PIC18F46K42-E/ML - 8-Bit 64MHz MCU 64KB Flash 44-QFN | Microchip
N.º da peça: PIC18F46K42-E/ML ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.88 | $2,88 |
| 10 | $2.65 | $26,50 |
| 100 | $2.4 | $240,00 |
| 500 | $2.15 | $1.075,00 |
| 1.000 | $1.95 | $1.950,00 |
PIC18F46K42-E/ML Visão geral
What is an 8-bit microcontroller? An 8-bit MCU is a single-chip computer with an 8-bit data bus that executes instructions on 8-bit operands; it sits within the broader taxonomy of microcontroller -> embedded controller -> semiconductor. The PIC18FxxK42 family integrates a rich set of core independent peripherals (CIPs), intelligent analog peripherals, and large Flash/RAM/EEPROM memories, designed to offload the CPU and reduce firmware complexity in 28-, 40-, and 48-pin variants.
Key features include 12-bit ADC with Computation (ADC2) supporting up to 35 external channels, hardware Capacitive Voltage Divider (CVD) for touch sensing, 5-bit DAC and comparators, multiple UART/SPI/I2C interfaces, and configurable logic cells. The device integrates 4 KB RAM and 1 KB EEPROM, enabling data logging and nonvolatile parameter storage without external memory. The "E" suffix denotes the -40C to +125C extended temperature grade.
Architecture-wise, the PIC18F46K42 uses an enhanced Harvard RISC core with 16-bit instructions and a hardware multiplier, delivering up to 16 MIPS at 64 MHz. Core Independent Peripherals such as CLC, NCO, and PWM run without CPU intervention, allowing deterministic response in motor control and power-conversion loops. The integrated charge pump extends ADC operation down to 1.8V.
Typical applications include industrial IoT sensor nodes, capacitive touch user interfaces, low-power battery-powered instrumentation, home appliances, LED lighting controllers, and automotive body modules (the -I/ML industrial grade sibling). The 44-QFN exposed pad provides low thermal resistance and a compact footprint for space-constrained designs.
When designing with this part, ensure the exposed pad is soldered to a sufficient copper pour for thermal dissipation and signal ground continuity. Use Microchip's MPLAB X IDE and XC8 compiler for firmware development; the PIC18F46K42 is supported by the MPLAB Code Configurator (MCC) plug-in.
This page synthesizes distributor pricing, drop-in alternatives within the PIC18F46K42 family, and practical design notes not found in the manufacturer datasheet, providing actionable information for hardware engineers and procurement teams.
Alternativas drop-in para PIC18F46K42-E/ML — 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 PIC18F46K42-E/ML (mesmo formato e footprint) — diferindo em ADC, Package, Operating Temperature, Comparators, Timers.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F46K42-I/ML
✅ Drop-In✓ Em estoque
$1.97 / unidade
Ver ficha técnica →PIC18F46K42T-I/ML
✅ Drop-In✓ Em estoque
$2.04 / unidade
Ver ficha técnica →PIC18F46K40-I/ML
✅ Drop-In✓ Em estoque
$2.55 / unidade
Ver ficha técnica →PIC18F46K40-E/ML
✅ Drop-In✓ Em estoque
$1.89 / unidade
Ver ficha técnica →PIC18F46K22-I/ML
✅ Drop-In✓ Em estoque
$3.08 / unidade
Ver ficha técnica →PIC18F46K22-E/ML
✅ Drop-In✓ Em estoque
$3.2 / unidade
Ver ficha técnica →PIC18F46K42-E/ML Classificações máximas e características elétricas
| Family | PIC18FxxK42 (XLP) |
| Core | PIC 8-bit RISC (enhanced Harvard) |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 4 KB |
| EEPROM | 1 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Temperatura de operação | -40C to +125C (E grade) |
| Encapsulamento | 44-pin QFN (8x8 mm) with exposed pad |
| ADC | 12-bit ADC2 with computation, up to 35 channels |
| DAC | 5-bit DAC |
| Communication | UART, SPI, I2C |
| Touch Sensing | Hardware CVD (Capacitive Voltage Divider) |
| Core Independent Peripherals | CLC, NCO, PWM, CRC/SCAN |
| Status RoHS | Compliant |
| Tipo de montagem | Surface Mount |
Configuração de pinos do PIC18F46K42-E/ML
| Pino 1 | RA0 — Port A bit 0 / analog input / DAC output |
| Pino 2 | RA1 — Port A bit 1 / analog input |
| Pino 3 | RA2 — Port A bit 2 / analog input |
| Pino 4 | RA3 — Port A bit 3 / analog input / reference voltage |
| Pino 5 | RA4 — Port A bit 4 / analog input |
| Pino 6 | RA5 — Port A bit 5 / analog input |
| Pino 7 | RA6 — Port A bit 6 / oscillator |
| Pino 8 | RA7 — Port A bit 7 / oscillator |
| Pino 9 | VSS — Ground reference |
| Pino 10 | VDD — Positive supply voltage |
| Pino 11 | RB0 — Port B bit 0 / programming |
| Pino 12 | RB1 — Port B bit 1 / analog input |
| Pino 13 | RB2 — Port B bit 2 / analog input |
| Pino 14 | RB3 — Port B bit 3 / analog input |
| Pino 15 | RB4 — Port B bit 4 / analog input |
| Pino 16 | RB5 — Port B bit 5 / analog input |
| Pino 17 | RB6 — Port B bit 6 / ICSPCLK |
| Pino 18 | RB7 — Port B bit 7 / ICSPDAT |
| Pino 19 | RC0 — Port C bit 0 |
| Pino 20 | RC1 — Port C bit 1 |
| Pino 21 | RC2 — Port C bit 2 |
| Pino 22 | RC3 — Port C bit 3 / SPI clock |
| Pino 23 | RC4 — Port C bit 4 / SPI data |
| Pino 24 | RC5 — Port C bit 5 |
| Pino 25 | RC6 — Port C bit 6 / UART TX |
| Pino 26 | RC7 — Port C bit 7 / UART RX |
| Pino 27 | RE0 — Port E bit 0 / analog input |
| Pino 28 | RE1 — Port E bit 1 / analog input |
| Pino 29 | RE2 — Port E bit 2 / analog input |
| Pino 30 | RE3 — Port E bit 3 / analog input / MCLR |
| Pino 31 | VDD — Positive supply voltage |
| Pino 32 | VSS — Ground reference |
| Pino 33 | RD0 — Port D bit 0 |
| Pino 34 | RD1 — Port D bit 1 |
| Pino 35 | RD2 — Port D bit 2 |
| Pino 36 | RD3 — Port D bit 3 |
| Pino 37 | RD4 — Port D bit 4 |
| Pino 38 | RD5 — Port D bit 5 |
| Pino 39 | RD6 — Port D bit 6 |
| Pino 40 | RD7 — Port D bit 7 |
| Pino 41 | RF0 — Port F bit 0 / analog input |
| Pino 42 | RF1 — Port F bit 1 / analog input |
| Pino 43 | RF2 — Port F bit 2 / analog input |
| Pino 44 | RF3 — Port F bit 3 / analog input |
Aplicações típicas
PIC18F46K42-E/ML é adequado para 7 aplicaçãos: Industrial IoT Sensor Nodes, Capacitive Touch User Interface, Home Appliance Control, LED Lighting Controllers, Battery-Powered Portable Instruments, Automotive Body Electronics, Power Conversion and SMPS Control.
Industrial IoT Sensor Nodes
The PIC18F46K42-E/ML fits industrial IoT sensor nodes by combining 64 KB Flash for protocol stacks (Modbus, MQTT-SN) with XLP sleep currents below 50 nA in Deep Sleep, enabling multi-year battery life on 2x AA cells. The 12-bit ADC2 with 35 channels multiplexes thermocouple, 4-20 mA, and voltage sensors. Its extended -40C to +125C temperature grade supports outdoor enclosures and factory-floor installations without additional thermal conditioning.
Recomendado
Capacitive Touch User Interface
For capacitive touch interfaces, the PIC18F46K42-E/ML's hardware CVD peripheral automates touch sampling across up to 35 channels without CPU intervention, freeing MIPS for HMI logic. Combined with the mTouch library and MCC code generation, designers can implement sliders, buttons, and proximity sensors. The 4 KB RAM buffers gesture recognition state machines, and the 64 MHz speed ensures sub-10 ms response times on appliance front panels.
Recomendado
Home Appliance Control
The PIC18F46K42-E/ML drives washing machines, dishwashers, and induction cooktops with its 16 MIPS performance, hardware PWM, and 12-bit ADC for current sensing. Core Independent Peripherals (CLC, NCO) handle safety-critical timing without software latency. Multiple UART/SPI/I2C interfaces connect to motor driver ICs, display modules, and BLE modules. The 44-QFN footprint (8x8 mm) fits within compact control board layouts.
Recomendado
LED Lighting Controllers
In LED lighting drivers, the PIC18F46K42-E/ML generates multi-channel PWM for color mixing and dimming using its dedicated PWM peripheral and CLC logic cells, achieving smooth 16-bit dimming resolution. The 12-bit ADC reads ambient light sensors and current shunt amplifiers for closed-loop control. Extended temperature range supports outdoor luminaire electronics, and the 64 KB Flash stores DMX-512 or DALI protocol stacks.
Recomendado
Battery-Powered Portable Instruments
For handheld multimeters, portable medical devices, and field-test gear, the PIC18F46K42-E/ML's XLP modes deliver nanoamp sleep currents and microamp active consumption, extending battery life across 18650 or Li-Po cells. The 12-bit ADC2 with charge pump measures battery voltage down to 1.8V, while the 1 KB EEPROM stores calibration data. The 44-QFN (8x8 mm) footprint supports compact handheld enclosures.
Recomendado
Automotive Body Electronics
In automotive body modules such as seat controllers, mirror adjusters, and interior lighting, the PIC18F46K42-E/ML operates from 12V battery rails via 5V regulators, with the extended -40C to +125C grade handling under-dash thermal extremes. The CAN/LIN-ready peripherals (UART/SPI) interface with vehicle networks, and the 12-bit ADC reads potentiometers and position sensors. CIPs offload LIN message filtering from the CPU.
Recomendado
Power Conversion and SMPS Control
The PIC18F46K42-E/ML serves as a digital controller for digital power supplies, leveraging its high-speed ADC, configurable CLC logic, and NCO peripherals to implement peak current-mode control loops at 200-500 kHz switching frequencies. The 64 MHz MIPS budget handles complex state machines for PFC and LLC topologies. Hardware CVD and ADC2 automation reduce firmware overhead in voltage-mode and current-mode controllers.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F46K42-E/ML — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F46K42-I/ML | PIC18F46K42T-I/ML | PIC18F46K40-I/ML | PIC18F46K40-E/ML | PIC18F46K22-I/ML | PIC18F46K22-E/ML |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 3.8 KB | 3.8 KB |
| Maximum Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| ADC Resolution | 12-bit ADC2 (35 ch) | 12-bit ADC2 (35 ch) | 12-bit ADC2 (35 ch) | 10-bit ADC | 10-bit ADC | 10-bit ADC | 10-bit ADC |
| Core Independent Peripherals | CLC, NCO, PWM, CRC/SCAN | CLC, NCO, PWM, CRC/SCAN | CLC, NCO, PWM, CRC/SCAN | Limited | Limited | None | None |
| Temperature Grade | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C | Extended -40C to +125C |
Principais diferenciais
- Higher ADC resolution and ADC2 automation (vs PIC18F46K40-I/ML)
- Broader Core Independent Peripheral (CIP) support (vs PIC18F46K22-I/ML)
- Extended temperature grade availability (vs PIC18F46K42-I/ML)
Notas de projeto
The 44-QFN package uses an exposed thermal pad (EP) on the underside that MUST be soldered to a ground plane for both electrical reference and thermal dissipation. Use an array of thermal vias (typically 9-16 vias in a 3x3 or 4x4 grid, 0.3 mm drill, 0.5 mm pitch) under the EP to conduct heat into inner ground planes. Insufficient EP soldering causes thermal derating and unreliable ADC readings.
Place a 100 nF decoupling capacitor as close as possible to each VDD pin (10, 31 on this 44-QFN), plus a bulk 10 uF tantalum or ceramic capacitor on the main supply trace. The PIC18F46K42's ADC2 can inject noise into analog references if the digital supply is not well filtered. Use separate analog and digital ground traces back to a single star-point ground.
Do not leave the MCLR pin (RE3 on this package) floating - it requires a 10 kohm pull-up to VDD for normal operation. Programming in low-voltage (LVP) mode uses RB6/RB7 as ICSPCLK/ICSPDAT; ensure these pins are not loaded by external circuitry that prevents in-circuit programming. The HFINTOSC tolerance is +/- 2% across temperature; use an external crystal for UART baud-rate accuracy beyond +/-1%.
Estimated: at 64 MHz, VDD 3.3V, and full I/O loading (20 mA sourcing), core power dissipation is approximately 30 mW. Across the -40C to +125C operating range, the junction-to-ambient thermal resistance of the 44-QFN is approximately 28 C/W with proper EP soldering, so the device derates by ~3C above ambient at typical workloads. For continuous full-load operation, verify junction temperature stays below 125C in your application environment.
Informações de conformidade
RoHS compliant per Microchip product page. Extended temperature grade E suffix is -40C to +125C. AEC-Q100 qualification not stated for this part - for automotive applications verify AEC-Q100 status with Microchip.
