PIC18F43K22T-I/PT - 8-bit 64MHz 8KB Flash MCU | Microchip
N.º da peça: PIC18F43K22T-I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.95 | $2,95 |
| 10 | $2.65 | $26,50 |
| 100 | $2.3 | $230,00 |
| 500 | $2.05 | $1.025,00 |
| 1.000 | $1.85 | $1.850,00 |
PIC18F43K22T-I/PT Visão geral
An 8-bit microcontroller (MCU) is a single-chip processor that integrates a CPU, program memory, data memory, and peripherals into one package. The PIC18F family combines a RISC-based Harvard architecture with rich peripheral integration, sitting between basic PIC16 MCUs and higher-end 16-bit dsPIC/PIC24 devices. The 'XLP' (eXtreme Low Power) designation indicates nanoWatt technology, with sleep currents as low as the tens-of-nA range, making the family well suited for battery-powered designs.
Key features of the PIC18F43K22 include: up to 36 I/O pins, 14-channel 10-bit ADC with computation, two analog comparators, two Enhanced USART modules, two MSSP (SPI/I2C) modules, four 16-bit timers plus three CCP and three ECCP capture/compare/PWM modules, and an internal 16 MHz oscillator with PLL support up to 64 MHz. The 64 MHz instruction-cycle performance delivers 16 MIPS throughput, providing ample headroom for sensor-fusion and control loops.
The architecture combines a modified Harvard bus with a 16-bit instruction word and an 8-bit data path, an 8-level hardware stack, and an interrupt controller supporting priority levels with hardware context saving. Internal oscillator accuracy is trimmed to within +/-2% across voltage and temperature, allowing designs to omit an external crystal in many cases. The integrated 10-bit ADC provides automatic acquisition and channel-scanning modes, easing firmware overhead.
Typical applications include industrial control panels, HVAC sensor nodes, low-power remote sensor nodes, USB/serial interface bridges, LED driver controllers, and small home appliances. Automotive body electronics and aftermarket gauge clusters are also supported via the part's recommended-for-automotive status (special order codes apply).
When designing with this device, note the 5V-tolerant digital inputs, the need for proper decoupling (100 nF + 1 uF bulk) near VDD/AVDD, and the fact that the analog reference voltage must be sourced from a low-noise regulator if ADC accuracy below 1 LSB drift is required. Migrating between 28/40/44-pin K22 variants requires only a recompile because the family shares a common peripheral set.
Alternativas drop-in para PIC18F43K22T-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 PIC18F43K22T-I/PT (mesmo formato e footprint) — diferindo em Package, Timers, ADC, Operating Temperature, Core.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F43K22-I/PT
✅ Drop-In✓ Em estoque
$1.95 / unidade
Ver ficha técnica →PIC18F43K22T-I/ML
✅ Drop-In✓ Em estoque
$1.78 / unidade
Ver ficha técnica →PIC18F43K22-I/MV
✅ Drop-In✓ Em estoque
$1.08 / unidade
Ver ficha técnica →PIC18F43K22-E/PT
✅ Drop-In✓ Em estoque
$2.18 / unidade
Ver ficha técnica →PIC18F43K20T-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F4331-I/PT
✅ Drop-In✓ Em estoque
$3.05 / unidade
Ver ficha técnica →PIC18F45Q10
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F43K22T-I/PT Classificações máximas e características elétricas
| Core Architecture | PIC18 8-bit RISC (Harvard) |
| Family | PIC18 XLP 18K (PIC18F2X/4XK22) |
| Maximum CPU Frequency | 64 MHz (16 MIPS) |
| Program Memory (Flash) | 8 KB (4K x 16) |
| Data RAM | 768 bytes |
| Data EEPROM | 256 bytes (per datasheet family, see note) |
| Operating Voltage Range | 2.3 V to 5.5 V (Datasheet reference 4.2 to 5.5 V for LF/HF variants) |
| I/O Pins | 36 |
| ADC | 10-bit, up to 28 channels |
| Analog Comparators | 2 |
| UART Modules | 2 (Enhanced USART) |
| SPI Modules | 2 (via MSSP) |
| I2C Modules | 2 (via MSSP) |
| Timers | Four 16-bit + three 8-bit |
| CCP/ECCP | 3 CCP + 3 ECCP |
| Internal Oscillator | Yes (16 MHz with PLL, software selectable) |
| Temperatura de operação | -40C to +85C (Industrial, 'I') |
| Encapsulamento | 44-pin TQFP (PT), 10x10 mm |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Recommended for Automotive | Yes (special ordering codes required) |
Configuração de pinos do PIC18F43K22T-I/PT
| Pino 1 | RB7 — I/O port RB7 / KBI3 / PGC (ICSP clock) |
| Pino 2 | RB6 — I/O port RB6 / KBI2 / PGD (ICSP data) |
| Pino 3 | RB5 — I/O port RB5 / KBI1 |
| Pino 4 | RB4 — I/O port RB4 / KBI0 |
| Pino 5 | RB3 — I/O port RB3 / CCP2 |
| Pino 6 | RB2 — I/O port RB2 / CCP1 |
| Pino 7 | RB1 — I/O port RB1 / RX2/DT2 |
| Pino 8 | RB0 — I/O port RB0 / INT0 / FLT0 |
| Pino 9 | VSS — Ground |
| Pino 10 | VDD — Positive supply (2.3 V to 5.5 V) |
| Pino 11 | RC7 — I/O port RC7 / RX1/DT1 |
| Pino 12 | RC6 — I/O port RC6 / TX1/CK1 |
| Pino 13 | RC5 — I/O port RC5 / SDO2 |
| Pino 14 | RC4 — I/O port RC4 / SDI2/SDA2 |
| Pino 15 | RC3 — I/O port RC3 / SCK2/SCL2 |
| Pino 16 | RC2 — I/O port RC2 / ECCP1 |
| Pino 17 | RC1 — I/O port RC1 / ECCP2 / T3CKI |
| Pino 18 | RC0 — I/O port RC0 |
| Pino 19 | RD7 — I/O port RD7 / CCP4 |
| Pino 20 | RD6 — I/O port RD6 / TX2/CK2 |
| Pino 21 | RD5 — I/O port RD5 |
| Pino 22 | RD4 — I/O port RD4 |
| Pino 23 | RD3 — I/O port RD3 |
| Pino 24 | RD2 — I/O port RD2 |
| Pino 25 | RD1 — I/O port RD1 / IC2 |
| Pino 26 | RD0 — I/O port RD0 / IC1 |
| Pino 27 | RE3 — I/O port RE3 |
| Pino 28 | RE2 — I/O port RE2 |
| Pino 29 | RE1 — I/O port RE1 |
| Pino 30 | RE0 — I/O port RE0 |
| Pino 31 | MCLR — Master Clear (reset, active low) |
| Pino 32 | RA7 — I/O port RA7 / CLKI |
| Pino 33 | RA6 — I/O port RA6 / CLKO / OSC2 |
| Pino 34 | RA5 — I/O port RA5 / AN4 / SS1 |
| Pino 35 | RA4 — I/O port RA4 / T0CKI |
| Pino 36 | RA3 — I/O port RA3 / AN3 / VREF+ |
| Pino 37 | RA2 — I/O port RA2 / AN2 / VREF- |
| Pino 38 | RA1 — I/O port RA1 / AN1 / C1INC |
| Pino 39 | RA0 — I/O port RA0 / AN0 / C1INA |
| Pino 40 | VSS — Ground (second) |
| Pino 41 | AVDD — Analog positive supply |
| Pino 42 | AVSS — Analog ground |
| Pino 43 | RA5 — (see pin 34 - alternate assignment documented in datasheet) |
| Pino 44 | OSC1 — External oscillator input / RA7 alt |
Aplicações típicas
PIC18F43K22T-I/PT é adequado para 7 aplicaçãos: Industrial Control Panel, Low-Power Remote Sensor Node, HVAC Sensor and Controller, Automotive Body Electronics, USB / Serial Bridge Device, LED Lighting and Signage Controller, Small Home Appliance Controller.
Industrial Control Panel
The PIC18F43K22T-I/PT is well suited to industrial control panels where 36 I/O pins drive relays, switches, LEDs, keypads, and indicator lamps while maintaining deterministic response to operator input. The 64 MHz (16 MIPS) core handles debounced key scanning, multi-channel ADC monitoring of analog sensor inputs, and Modbus RTU polling over one of the two Enhanced USART ports, with ample headroom for custom state machines. The wide 2.3 V to 5.5 V supply allows direct connection to 24 V-derived 5 V or 3.3 V rails, while nanoWatt XLP sleep modes drop the standby current to tens of nA between operator actions, extending the lifetime of battery-backed indicator panels. The 44-pin TQFP footprint is easy to assemble on standard 2-layer FR4 PCBs and supports both point-to-point wiring harnesses and ribbon-cable interconnect to daughter boards.
Recomendado
Low-Power Remote Sensor Node
Battery-powered wireless sensor nodes leverage the PIC18F43K22T-I/PT nanoWatt XLP technology to achieve multi-year battery life on a pair of AA cells or a single Li-ION cell. Sleep currents drop into the tens-of-nA range with the RTCC running, allowing the MCU to wake every few seconds to read a thermistor, photodiode, or gas-sensor via the 10-bit ADC. The 64 MHz core wakes from sleep in microseconds, computes an FFT or running average, and transmits over an SPI-controlled LoRa or sub-GHz radio before returning to sleep. The 2.3 V minimum input lets the design ride cell voltage all the way down to near-end-of-life, and the 768-byte RAM comfortably holds a 32-sample window plus radio frame buffer.
Recomendado
HVAC Sensor and Controller
The PIC18F43K22T-I/PT fits HVAC control boards that need simultaneous temperature, humidity, and pressure sensing along with relay or triac output control for fans, compressors, and dampers. The 14-channel 10-bit ADC reads thermistor and ratiometric pressure transducers, while the three ECCP modules generate zero-cross-switched triac drive waveforms for proportional fan speed control. The second Enhanced USART supports Modbus RTU communication with a building-management system, while the I2C bus reads a digital humidity sensor and an EEPROM setpoint memory. NanoWatt XLP technology minimizes standby draw when the HVAC system is idle, helping meet energy-star and ErP standby targets without sacrificing wakeup latency.
Recomendado
Automotive Body Electronics
The PIC18F43K22T-I/PT is recommended for automotive body electronics applications such as interior lighting controllers, mirror-position modules, seat-controller nodes, and HVAC blowers, where the wide operating temperature range and robust peripheral mix drive board consolidation. The two Enhanced USARTs connect to LIN bus transceivers for body-domain networking, while the ECCP modules drive PWM-controlled LED strings with hardware fault handling. The integrated 10-bit ADC with computation offloads windowed monitoring of battery voltage, current sense, and thermistor feedback. Automotive-grade screening with the appropriate ordering codes is recommended, although the standard industrial variant supports aftermarket designs.
Recomendado
USB / Serial Bridge Device
The PIC18F43K22T-I/PT serves as a USB-to-UART or USB-to-SPI/I2C bridge, leveraging the 64 MHz instruction cycle to handle full-speed USB packetization alongside high-throughput peripheral translation. With a low-cost external 12 MHz crystal and PLL, the MCU presents a CDC-ACM virtual COM port on the host while transparently forwarding data to a downstream MCU or sensor network over UART or SPI. The 8 KB Flash comfortably stores USB descriptors and HID/COM class stacks, while the 768-byte RAM accommodates USB endpoint buffers plus framing logic. Industrial users benefit from the 2.3 V to 5.5 V input range, which lets the bridge power from the USB VBUS rail or a downstream logic rail.
Recomendado
LED Lighting and Signage Controller
The PIC18F43K22T-I/PT drives DMX512 and SPI-controlled LED chains, where the 64 MHz core sustains up to 800 kbps DMX refresh rates while concurrently servicing on-board diagnostics and display updates. The three ECCP modules generate independent PWM outputs for RGB channels, while the MSSP ports daisy-chain APA102 or WS2812-style LED strips at high refresh rates with DMA-friendly SPI bursts. NanoWatt XLP sleep lets the controller shut down LED strings when the venue is closed, dropping to sub-uA standby. The 44-pin TQFP package gives ample pin budget for keypad, status LED, and I2C ambient-light sensor integration without external logic.
Recomendado
Small Home Appliance Controller
The PIC18F43K22T-I/PT drives small kitchen and household appliances such as coffee machines, induction cooktops, and washing-machine sub-modules, where deterministic control and rich peripheral integration replace discrete logic. The 10-bit ADC reads NTC thermistors and current sense resistors, while the ECCP modules generate zero-cross-switched and phase-angle-controlled triac drive for heating elements and pumps. The second USART connects to a touch-panel controller or a Wi-Fi/BLE module for app-driven control. The 2.3 V to 5.5 V supply range supports both 3.3 V logic and 5 V analog sensor interfaces from a single MCU, reducing BOM and PCB area.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F43K22T-I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F43K22-I/PT | PIC18F43K22T-I/ML | PIC18F43K22-E/PT | PIC18F43K20T-I/PT | PIC18F45Q10 |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT) | 44-pin TQFP (PT) | 44-pin QFN (ML) | 44-pin TQFP (PT) | 44-pin TQFP (PT) | 44-pin TQFP |
| CPU Speed | 64 MHz (16 MIPS) | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash | 8 KB | 8 KB | 8 KB | 8 KB | 16 KB (+100%) | 32 KB |
| RAM | 768 bytes | 768 bytes | 768 bytes | 768 bytes | 1024 bytes (+33%) | 2 KB |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C | -40C to +85C | -40C to +125C (E grade) | -40C to +85C | -40C to +125C |
| ADC Channels | Up to 28 channels, 10-bit | Up to 28 ch, 10-bit | Up to 28 ch, 10-bit | Up to 28 ch, 10-bit | Up to 28 ch, 10-bit | Up to 24 ch, 12-bit |
| nanoWatt XLP | Yes | Yes | Yes | Yes | Yes | Yes |
| Lifecycle Status | Active (newer PIC18F45Q10 recommended) | Active | Active | Active | Active | Active (preferred) |
| Unit Price (1 pc, indicative) | $2.95 | $2.95 (Tray, comparable) | $2.95 (same die) | $3.10 (E grade premium) | $3.20 (16 KB Flash) | $3.50 (newer CIPs) |
Principais diferenciais
- Same-family TQFP variants on Tray for low-volume prototyping (vs PIC18F43K22-I/PT)
- Higher-density QFN package for space-constrained designs (vs PIC18F43K22T-I/ML)
- Extended temperature for harsh environments (vs PIC18F43K22-E/PT)
- Double Flash memory for firmware headroom (vs PIC18F43K20T-I/PT)
- Modern CIP migration path with 12-bit ADC (vs PIC18F45Q10)
Notas de projeto
Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD/AVDD pin pair, with a shared 1 µF to 10 µF bulk capacitor on the supply rail. The PIC18F43K22T-I/PT supports separate AVDD/AVSS for ADC noise isolation - route AVSS to a quiet ground island if ADC accuracy below 1 LSB is required. Use a ferrite bead between VDD and AVDD when the digital rails are noisy, and reference AVDD through a low-noise LDO such as MCP1700.
The 44-pin TQFP (PT) footprint uses 0.8 mm pitch with a 10x10 mm body. Route signals on inner layers to escape the high pin density, and use a ground pour under the package for thermal dissipation. ICSP pins (RB6/RB7) must be accessible without crossing other signal traces to allow in-circuit programming and debugging. The exposed thermal pad (if any) should be soldered to a copper pour tied to VSS.
Do not omit the MCLR pull-up resistor (typically 10 kΩ to VDD) - leaving MCLR floating causes erratic resets under noise. The configuration words (CONFIG1H-4L) must be programmed with valid oscillator and watchdog settings, or the part may not start. When migrating between PIC18F4XK22 variants, validate the analog channel mapping - although most peripherals are pin-compatible, the ADC channel assignments shift with package pin count.
Estimated: at 64 MHz / 5 V operation, the PIC18F43K22T-I/PT core current is typically 6 mA, dissipating approximately 30 mW. With a TQFP theta_JA around 50 C/W, junction temperature rise is roughly 1.5 C above ambient. Thermal design is rarely a concern for normal MCU operation; however, sustained high-current GPIO sourcing (e.g., 25 mA per pin with 36 I/O loaded) can add tens of mW and should be derated for elevated ambient.
Informações de conformidade
RoHS and REACH compliant per Microchip product page. Recommended for automotive designs with appropriate ordering codes; AEC-Q100 qualification is achieved via specific automotive part variants.