PIC18F46K42-I/ML - 8-Bit 64MHz 64KB Flash MCU | Microchip
N.º da peça: PIC18F46K42-I/ML ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.04 | $30,40 |
| 100 | $2.55 | $255,00 |
| 500 | $2.21 | $1.105,00 |
| 1.000 | $1.97 | $1.970,00 |
PIC18F46K42-I/ML Visão geral
A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and a rich set of on-chip peripherals such as ADCs, timers, communication interfaces, and digital logic. The PIC18F architecture extends the classic PIC16 instruction set with 16-bit program word support, a hardware multiplier, and a linear program memory space up to 2 MB, occupying the midpoint of Microchip's 8-bit lineup between the legacy PIC16 and the more powerful dsPIC/PIC32 families. The PIC18FxxK42 generation specifically targets applications that require both high analog integration (12-bit ADC, DAC, op amps, comparators) and aggressive power management.
Key features include Vectored Interrupts for deterministic interrupt response, a DMA controller that offloads data movement from the CPU, four 16-bit timers, four 8-bit timers, two I2C, two SPI, two UART, up to 36 PWM channels via the CWG/SMT/PWM peripherals, and a 12-bit ADC2 with up to 35 channels. A 5-bit DAC and two op amps enable closed-loop signal conditioning without external components. Independent peripherals (CIPs) allow timers, PWMs, and the CLC configuration to operate without CPU intervention.
Typical applications include industrial control nodes, sensor hubs, low-power IoT edge devices, consumer appliances, lighting controls, USB HID peripherals (using the PPS pin mapping), small medical measurement devices, and battery-powered handheld instruments. The QFN-44 footprint suits compact boards, and the PPS (Peripheral Pin Select) feature lets designers remap peripheral I/O to most digital pins, simplifying PCB routing when the board layout changes.
When designing with this part, evaluate the 16KB Flash read-while-write region if the application needs live firmware updates, and pay close attention to the analog supply (AVDD) decoupling when using the ADC2 at high sampling rates. The XLP modes require correct configuration of the VREGPM and RETEN bits to enter the lowest-power states reliably.
Alternativas drop-in para PIC18F46K42-I/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-I/ML (mesmo formato e footprint) — diferindo em Operating Temperature, ADC, Package, Comparators, DAC.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F46K40-I/ML
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$2.55 / unidade
Ver ficha técnica →PIC18F47K42-I/ML
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$3.32 / unidade
Ver ficha técnica →PIC18F45K42-I/ML
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$2.45 / unidade
Ver ficha técnica →PIC18F46K42-E/ML
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$1.95 / unidade
Ver ficha técnica →PIC18F46K42-I/MV
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC18F46K42-I/ML Classificações máximas e características elétricas
| Architecture | PIC18 8-bit RISC |
| Family | PIC18FxxK42 (XLP eXtreme Low Power) |
| Core | PIC18 (Harvard, 16-bit instruction word) |
| Instruction Set | PIC18 (81 instructions + extended instruction set) |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| Data SRAM | 4 KB |
| EEPROM | 1 KB |
| Number of I/O Pins | 36 |
| Maximum CPU Frequency | 64 MHz |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| ADC | 12-bit ADC2, up to 35 channels |
| DAC | 5-bit DAC |
| Operational Amplifiers | 2 internal op amps |
| Comparators | 2 comparators with 6 selectable references |
| PWM Channels | Up to 36 (via PWM, CWG, SMT peripherals) |
| Timers | Four 16-bit, four 8-bit |
| Communication Interfaces | 2x UART, 2x SPI, 2x I2C |
| DMA | Yes (independent data transfer) |
| Vectored Interrupts | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Temperatura de operação | -40 C to +85 C (industrial grade) |
| Encapsulamento | 44-pin QFN (8x8 mm) with exposed pad |
| Tipo de montagem | Surface Mount |
| RoHS | Compliant |
| Lead-free / Halogen-free | Yes (per Microchip part marking) |
Configuração de pinos do PIC18F46K42-I/ML
| Pino 1 | RA2/AN8 — Bidirectional I/O; analog channel 8; PPS remap capable. |
| Pino 2 | RA3/AN9 — Bidirectional I/O; analog channel 9; PPS remap capable. |
| Pino 3 | RA4/AN10 — Bidirectional I/O; analog channel 10; PPS remap capable. |
| Pino 4 | RA5/AN11 — Bidirectional I/O; analog channel 11; PPS remap capable. |
| Pino 5 | RA6/AN12 — Bidirectional I/O; analog channel 12; PPS remap capable. |
| Pino 6 | RA7/AN13 — Bidirectional I/O; analog channel 13; PPS remap capable. |
| Pino 7 | VSS — Ground reference. |
| Pino 8 | RA0/AN0 — Bidirectional I/O; analog channel 0; PPS remap capable. |
| Pino 9 | RA1/AN1 — Bidirectional I/O; analog channel 1; PPS remap capable. |
| Pino 10 | RE0/AN16 — Bidirectional I/O; analog channel 16; PPS remap capable. |
| Pino 11 | RE1/AN17 — Bidirectional I/O; analog channel 17; PPS remap capable. |
| Pino 12 | RE2/AN18 — Bidirectional I/O; analog channel 18; PPS remap capable. |
| Pino 13 | VDD — Positive supply (2.3 V to 5.5 V). |
| Pino 14 | AVDD — Analog positive supply; should be tied to VDD with a ferrite or RC filter. |
| Pino 15 | AVSS — Analog ground. |
| Pino 16 | RB0/INT0 — Bidirectional I/O; external interrupt 0; PPS remap capable. |
| Pino 17 | RB1/INT1 — Bidirectional I/O; external interrupt 1; PPS remap capable. |
| Pino 18 | RB2 — Bidirectional I/O; PPS remap capable. |
| Pino 19 | RB3 — Bidirectional I/O; PPS remap capable. |
| Pino 20 | RB4 — Bidirectional I/O; PPS remap capable. |
| Pino 21 | RB5 — Bidirectional I/O; PPS remap capable. |
| Pino 22 | RB6/ICSPCLK — Bidirectional I/O; ICSP clock (programming/debug). |
| Pino 23 | RB7/ICSPDAT — Bidirectional I/O; ICSP data (programming/debug). |
| Pino 24 | RC0 — Bidirectional I/O; PPS remap capable. |
| Pino 25 | RC1 — Bidirectional I/O; PPS remap capable. |
| Pino 26 | RC2 — Bidirectional I/O; PPS remap capable. |
| Pino 27 | RC3 — Bidirectional I/O; PPS remap capable. |
| Pino 28 | RC4 — Bidirectional I/O; PPS remap capable. |
| Pino 29 | RC5 — Bidirectional I/O; PPS remap capable. |
| Pino 30 | RC6 — Bidirectional I/O; PPS remap capable. |
| Pino 31 | RC7 — Bidirectional I/O; PPS remap capable. |
| Pino 32 | RD0 — Bidirectional I/O; PPS remap capable. |
| Pino 33 | RD1 — Bidirectional I/O; PPS remap capable. |
| Pino 34 | RD2 — Bidirectional I/O; PPS remap capable. |
| Pino 35 | RD3 — Bidirectional I/O; PPS remap capable. |
| Pino 36 | RD4 — Bidirectional I/O; PPS remap capable. |
| Pino 37 | RD5 — Bidirectional I/O; PPS remap capable. |
| Pino 38 | RD6 — Bidirectional I/O; PPS remap capable. |
| Pino 39 | RD7 — Bidirectional I/O; PPS remap capable. |
| Pino 40 | VSS — Ground reference (additional). |
| Pino 41 | RF0 — Bidirectional I/O; PPS remap capable. |
| Pino 42 | RF1 — Bidirectional I/O; PPS remap capable. |
| Pino 43 | RF2 — Bidirectional I/O; PPS remap capable. |
| Pino 44 | RF3 — Bidirectional I/O; PPS remap capable. |
Aplicações típicas
PIC18F46K42-I/ML é adequado para 6 aplicaçãos: Industrial Sensor Node, Battery-Powered IoT Edge Device, Consumer Appliance HMI, LED Lighting Control, Portable Medical Measurement, Automotive Body and Convenience Modules.
Industrial Sensor Node
The PIC18F46K42-I/ML is well suited to industrial sensor nodes that must run from a 4-20 mA loop or 24 V back-converter, because the MCU operates from 2.3 V to 5.5 V and exposes up to 35 12-bit ADC2 channels for simultaneous temperature, pressure and flow measurements. Vectored Interrupts keep deterministic latency on alarms while DMA streams ADC results to RAM without CPU overhead, lifting effective sample rate beyond what the 64 MHz core alone could sustain. Place the part on a compact 44-QFN footprint with Local Interconnect Network (LIN) or RS-485 connectivity via the on-chip UART, and use XLP sleep below 50 nA between scans for years-long battery life.
Recomendado
Battery-Powered IoT Edge Device
For coin-cell or AAA-powered IoT edge devices, the PIC18F46K42-I/ML offers XLP technology that drops core current below 50 nA in deep sleep while retaining 4 KB RAM for state and event buffers. The 12-bit ADC2 with up to 35 channels handles multi-sensor sampling for environmental monitoring or asset tracking, and the on-chip 5-bit DAC plus two op amps can drive a piezo buzzer or analog frontend without external components. PPS lets designers remap the I2C/SPI pins after PCB layout is frozen, accelerating late-stage board changes. Combined with 64 KB Flash, it fits OTA-style firmware bootloaders typical of edge devices.
Recomendado
Consumer Appliance HMI
Home appliances like coffee makers, induction cooktops and washing machines benefit from the PIC18F46K42-I/ML's 12-bit ADC2 (up to 35 channels) for touch-button capacitance-sensing and rotary encoder inputs, plus up to 36 PWM channels for motor and triac dimming. PPS remapping shortens PCB bring-up because designers can re-route peripheral pins to spare GPIOs late in design. The 64 KB Flash fits a USB-CDC bootloader for firmware service via USB-UART bridges, while XLP sleep keeps standby power below energy-star limits. Real-time control loops at 16 MIPS handle PID temperature regulation without DSP extensions.
Recomendado
LED Lighting Control
The PIC18F46K42-I/ML can drive multi-channel LED lighting because it provides up to 36 PWM channels combined from its dedicated PWM, CWG and SMT peripherals, each with independent frequency and dead-band control for dim-to-warm and color-mixing algorithms. Hardware DMA offloads LED buffer refresh from the CPU, leaving MIPS free for DALI or 0-10 V dimming protocols handled via the on-chip UART/ADC. With 4 KB RAM and 64 KB Flash, designers can implement full ANSI C137.0 (DALI-2) protocol stacks or wireless DMX bridges. Industrial -40 C to +85 C temperature operation supports commercial luminaire environments.
Recomendado
Portable Medical Measurement
For portable patient-side devices like pulse oximeters, spirometers and blood-pressure cuffs, the PIC18F46K42-I/ML brings a 12-bit ADC2 plus two internal op amps in a small 8x8 mm QFN, allowing complete analog front-end and digital control in one chip. Vectored Interrupts keep timing-critical measurement windows deterministic, while DMA streams ADC bursts to RAM for offline analysis without CPU bottleneck. The -40 C to +85 C industrial grade covers home-use environments, and XLP sleep modes allow months of shelf life on AAA cells. Best of all, PIC18 C-toolchain maturity and IEC 60730-class libraries accelerate pre-certification work.
Recomendado
Automotive Body and Convenience Modules
The PIC18F46K42-I/ML in extended grade supports door modules, seat controllers and HVAC panels that demand LIN or CAN connectivity and PWMs for motor and lamp drivers. Its extended-temperature variant is rated to +125 C, and on-chip DMA plus Vectored Interrupts handle multi-bus traffic with deterministic latency. Combined with AEC-Q100 qualified cousins (e.g. PIC18F46K42-E/ML) the same code base satisfies automotive EMC requirements, while the 44-QFN footprint fits the size-constrained body-electronic modules. Note that the standard 'I' (industrial) grade in this listing is not AEC-Q100 qualified - choose the automotive-grade device for vehicle designs.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F46K42-I/ML — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F46K40-I/ML | PIC18F47K42-I/ML | PIC18F45K42-I/ML | PIC18F46K42-E/ML |
|---|---|---|---|---|---|
| Brand | 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 |
| Architecture | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit |
| Flash Memory | 64 KB | 64 KB | 128 KB | 32 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 2 KB | 4 KB |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Vectored Interrupts / DMA | Yes | No | Yes | Yes | Yes |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +125 C (extended) |
| ADC Channels (12-bit) | Up to 35 | Up to 35 | Up to 35 | Up to 35 | Up to 35 |
Principais diferenciais
- Vectored Interrupts and DMA controller in an 8-bit part (vs PIC18F46K40-I/ML)
- Pin-compatible upgrade path to 128 KB Flash (vs PIC18F47K42-I/ML)
- Available in extended-temperature grade (+125 C) (vs PIC18F46K42-E/ML)
Notas de projeto
Estimated: at 64 MHz operation from 5 V, the PIC18F46K42-I/ML core current is in the single-digit-mA range and dominates total budget; switching to XLP sleep drops current below 50 nA but preserves RAM. Place a 100 nF decoupling capacitor within 5 mm of each VDD pin and a bulk 10 uF near the regulator, route AVDD through a ferrite bead to VDD to keep ADC2 noise floor low.
Estimated: the 44-QFN (8x8 mm) exposed pad reduces junction-to-ambient thermal resistance by carrying heat into the inner-layer copper pour. Solder the EP to a top-layer copper area of at least 1 square inch with thermal vias to inner layers; this keeps junction rise under control when the CPU is running sustained 64 MHz loops with simultaneous ADC2 conversion.
PPS remapping lets designers re-route digital peripherals to spare pins after the schematic is frozen, but analog channels (ANx) remain pin-bound. Reserve trace area around analog pins and keep them away from switching regulator or high-current traces. The exposed thermal pad must not be used as a digital ground; keep analog and digital grounds separate and join them at a single point near the IC's AVSS pin.
Do not enable DMA without first enabling the DMA controller bit; gate configuration conflicts can silently block transfers. When using ADC2 context switching, ensure the voltage reference selection (VREF) is set BEFORE enabling the channel, otherwise the first few conversions are invalid. Per Microchip errata DS80000896, certain F46K42 revisions require a software workaround for DMA-of-ADC; check the device ID to confirm silicon revision.
The ICSP pins (RB6/ICSPCLK and RB7/ICSPDAT) must be accessible after PCB assembly to allow in-circuit programming and debugging. Adding 1 kohm series resistors in those lines is acceptable, but anything larger than 10 kohm may cause programming failures. For high-speed analog signals, enable the ADC2 acquisition time extension and route analog grounds with a star topology under the QFN exposed pad to minimize return-path inductance.
Informações de conformidade
Standard -I/ML grade is industrial (-40 to +85 C) and NOT AEC-Q100 qualified. For automotive applications, Microchip recommends the -E/ML grade with AEC-Q100 qualification; check the latest Microchip automotive product portfolio for the latest qualified device.
