PIC18F46K42T-I/MV - 8-bit 64MHz MCU 64KB Flash | Microchip
N.º da peça: PIC18F46K42T-I/MV ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.5 | $4,50 |
| 10 | $4.05 | $40,50 |
| 100 | $3.6 | $360,00 |
| 500 | $3.2 | $1.600,00 |
| 1.000 | $2.85 | $2.850,00 |
PIC18F46K42T-I/MV Visão geral
An 8-bit microcontroller (MCU) is a single-chip processor with an 8-bit data bus, optimized for deterministic real-time control at low power and modest cost. Within the embedded hierarchy, an 8-bit MCU sits below 16-bit and 32-bit MCUs in computational throughput but above discrete logic in functional integration. The PIC18 family uses a Harvard RISC architecture with hardware multiplier, intended for mixed-signal embedded designs that demand small code footprint, low active and sleep currents, and rich on-chip peripherals.
Key features of this part include the 12-bit ADC2 (automated averaging, burst-averaging, threshold-triggered acquisition), 10-bit PWM with edge alignment, complementary waveform generation and variable dead-band, plus multiple communication peripherals: UART with protocol support, SPI, I2C with SMBus/PMBus compatibility, and CAN-FD ready I/O. The device also implements Configurable Logic Cells (CLC), a Peripheral Pin Select (PPS) matrix, and zero-cross detection on select pins.
Architecturally, the K42 family extends the K40 line with hardware DMA, expanded CLC blocks, more vectored interrupt sources, and Memory Access Partitioning for bootloader/IP protection. The XLP core supports nanoWatt XLP sleep currents with multiple low-power modes (Sleep, Idle, Doze, PMD), allowing the device to consume microamps in standby while peripherals continue to operate via DMA.
Typical applications include industrial sensor nodes, low-power IoT edge devices, automotive body and HVAC controls (non-safety), home appliances, consumer HMI panels, and USB-to-UART bridges. The wide 2.3V to 5.5V VDD range and 64MHz performance also make it suitable for brushed DC motor control and small BLDC commutation loops.
When designing with this MCU, enable the Memory Access Partitioning early to lock bootloader regions, place the decoupling capacitor network (100nF + 10uF bulk) within 3mm of VDD/AVDD, and verify the PPS mapping for your chosen pinout. The UQFN-40 thermal pad must be soldered to a continuous ground pour for specified electrical and thermal performance.
This page synthesizes distributor pricing, parametric alternatives, and practical design notes not found in the manufacturer datasheet, providing a side-by-side comparison against same-family K40/K42 MCUs and cross-vendor 8-bit options.
Alternativas drop-in para PIC18F46K42T-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 PIC18F46K42T-I/MV (mesmo formato e footprint) — diferindo em Package, Communication, Comparators, DAC, Operating Temperature.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F46K42-I/MV
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F46K42T-I/ML
✅ Drop-In✓ Em estoque
$2.04 / unidade
Ver ficha técnica →PIC18F46K40T-I/MV
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F45K42T-I/ML
✅ Drop-In✓ Em estoque
$1.75 / unidade
Ver ficha técnica →PIC18F46K22-I/MV
✅ Drop-In✓ Em estoque
$2.1 / unidade
Ver ficha técnica →PIC18F46K42T-I/MV Classificações máximas e características elétricas
| Core Architecture | PIC18 (Harvard RISC, 8-bit data, 16-bit instruction) |
| Maximum CPU Frequency | 64 MHz |
| Performance | 16 MIPS (64 MHz) |
| Program Flash | 64 KB (32K x 16 words) |
| SRAM | 4 KB |
| EEPROM | 1 KB |
| Encapsulamento | 40-pin UQFN (MV) 5x5 mm |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| ADC | 12-bit ADC2 with Computation, up to 35 channels |
| DAC | 5-bit DAC, 8-bit DAC with buffered output |
| Comparators | Up to 3 (selectable references) |
| PWM Outputs | Up to 3 CCP/ECCP, 16-bit PWM with complementary outputs |
| Communication | UART, SPI, I2C (SMBus/PMBus), CAN-FD ready I/O |
| DMA | 4 channels |
| Temperatura de operação | -40C to +85C (Industrial) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant (lead-free per Microchip product page) |
Configuração de pinos do PIC18F46K42T-I/MV
| Pino 1 | RA0/ANA0/IN0+ — Analog/Digital I/O, op-amp input |
| Pino 2 | RA1/ANA1/IN0- — Analog/Digital I/O, op-amp input |
| Pino 3 | RA2/ANA2 — Analog/Digital I/O |
| Pino 4 | RA3/ANA3/VREF+ — Analog/Digital I/O, ADC positive reference |
| Pino 5 | RA4/ANA4 — Analog/Digital I/O |
| Pino 6 | RA5/ANA5 — Analog/Digital I/O |
| Pino 7 | RA6 — Digital I/O |
| Pino 8 | RA7 — Digital I/O |
| Pino 9 | VSS — Ground |
| Pino 10 | VDD — Positive supply |
| Pino 11 | RB0/ANB0/ZCD — Analog/Digital I/O, zero-cross detect |
| Pino 12 | RB1/ANB1 — Analog/Digital I/O |
| Pino 13 | RB2/ANB2 — Analog/Digital I/O |
| Pino 14 | RB3/ANB3 — Analog/Digital I/O |
| Pino 15 | RB4/ANB4 — Analog/Digital I/O |
| Pino 16 | RB5/ANB5 — Analog/Digital I/O, ICSP clock |
| Pino 17 | RB6/ICSPCLK — ICSP clock, digital I/O |
| Pino 18 | RB7/ICSPDAT — ICSP data, digital I/O |
| Pino 19 | RC0/ANC0 — Analog/Digital I/O |
| Pino 20 | RC1/ANC1 — Analog/Digital I/O |
| Pino 21 | RC2/ANC2 — Analog/Digital I/O |
| Pino 22 | RC3/ANC3 — Analog/Digital I/O |
| Pino 23 | RC4/ANC4 — Analog/Digital I/O |
| Pino 24 | RC5 — Digital I/O |
| Pino 25 | RC6 — Digital I/O |
| Pino 26 | RC7 — Digital I/O |
| Pino 27 | VSS — Ground |
| Pino 28 | VDD — Positive supply |
| Pino 29 | RD0 — Digital I/O, PPS-mappable |
| Pino 30 | RD1 — Digital I/O, PPS-mappable |
| Pino 32 | RD2 — Digital I/O, PPS-mappable |
| Pino 31 | RD3 — Digital I/O, PPS-mappable |
| Pino 33 | RD4 — Digital I/O, PPS-mappable |
| Pino 34 | RD5 — Digital I/O, PPS-mappable |
| Pino 35 | RD6 — Digital I/O, PPS-mappable |
| Pino 36 | RD7 — Digital I/O, PPS-mappable |
| Pino 37 | RE0 — Digital I/O |
| Pino 38 | RE1 — Digital I/O |
| Pino 39 | RE2 — Digital I/O |
| Pino 40 | RE3 — Digital I/O |
Aplicações típicas
PIC18F46K42T-I/MV é adequado para 7 aplicaçãos: Industrial Sensor Hubs, Low-Power IoT Edge Nodes, Home Appliance Control Boards, Consumer HMI Panels, USB-to-UART Bridges, Brushed DC Motor Control, Battery-Powered Data Loggers.
Industrial Sensor Hubs
The PIC18F46K42T-I/MV integrates 64KB Flash and 12-bit ADC2 to aggregate multiple analog and digital sensor inputs in industrial monitoring hubs. Its 4KB SRAM buffers burst samples while DMA moves data without CPU wake-up, reducing power. The 40-pin UQFN footprint exposes 35+ ADC channels via Peripheral Pin Select, allowing multiple thermocouple or 4-20mA inputs on a single chip.
Recomendado
Low-Power IoT Edge Nodes
NanoWatt XLP sleep modes allow the PIC18F46K42T-I/MV to drop below 1uA in standby while CLC and DMA continue sensor sampling. The 4KB SRAM supports modest protocol stacks, and 64KB Flash holds application plus OTA bootloader partitioned via MAP. The wide 2.3V-5.5V supply range simplifies battery or USB-powered designs.
Recomendado
Home Appliance Control Boards
The 16-bit PWM with complementary outputs and dead-band control makes the PIC18F46K42T-I/MV a fit for brushed DC and small BLDC motor drivers in washing machines, dishwashers, and HVAC actuators. The integrated comparators handle zero-cross detection and overcurrent sensing. Operating from 2.3V-5.5V tolerates noisy rectified mains rails after filtering.
Recomendado
Consumer HMI Panels
PWM-driven LED dimming, CLC-implemented keypad scanning, and the 12-bit ADC2 for capacitive touch via an analog frontend all fit in one PIC18F46K42T-I/MV. The 4KB SRAM drives small graphical LCDs with frame buffers. MAP protects vendor-defined UI assets in Flash from accidental overwrites by user code.
Recomendado
USB-to-UART Bridges
The PIC18F46K42T-I/MV's UART and DMA pair well with external USB-to-serial bridges, allowing reliable low-latency data exchange with PC hosts. The 64KB Flash supports flexible command-set firmware, while MAP isolates bootloader for field-upgradable bridges. PPS remaps UART to any I/O pin, easing PCB routing.
Recomendado
Brushed DC Motor Control
With 16 MIPS, the PIC18F46K42T-I/MV closes current and speed loops fast enough for brushed DC motor drives under 500W. Its 3 ECCP modules generate complementary PWM with hardware dead-band, while analog comparators deliver cycle-by-cycle current limiting. The 5x5mm UQFN keeps the BOM compact for space-constrained motor boards.
Recomendado
Battery-Powered Data Loggers
Combining 1KB EEPROM for parameter storage, 4KB SRAM for sample buffering, and nanoWatt XLP sleep modes, the PIC18F46K42T-I/MV suits portable loggers sampling sensors hourly or daily. The ADC2's burst-averaging mode lowers noise on battery voltage measurements, while DMA offloads writes so the CPU can stay in sleep.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F46K42T-I/MV — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F46K42-I/MV | PIC18F46K42T-I/ML | PIC18F46K40T-I/MV | PIC18F45K42T-I/ML | PIC18F46K22-I/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin UQFN (MV) 5x5 | 40-pin UQFN (MV) 5x5 - same | 44-pin QFN (ML) 8x8 | 40-pin UQFN (MV) 5x5 - same | 44-pin QFN (ML) 8x8 | 40-pin UQFN (MV) 5x5 - same |
| Max CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 2 KB | 3.8 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| DMA | Yes (4 channels) | Yes (4 channels) | Yes (4 channels) | No | Yes (4 channels) | No |
| Memory Access Partition (MAP) | Yes | Yes | Yes | No | Yes | No |
| ADC | 12-bit ADC2 with computation | 12-bit ADC2 with computation | 12-bit ADC2 with computation | 10-bit ADC | 12-bit ADC2 with computation | 10-bit ADC |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
Principais diferenciais
- Integrated DMA controller (vs PIC18F46K40T-I/MV)
- Memory Access Partitioning (MAP) (vs PIC18F46K40T-I/MV)
- 12-bit ADC2 with Computation (vs PIC18F46K22-I/MV)
Notas de projeto
Place a 100nF X7R ceramic capacitor within 3mm of each VDD/AVDD pin pair, plus a shared 10uF bulk on the main VDD rail. The UQFN-40 thermal pad must be soldered to a continuous ground pour of at least 4 vias in a 0.5mm pitch grid for specified thermal and electrical performance. Avoid routing high-speed digital signals under the exposed pad to prevent ground bounce coupling.
Do not enable Memory Access Partitioning (MAP) until the bootloader is fully validated, as a misconfigured partition table can lock out ICSP. Confirm the PPS mapping matches your schematic before generating code - remapping UART TX to the wrong pin is a common boot-blocking mistake. AVDD must be tied to VDD or driven by a low-impedance source within 0.3V for ADC2 accuracy.
Use the nanoWatt XLP sleep modes (Sleep, Idle, Doze) to achieve <1uA standby. Estimated: at VDD=3.3V with all peripherals disabled, the K42 sleep current is typically 50-200nA per Microchip typical characteristics, but verify on the bench for your firmware build because GPIO states and pull-ups directly affect quiescent draw. DMA can service sensors without waking the CPU.
Keep ADC analog traces short and away from PWM and switching traces. Use a guard ring tied to AVSS around analog inputs to reduce digital coupling. If using the internal FVR as ADC reference, route the FVR bypass capacitor directly to AVSS. The 12-bit ADC2 retains 1 LSB accuracy only with proper input RC impedance matching.
Informações de conformidade
RoHS compliant and lead-free per Microchip product page and YIC Electronics listing. Not AEC-Q100 qualified - automotive applications require the -I/MVAO or -E/MVAO variants. Halogen-free status not explicitly stated in provided data.
