PIC18LF43K22T-I/MV - 8-bit 64MHz 8KB Flash XLP MCU | Microchip
N.º da peça: PIC18LF43K22T-I/MV ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.65 | $26,50 |
| 100 | $2.4 | $240,00 |
| 500 | $2.15 | $1.075,00 |
| 1.000 | $1.92 | $1.920,00 |
PIC18LF43K22T-I/MV Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash program memory, peripherals (timers, ADC, communication, GPIO), and interrupt logic onto one silicon die. Within the broader taxonomy, a PIC18F device is a Harvard-architecture RISC MCU -> a microcontroller -> an embedded processor -> a semiconductor IC. The PIC18LF43K22T-I/MV specifically targets ultra-low-power applications, leveraging Microchip's nanoWatt XLP technology to achieve sleep currents in the nanoamp range, suitable for battery-powered IoT endpoints, sensor nodes, and wearable devices.
Key features of this part include: 64 MHz maximum clock (16 MIPS at 4x PLL), 8 KB Flash (4K x 16), 512 bytes RAM, 256 bytes EEPROM, 35 I/O pins, a 10-bit ADC with up to 30 channels, multiple Enhanced USART, MSSP (SPI/I2C) modules, and capture/compare/PWM (ECCP) peripherals. The LF variant's 1.8V-3.6V range and nanoWatt XLP technology make it ideal for energy harvesting and battery-powered designs that must operate for years on a single cell.
Architecturally, the PIC18LF43K22T-I/MV uses an enhanced RISC core with 16-bit opcodes, 8-bit data path, hardware multiply, and a hardware stack with 31 levels, providing predictable interrupt latency. Internal oscillator blocks and flexible clock switching support low-power modes (Sleep, Idle, Doze) with programmable wake sources.
Typical applications include portable medical devices, IoT sensor hubs, automotive body electronics (non-safety), remote controls, low-power wireless sensor nodes, battery chargers, smart meters, and human-machine interface (HMI) controllers. The wide peripheral set also supports small TFT displays and capacitive-touch user interfaces.
When designing with this MCU, plan for adequate decoupling (100 nF + 10 µF bulk) on VDD/AVDD/VBAT pins, and follow Microchip's PCB layout guidelines for QFN exposed-pad thermal dissipation. The 5x5 UQFN (MV) footprint has 40 pins at 0.4 mm pitch; signal integrity at 64 MHz requires careful trace routing and ground-return stitching.
This page synthesizes distributor pricing, pin-to-pin compatible drop-in alternatives from the same PIC18LF43K22 family, and practical design notes that complement (not duplicate) the manufacturer datasheet.
Alternativas drop-in para PIC18LF43K22T-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 PIC18LF43K22T-I/MV (mesmo formato e footprint) — diferindo em ADC, Package, I/O Pins, Operating Temperature, Program Memory (Flash).
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18LF43K22-I/MV
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18LF43K22-E/MV
✅ Drop-In✓ Em estoque
$1.78 / unidade
Ver ficha técnica →PIC18F43K22T-I/MV
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F43K22-I/MV
✅ Drop-In✓ Em estoque
$1.08 / unidade
Ver ficha técnica →PIC18LF45K22T-I/MV
✅ Drop-In✓ Em estoque
$2.18 / unidade
Ver ficha técnica →PIC18LF24K42T-I/MV
✅ Drop-In✓ Em estoque
$1.35 / unidade
Ver ficha técnica →PIC18LF43K22T-I/MV Classificações máximas e características elétricas
| Core Architecture | PIC18, 8-bit RISC, 16-bit opcode |
| Maximum CPU Clock | 64 MHz (16 MIPS) |
| Program Memory (Flash) | 8 KB (4K x 16) |
| Data RAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 34-35 (package-dependent) |
| ADC | 10-bit, up to 30 channels |
| Encapsulamento | 40-pin UQFN (5x5 mm), exposed pad |
| Temperatura de operação | -40C to +85C (Industrial) |
| Communication | 2x EUSART, 2x MSSP (SPI/I2C) |
| Timers | Multiple 8-bit/16-bit with ECCP |
| Low-Power Technology | nanoWatt XLP |
| Status RoHS | Compliant |
Configuração de pinos do PIC18LF43K22T-I/MV
| Pino 1 | RA2/AN2 — GPIO / Analog input channel 2 |
| Pino 2 | RA3/AN3/VREF+ — GPIO / Analog input / Positive voltage reference |
| Pino 3 | RA4/AN4 — GPIO / Analog input channel 4 |
| Pino 4 | RA5/AN5/SS1 — GPIO / Analog input / MSSP1 slave select |
| Pino 5 | AVDD — Analog supply voltage |
| Pino 6 | AVSS — Analog ground |
| Pino 7 | RA7/OSC1 — GPIO / Crystal oscillator input |
| Pino 8 | RA6/OSC2 — GPIO / Crystal oscillator output |
| Pino 9 | RC1/CCP2 — GPIO / Capture/Compare/PWM 2 |
| Pino 10 | RC2/CCP1 — GPIO / Capture/Compare/PWM 1 |
| Pino 11 | VDD — Digital supply voltage (core) |
| Pino 12 | VSS — Digital ground (core) |
| Pino 13 | RB7/ICSPDAT — GPIO / ICSP data |
| Pino 14 | RB6/ICSPCLK — GPIO / ICSP clock |
| Pino 15 | RB5/AN13 — GPIO / Analog input channel 13 |
| Pino 16 | RB4/AN11 — GPIO / Analog input channel 11 |
| Pino 17 | RB3/AN9 — GPIO / Analog input channel 9 |
| Pino 18 | RB2/AN8 — GPIO / Analog input channel 8 |
| Pino 19 | RB1/AN10 — GPIO / Analog input channel 10 |
| Pino 20 | RB0/AN12 — GPIO / Analog input channel 12 |
| Pino 21 | RC7/RX1 — GPIO / EUSART1 receive |
| Pino 22 | RC6/TX1 — GPIO / EUSART1 transmit |
| Pino 23 | RC5/SDO2 — GPIO / MSSP2 SPI data out |
| Pino 24 | RC4/SDA2 — GPIO / MSSP2 I2C data |
| Pino 25 | RC3/SCL2 — GPIO / MSSP2 I2C clock |
| Pino 26 | RC0/SOSCO — GPIO / Secondary oscillator output (32.768 kHz) |
| Pino 27 | VSS — Digital ground (secondary) |
| Pino 28 | VDD — Digital supply voltage (secondary) |
| Pino 29 | RD7 — GPIO (port D) |
| Pino 30 | RD6 — GPIO (port D) |
| Pino 31 | RD5 — GPIO (port D) |
| Pino 32 | RD4 — GPIO (port D) |
| Pino 33 | RD3 — GPIO (port D) |
| Pino 34 | RD2 — GPIO (port D) |
| Pino 35 | RD1 — GPIO (port D) |
| Pino 36 | RD0 — GPIO (port D) |
| Pino 37 | RE2 — GPIO (port E) |
| Pino 38 | RE1 — GPIO (port E) |
| Pino 39 | RE0 — GPIO (port E) |
| Pino 40 | MCLR/RE3 — Master Clear (reset) / GPIO port E bit 3 |
| Pino EP | EP — Exposed thermal pad (must be soldered to PCB ground plane) |
Aplicações típicas
PIC18LF43K22T-I/MV é adequado para 6 aplicaçãos: Battery-Powered IoT Sensor Nodes, Portable Medical Devices, Industrial Sensor Hubs and Data Loggers, Remote Controls and Human-Machine Interface, Smart Meter and Energy Monitoring, Automotive Body Electronics (Non-Safety).
Battery-Powered IoT Sensor Nodes
The PIC18LF43K22T-I/MV's 1.8V-3.6V operation and nanoWatt XLP technology make it ideal for battery-powered IoT sensor nodes. The Sleep current in the nanoamp range allows multi-year operation on a single coin cell, while the 64 MHz CPU clock and 16 MIPS throughput handle sensor acquisition, local processing, and radio hand-off. With up to 30 ADC channels, the MCU can read multiple analog sensors (temperature, humidity, gas, strain) directly without external multiplexers. The integrated MSSP modules support SPI/3-wire interfaces to Sub-GHz transceivers like the MRF89XA or LoRa modules, while the EUSART enables RS-485 or UART-based radios. The 8 KB Flash accommodates typical IoT firmware including drivers, radio stacks (e.g., proprietary SimpleMAC, Wireless M-Bus), and OTA bootloader stubs. For added robustness, the 256-byte EEPROM provides non-volatile parameter storage (calibration coefficients, network IDs) that survives power cycles.
Recomendado
Portable Medical Devices
The PIC18LF43K22T-I/MV is well-suited for portable medical devices such as glucose meters, pulse oximeters, and portable ECG patches. The 1.8V-3.6V operation allows direct connection to single-cell Li-ion or 2x AAA/AA batteries, while the nanoWatt XLP Sleep mode enables shelf-life exceeding 12 months on primary cells. The 10-bit ADC with 30 channels supports multiple sensor inputs (optical, electrochemical, temperature) with sufficient resolution for clinical-grade measurements. Hardware ECCP peripherals can drive precision LED current sources for optical sensors, while MSSP modules support I2C displays for patient-facing readouts. The PIC18 core's deterministic interrupt latency (hardware stack, fixed instruction timing) is critical for medical timing requirements. For IEC 60601-1 compliance, the UQFN package's low profile (0.5 mm) supports thin-form-factor designs typical of wearable health monitors.
Recomendado
Industrial Sensor Hubs and Data Loggers
The PIC18LF43K22T-I/MV enables compact industrial sensor hubs and data loggers with 4-20 mA loop, Modbus RTU, or WirelessHART connectivity. The Industrial temperature grade (-40C to +85C) and robust PIC18 core support harsh factory environments. The 64 MHz CPU clock drives 10 ms Modbus cycle times with margin for protocol stacks, sensor compensation algorithms (linearization, filtering), and diagnostics. The 10-bit ADC handles 4-20 mA current loop measurements via shunt resistors, while EUSART modules support RS-485 half-duplex with hardware direction control. The 256-byte EEPROM stores calibration tables and configuration parameters non-volatilely, eliminating the need for external serial EEPROMs. For data logging, the 8 KB Flash can buffer several thousand timestamped sensor samples before pushing to a gateway, supporting brownout recovery and batch transfer.
Recomendado
Remote Controls and Human-Machine Interface
The PIC18LF43K22T-I/MV powers low-cost remote controls, thermostats, and small HMI panels. The 34-35 I/O pins drive matrix keypads (4x4 or 5x5), character LCDs (HD44780-compatible), or capacitive-touch user interfaces via the mTouch peripheral. The ECCP modules generate PWM for LED dimming, buzzer tones, or backlight brightness control. The 1.8V-3.6V operation allows direct drive from 2x AA cells with no boost converter, simplifying BOM and extending battery life. The 8 KB Flash accommodates multiple IR/RF protocol stacks (NEC, RC5, RC6, proprietary RF), keyboard scan logic, and LCD driver routines. For voice-controlled devices, the MSSP modules can interface to external audio codecs or MEMS microphones.
Recomendado
Smart Meter and Energy Monitoring
The PIC18LF43K22T-I/MV supports smart electricity, gas, and water meters with its combination of 10-bit ADC, low-power modes, and robust peripherals. The ADC samples current shunts or voltage dividers for active power calculation, while the ECCP generates PWM for optocoupler-driven solid-state relays or SCR firing circuits. The MSSP modules interface to EEPROMs (MCP24LC256) for time-of-use tariff storage, and to M-Bus or Wireless M-Bus transceivers for AMI (Advanced Metering Infrastructure) uplink. The nanoWatt XLP Sleep mode draws only nanoamps when the meter is in standby, achieving 10+ year battery life for gas and water meters. The 256-byte internal EEPROM stores tamper flags, billing data, and meter calibration constants without external memory.
Recomendado
Automotive Body Electronics (Non-Safety)
The PIC18LF43K22T-I/MV is suitable for non-safety automotive body electronics such as interior lighting controllers, seat position memories, mirror adjusters, and auxiliary HVAC controls. The Industrial temperature grade handles cabin temperatures (-40C to +85C), and the robust PIC18 core withstands automotive EMI/EMC environments. The 10-bit ADC monitors switch positions and potentiometer inputs, while the ECCP modules drive LED strings with PWM dimming. The MSSP modules interface to LIN bus transceivers (MCP2003) for sub-network communication, reducing wiring harness complexity. For body controllers requiring higher temperature tolerance, the PIC18LF43K22-E/MV Extended variant (-40C to +125C) is the recommended drop-in replacement.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18LF43K22T-I/MV — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18LF43K22-I/MV | PIC18LF43K22-E/MV | PIC18F43K22T-I/MV | PIC18F43K22-I/MV | PIC18LF45K22T-I/MV |
|---|---|---|---|---|---|---|
| Package | 40-pin UQFN (5x5 mm) | 40-pin UQFN (5x5 mm) - same | 40-pin UQFN (5x5 mm) - same | 40-pin UQFN (5x5 mm) - same | 40-pin UQFN (5x5 mm) - same | 40-pin UQFN (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V |
| Flash Program Memory | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 32 KB |
| RAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Max CPU Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
| Packaging Media | Tape & Reel | Tray | Tray | Tape & Reel | Tray | Tape & Reel |
Principais diferenciais
- Industrial temperature grade (-40C to +85C) for harsh environments (vs PIC18LF43K22-E/MV (Extended -40C to +125C))
- Low-voltage 1.8V-3.6V operation for battery-powered designs (vs PIC18F43K22T-I/MV (2.3V-5.5V))
- nanoWatt XLP technology for Sleep current below 100 nA (vs PIC18LF45K22T-I/MV (32 KB Flash))
- Tape & Reel packaging for high-volume assembly (vs PIC18LF43K22-I/MV (Tray))
Notas de projeto
The PIC18LF43K22T-I/MV's 1.8V-3.6V operation supports direct connection to a single-cell Li-ion or 2x AA/AAA battery without a boost converter, reducing BOM cost. For designs with higher voltage sources (e.g., 5V USB), use the PIC18F43K22T-I/MV (F variant, 2.3V-5.5V) instead. Decoupling: place 100 nF ceramic + 10 µF bulk on VDD/VSS pins 11/12 and 28/27; add separate AVDD/AVSS filter (10 Ω + 100 nF) on analog pins 5/6 to isolate ADC noise from digital supply.
The 40-pin UQFN (5x5 mm) package has an exposed thermal pad (EP) that must be soldered to a ground pad on the PCB for thermal dissipation and electrical reference. Estimated: at 64 MHz / 3.3V operation, the MCU consumes approximately 15 mA (active) and below 100 nA (Sleep); the EP provides thermal relief but does not require an external heatsink. Use 4 thermal vias (0.3 mm drill) connecting EP to inner ground plane to reduce ground bounce and improve EMI.
UQFN layout requires 0.4 mm pitch traces with NSMD (Non-Solder Mask Defined) pads. Keep traces short (<10 mm) to the ICSP connector (RB6/RB7, pins 13/14) to avoid programming issues. Place decoupling capacitors within 2 mm of each VDD/VSS pair. For 64 MHz operation, maintain impedance-controlled traces for high-speed signals (SPI clock, EUSART), and provide a solid ground plane beneath the MCU to reduce EMI.
Do not exceed 3.6V on VDD for the PIC18LF43K22T-I/MV (LF variant); this permanently damages the part. Verify all ADC analog inputs remain within AVSS to AVDD (typically VDD) range during transients. The MCLR pin (40) requires a pull-up resistor (typically 10 kΩ) for normal operation; if left floating, the part may enter reset unexpectedly. When using the internal oscillator, calibrate the OSCTUNE register per the datasheet calibration procedure for precise UART baud rates.
Informações de conformidade
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified (Industrial grade); for AEC-Q100 automotive applications, consult Microchip's automotive-grade MCU portfolio. Lead-free (Pb-free) reflow-compatible per JEDEC J-STD-020.
