm pull-up on D+ or CAN termination as close to the MCU as trace length allows; mismatch introduces signal-integrity violations.
The MCLR/VPP pin (pin 44) on the PIC18F45K22-I/PT is shared with the programming voltage input - never tie it directly to VDD without a 10 kohm pull-up, otherwise in-circuit serial programming will not function. Also note that the -I/PT part is industrial-grade (-40 C to +85 C); if your design runs above 85 C, switch to the -E/PT (extended) or automotive-grade variant. The ADC reference voltage source selection affects conversion accuracy; tie VREF+/VREF- to clean supplies when using external references.
At full CPU load (64 MHz) and 5 V VDD, the PIC18F45K22-I/PT consumes roughly 20-30 mW total - well within the thermal envelope of the 44-TQFP without additional heatsinking. However, the 10-bit ADC accuracy degrades above +70 C; budget for 1 LSB drift or use the internal bandgap reference with periodic calibration in environments approaching the +85 C limit per the datasheet ADC specifications.
Informações de conformidade
RoHS compliant per Microchip product page. The -I/PT suffix indicates industrial-grade (-40 C to +85 C); AEC-Q100 automotive-grade variants have a different ordering code (e.g., -VAO). The PIC18F45K22 remains in active production per Microchip's website as of 2026-09-27.