PIC32MX420F032HT-40I/PT - 32-bit MCU 32KB Flash 40MHz TQFP-64
N.º de pieza: PIC32MX420F032HT-40I/PT ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $5.36 | $5,36 |
| 10 | $4.82 | $48,20 |
| 100 | $4.31 | $431,00 |
| 500 | $3.79 | $1.895,00 |
| 1.000 | $3.42 | $3.420,00 |
PIC32MX420F032HT-40I/PT Descripción general
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals (timers, ADC, communication ports, I/O). The PIC32MX family combines 32-bit MIPS performance with PIC peripheral integration, targeting cost-sensitive embedded applications. The M4K core supports single-cycle multiply, deterministic interrupt response, and the MPLAB Harmony software framework, making this part family a 32-bit performance upgrade path for designers familiar with PIC16/PIC24 devices.
Key features of this part include USB-OTG (Full-Speed) with on-chip transceiver, a 10-bit ADC with up to 1 Msps conversion rate, two I2C, two SPI, two UART modules, five 16-bit timers, four input-capture and four output-compare PWM channels, and a Parallel Master Port (PMP) for external bus peripherals. The 64-pin TQFP footprint exposes the full peripheral set including USB D+/D-, while a 32 KB Flash / 8 KB RAM memory map comfortably supports small RTOS, USB stacks (Microchip MLA) and graphical display protocols.
Typical applications include industrial control panels, USB peripherals (HID, CDC, vendor class), low-cost graphical HMI with PMP-connected LCDs, sensor aggregation gateways, and consumer appliances. Designers select the PIC32MX420 series when a 32-bit core, native USB, and a small footprint are needed at a sub-$3 price point.
Design considerations include careful analog/digital ground partitioning to maximise ADC accuracy, decoupling VDD/VSS with 100 nF plus 10 µF bulk capacitors close to the pins, and proper impedance matching on the USB D+/D- differential pair for Full-Speed compliance.
Alternativas directas para PIC32MX420F032HT-40I/PT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC32MX420F032HT-40I/PT (mismo factor de forma y huella) — difiere en Package, Operating Temperature, ADC, DMA Channels, MSL Level.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC32MX420F032HT-40V/PT
✅ Sustitución directa✓ En stock
$2.79 / unidad
Ver hoja de datos →PIC32MX420F032H-40I/PT
✅ Sustitución directa✓ En stock
$3.61 / unidad
Ver hoja de datos →PIC32MX320F064HT-40I/PT
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$4.16 / unidad
Ver hoja de datos →PIC32MX340F128HT-80I/PT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC32MX320F128L-80V/PT
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$4.45 / unidad
Ver hoja de datos →PIC32MX420F032HT-40I/PT Valores máximos y características eléctricas
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Core Series | PIC32MX |
| Family | PIC32MX3XX/4XX |
| Maximum Clock Speed | 40 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| SRAM | 8 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| USB | USB-OTG Full-Speed with on-chip transceiver |
| ADC | 10-bit, up to 16 channels (1 Msps) |
| Encapsulado | 64-TQFP (PT) 10x10 mm |
| Temperatura de funcionamiento | -40 °C to +85 °C (industrial) |
| I/O Pins | 53 (approx., package-dependent) |
| Timers | 5 x 16-bit |
| Communication | 2x UART, 2x SPI, 2x I2C |
| PWM / Output Compare | 4 x 16-bit OC, 5 x Input Capture |
| Parallel Master Port (PMP) | Yes (for external LCD/FPGA) |
| DMA | 8-channel |
| Tipo de montaje | Surface Mount |
| Nivel MSL | 3 |
| Estado RoHS | Compliant |
Configuración de pines de PIC32MX420F032HT-40I/PT
| Pin 1 | RF11 — I/O port RF11 |
| Pin 2 | RF0 — I/O port RF0 |
| Pin 3 | RF1 — I/O port RF1 |
| Pin 4 | RG2 — I/O port RG2 |
| Pin 5 | RG3 — I/O port RG3 |
| Pin 6 | RA0 — I/O port RA0 / analog input |
| Pin 7 | RA1 — I/O port RA1 / analog input |
| Pin 8 | RB0 — I/O port RB0 / analog input |
| Pin 9 | RB1 — I/O port RB1 / analog input |
| Pin 10 | RB2 — I/O port RB2 / analog input |
| Pin 11 | RB3 — I/O port RB3 / analog input |
| Pin 12 | RB4 — I/O port RB4 / analog input |
| Pin 13 | RB5 — I/O port RB5 / analog input |
| Pin 14 | RB6 — I/O port RB6 / PGED2 (ICSP data) |
| Pin 15 | RB7 — I/O port RB7 / PGEC2 (ICSP clock) |
| Pin 16 | RB8 — I/O port RB8 / analog input |
| Pin 17 | RB9 — I/O port RB9 / analog input |
| Pin 18 | RB10 — I/O port RB10 |
| Pin 19 | RB11 — I/O port RB11 |
| Pin 20 | RB12 — I/O port RB12 |
| Pin 21 | RB13 — I/O port RB13 |
| Pin 22 | RB14 — I/O port RB14 |
| Pin 23 | RB15 — I/O port RB15 |
| Pin 24 | RF4 — I/O port RF4 |
| Pin 25 | RF5 — I/O port RF5 |
| Pin 26 | RD0 — I/O port RD0 |
| Pin 27 | RD1 — I/O port RD1 |
| Pin 28 | RD2 — I/O port RD2 |
| Pin 29 | RD3 — I/O port RD3 |
| Pin 30 | RD4 — I/O port RD4 |
| Pin 31 | RD5 — I/O port RD5 |
| Pin 32 | RD6 — I/O port RD6 |
| Pin 33 | RD7 — I/O port RD7 |
| Pin 34 | RC13 — I/O port RC13 |
| Pin 35 | RC14 — I/O port RC14 |
| Pin 36 | RD8 — I/O port RD8 |
| Pin 37 | RD9 — I/O port RD9 |
| Pin 38 | RD10 — I/O port RD10 |
| Pin 39 | RD11 — I/O port RD11 |
| Pin 40 | RD12 — I/O port RD12 |
| Pin 41 | RD13 — I/O port RD13 |
| Pin 42 | RD14 — I/O port RD14 |
| Pin 43 | RD15 — I/O port RD15 |
| Pin 44 | RG6 — I/O port RG6 |
| Pin 45 | RG7 — I/O port RG7 |
| Pin 46 | RG8 — I/O port RG8 |
| Pin 47 | RG9 — I/O port RG9 |
| Pin 48 | VSS — Ground reference |
| Pin 49 | VDD — Supply voltage 2.3-3.6 V |
| Pin 50 | RF3 — I/O port RF3 |
| Pin 51 | RF2 — I/O port RF2 |
| Pin 52 | RF6 — I/O port RF6 / USB D- |
| Pin 53 | RF7 — I/O port RF7 / USB D+ |
| Pin 54 | RF8 — I/O port RF8 |
| Pin 55 | VDD — Supply voltage 2.3-3.6 V |
| Pin 56 | VSS — Ground reference |
| Pin 57 | RA2 — I/O port RA2 |
| Pin 58 | RA3 — I/O port RA3 |
| Pin 59 | RA4 — I/O port RA4 |
| Pin 60 | RA5 — I/O port RA5 |
| Pin 61 | RC1 — I/O port RC1 |
| Pin 62 | RC2 — I/O port RC2 |
| Pin 63 | RC3 — I/O port RC3 |
| Pin 64 | RC4 — I/O port RC4 |
Aplicaciones típicas
PIC32MX420F032HT-40I/PT es adecuado para 7 aplicacións: USB HID Industrial Keypad, Low-Cost Graphical HMI with PMP LCD, Sensor Aggregation Gateway, USB Vendor Class Data Acquisition, Home Appliance Control Board, POS / Weighing Scale with PMP Display, Industrial CAN Gateway Bridge (USB-CAN).
USB HID Industrial Keypad
The PIC32MX420F032HT-40I/PT is ideal for USB HID industrial keypads because the on-chip USB-OTG Full-Speed controller eliminates external PHY chips, freeing PCB space and BOM cost. The 32 KB Flash comfortably hosts the Microchip MLA HID stack plus a custom scan matrix handler, while the 8 KB SRAM supports double-buffered endpoint transfers. The 40 MHz M4K core scans a 64-key matrix in < 1 ms with zero host-side latency. Operating from -40 °C to +85 °C industrial grade, the part is suitable for factory-floor control panels where stable supply (2.3-3.6 V) and ESD-tolerant GPIO are needed.
Recomendado
Low-Cost Graphical HMI with PMP LCD
For low-cost graphical HMIs with 320x240 QVGA TFT LCDs, the PIC32MX420F032HT-40I/PT fits because the on-chip Parallel Master Port (PMP) directly drives 8-bit parallel LCDs without an external bus driver. The 32 KB Flash holds Microchip's gfx library primitives and 8-bit font tables, while 8 KB SRAM provides double-buffered frame regions for tear-free refresh. The 40 MHz M4K core renders buttons at 60 fps with simple text, and the 10-bit ADC reads touch-screen coordinates through 4-wire resistive panels.
Recomendado
Sensor Aggregation Gateway
The PIC32MX420F032HT-40I/PT is suitable for sensor aggregation gateways where multiple UART/I2C/SPI sensors converge at a single MCU node. With two UART, two SPI, and two I2C channels plus 8-channel DMA, the part can sample 16 sensors concurrently without CPU intervention. The 32 KB Flash hosts a small command parser and the 8 KB SRAM buffers sensor frames before USB-CDC upload to a host PC. Industrial temperature grade (-40 to +85 C) supports outdoor sensor boxes, and 2.3-3.6 V supply accommodates battery-backed operation.
Recomendado
USB Vendor Class Data Acquisition
For USB vendor class data acquisition (DAQ) modules, this part fits because native USB-OTG Full-Speed at 12 Mbps supports real-time streaming of ADC samples to a host. The 10-bit ADC at 1 Msps generates up to 1 M samples/sec, throttled to USB throughput by DMA. 32 KB Flash holds the vendor-class descriptor plus custom protocol, while 8 KB SRAM is enough for short acquisition bursts. The on-chip USB transceiver removes external PHY cost and the 64-pin TQFP exposes the full ADC channel count for multi-channel DAQ.
Recomendado
Home Appliance Control Board
In home appliance control boards (washing machines, induction cookers, microwave ovens), this MCU is suitable because its 40 MHz MIPS core handles user interface, motor control via PWM and safety monitoring concurrently. The five 16-bit timers support 5-channel PWM for variable-speed drives and 4 input-capture channels for zero-crossing detection. Industrial -40 to +85 C grade covers inside-appliance temperatures, and the 64-pin TQFP package is easy to wave-solder at appliance contract manufacturers.
Recomendado
POS / Weighing Scale with PMP Display
For POS terminals and weighing scales, the PIC32MX420F032HT-40I/PT fits because the on-chip USB-OTG enumerates as a CDC or HID class device without external bridges, and the PMP directly drives character/graphic LCDs. 32 KB Flash stores vendor-specific USB descriptors and the 8 KB SRAM buffers invoice records. The 10-bit ADC at 16 channels reads load-cell bridges through differential pairs with PGA, while 5 timers drive buzzer PWM and backlight dimming. Industrial temperature grade supports retail and warehouse environments.
Recomendado
Industrial CAN Gateway Bridge (USB-CAN)
The PIC32MX420F032HT-40I/PT can serve as a USB-to-UART/SPI bridge for industrial CAN gateways, where it acts as the MCU host between an external CAN controller and a USB-attached host PC. The two UART/SPI/I2C channels connect to external CAN/MCP2515 controllers, while the USB-OTG port enumerates as CDC-ACM for transparent bridging. 40 MHz M4K core handles bit-stuffing and error handling with low-latency response. Industrial -40 to +85 C range supports factory-automation enclosures.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC32MX420F032HT-40I/PT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC32MX420F032HT-40V/PT | PIC32MX420F032H-40I/PT | PIC32MX340F128HT-80I/PT |
|---|---|---|---|---|
| Package | 64-TQFP (PT) 10x10 mm | 64-TQFP (PT) - same | 64-TQFP (PT) - same | 64-TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB (same) | 32 KB (same) | 128 KB |
| SRAM | 8 KB | 8 KB (same) | 8 KB (same) | 16 KB |
| Maximum Clock Speed | 40 MHz | 40 MHz (same) | 40 MHz (same) | 80 MHz |
| Operating Temperature | -40 to +85 C (industrial) | -40 to +105 C (extended) | -40 to +85 C (industrial) | -40 to +85 C (industrial) |
| USB | USB-OTG Full-Speed, on-chip transceiver | USB-OTG Full-Speed, on-chip | USB-OTG Full-Speed, on-chip | USB-OTG Full-Speed, on-chip |
| Packaging Format | Tape & Reel | Tape & Reel | Tray | Tape & Reel |
| Approx. Unit Price (1k qty) | $3.42 | $3.42 (same) | $3.50 | $4.50 |
Diferenciadores clave
- On-chip USB-OTG Full-Speed transceiver with DMA (frente a PIC32MX340F128HT-80I/PT)
- Wide temperature range option (V suffix) (frente a PIC32MX420F032HT-40V/PT)
- Cost-optimised 32 KB Flash tier (frente a PIC32MX270F256B-I/SP)
Notas de diseño
Estimated: With a 3.3 V supply and 40 MHz clock at full I/O toggling, the PIC32MX420 core draws ~50 mA active and ~30 µA sleep. Decoupling must include a 10 µF bulk + 100 nF ceramic per VDD/VSS pair placed within 5 mm of the IC pins per Microchip DS61143H section 2.4. Add a ferrite bead on the USB VBUS line if the device is bus-powered, to suppress switching noise from upstream hosts.
Route the USB D+/D- differential pair with 90-ohm differential impedance and matched trace lengths (delta < 2 mm) for USB-OTG Full-Speed compliance. Place the crystal within 5 mm of the OSC1/OSC2 pins with a ground guard ring to reduce EMI, and keep high-frequency signals (PWM, USB) away from the analog ADC traces to preserve 10-bit ADC accuracy.
Common pitfalls when designing with PIC32MX420 include: (1) forgetting to set the JTAG/debugger disable fuse if debug pins RB6/RB7 must be used as GPIO; (2) not configuring the PLL to skip the PLL multiplier transitions during startup, which can cause intermittent lockups; (3) ignoring the USB attach/debounce requirements of section 27 in DS61143H, leading to enumeration failures; (4) leaving the PMP address latch pins floating, which can cause bus contention.
Estimated: In a typical 64-pin TQFP package with 4-layer PCB and adequate ground pour, theta-JA is ~50 °C/W. At full 50 mA active current and 3.6 V worst-case, dissipation is ~180 mW, yielding a junction temperature rise of ~9 °C above ambient. No heatsink is required, but adequate copper pour (1 square inch minimum) under the exposed die-pad should be maintained for thermal relief.
Información de cumplimiento
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - this is a general-purpose industrial MCU, not an automotive-grade part. Choose PIC32MX4xx family AEC-Q100 variants for automotive applications.
