PIC32MX320F032HT-40I/MR - 32-bit MCU 40MHz 32KB Flash 64-VQFN
N.º de pieza: PIC32MX320F032HT-40I/MR ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $5.96 | $5,96 |
| 10 | $5.42 | $54,20 |
| 100 | $4.85 | $485,00 |
| 500 | $4.28 | $2.140,00 |
| 1.000 | $3.78 | $3.780,00 |
PIC32MX320F032HT-40I/MR Descripción general
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and programmable I/O peripherals. PIC32MX devices are positioned in Microchip's portfolio between 8-bit PIC16/PIC18 MCUs and higher-end Cortex-M parts, offering 32-bit MIPS32 M4K performance at cost points closer to 16-bit MCUs. The PIC32MX3xx/4xx family targets general-purpose embedded applications and USB connectivity, with the PIC32MX320 sub-family specifically offering a balance of small footprint and USB full-speed on-chip transceiver.
Key features include 32 KB Flash program memory, 8 KB SRAM, a 10-bit ADC with up to 16 channels, four 16-bit timers/counters, two UART modules, two SPI interfaces, two I2C modules, USB 2.0 full-speed device/host/OTG, a real-time clock calendar (RTCC), and 53 general-purpose digital I/O pins. The integrated USB transceiver eliminates the need for external PHY components in many designs, reducing BOM cost and PCB area. The MIPS32 M4K core supports the MIPS16e instruction set for code density improvements.
Architecture is based on the MIPS32 M4K core with 5-stage pipeline, hardware multiply/divide, and a deterministic interrupt controller. The device operates from 2.3V to 3.6V, supports industrial temperature range (-40C to +85C for the I-suffix), and provides a JTAG/2-wire programming/debug interface via ICSP. The 64-VQFN (MR) package uses an exposed pad for thermal dissipation.
Typical applications include USB peripherals (HID, CDC, mass storage), industrial control modules, consumer electronics, data loggers, and home appliances. The combination of integrated USB, generous RAM for USB buffers, and small 9x9 mm QFN makes it well suited to space-constrained designs that need USB connectivity without external PHY cost.
When designing with this part, plan for a stable 3.3V supply (USB transceiver has tight tolerance requirements), keep the USB DP/DM traces length-matched and 90-ohm differential impedance, and ensure the exposed pad has adequate thermal vias. Configuration bits must be set before code execution; Microchip's MPLAB X IDE and Harmony framework provide code generation to streamline this.
This page synthesizes distributor pricing, same-package drop-in alternatives within the PIC32MX family, and practical design considerations not consolidated in the manufacturer datasheet.
Alternativas directas para PIC32MX320F032HT-40I/MR — 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 PIC32MX320F032HT-40I/MR (mismo factor de forma y huella) — difiere en Package, ADC, USB, Program Memory (Flash), Operating Temperature.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC32MX320F032H-40I/MR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC32MX340F064H-64I/MR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC32MX340F128H-64I/MR
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
PIC32MX360F512L-40I/MR
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
PIC32MX320F032H-40I/PT
✅ Sustitución directa✓ En stock
$3.32 / unidad
Ver hoja de datos →PIC32MX320F032HT-40I/MR Valores máximos y características eléctricas
| Core Architecture | MIPS32 M4K |
| Core Size | 32-bit |
| Maximum CPU Clock | 40 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| RAM | 8 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| Operating Temperature (I suffix) | -40 C to +85 C |
| I/O Pins | 53 |
| ADC | 10-bit, up to 16 channels |
| USB | USB 2.0 Full-Speed Device/Host/OTG with on-chip transceiver |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| 16-bit Timers | 5 (Timer1-Timer5) |
| RTCC | Yes (Real-Time Clock Calendar) |
| Encapsulado | 64-pin VQFN (MR) 9x9 mm with exposed pad |
| Tipo de montaje | Surface Mount |
| Nivel MSL | 3 (168 hours) |
| Lead-Free / RoHS | Lead-Free, RoHS compliant |
Guía de configuración de pines de PIC32MX320F032HT-40I/MR 64-pin vqfn (mr) 9x9 mm with exposed pad
Configuración de pines para PIC32MX320F032HT-40I/MR (encapsulado 64-pin vqfn (mr) 9x9 mm with exposed pad). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para PIC32MX320F032HT-40I/MR.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
PIC32MX320F032HT-40I/MR es adecuado para 6 aplicacións: USB HID Peripheral (Keyboard/Mouse/Gamepad), USB CDC Virtual COM Port Bridge, Industrial Sensor Data Logger, Consumer Appliance Control Board, USB Mass Storage / Data Transfer Device, Educational Development / Prototyping Platform.
USB HID Peripheral (Keyboard/Mouse/Gamepad)
The PIC32MX320F032HT-40I/MR's integrated USB 2.0 full-speed transceiver with device/host/OTG support and 8 KB RAM is well-matched to USB HID class peripherals. At 40 MHz, the MIPS32 M4K core executes the HID report descriptor and endpoint servicing loop with comfortable headroom; the on-chip transceiver eliminates the external PHY cost that drives many competitors' BOM higher. Place the device between the USB connector (with 90-ohm differential DP/DM routing) and the user I/O (buttons, encoders, LEDs); use Microchip's MLA USB stack for the HID framework. Compared to a discrete MCU + external PHY approach, this part typically saves 1.50-2.50 USD in BOM at qty 1000.
Recomendado
USB CDC Virtual COM Port Bridge
For industrial USB-to-UART bridges, the PIC32MX320F032HT-40I/MR pairs the USB full-speed device port with two on-chip UART modules to deliver CDC ACM virtual COM functionality without external bridge ICs such as FTDI parts. The 8 KB RAM comfortably holds USB endpoint buffers (typically 256-512 bytes each) plus CDC line-coding state. The 53 GPIO allow additional RS-232/RS-485 direction-control signals. Operate at 3.3V and provide ESD protection (USBLC6-2 or equivalent) on DP/DM for industrial surge compliance. Pricing at qty 100 is approximately 4.85 USD, undercutting most FTDI bridge ICs while adding programmable GPIO.
Recomendado
Industrial Sensor Data Logger
The 16-channel 10-bit ADC, RTCC, and 32 KB Flash of the PIC32MX320F032HT-40I/MR suit low-power sensor data loggers that time-stamp and store readings to internal Flash. The 8 KB RAM serves as a circular buffer; the RTCC drives time-stamping at 1 Hz or slower. Industrial temperature range (-40 to +85 C, I-suffix) and 2.3-3.6 V operation allow direct Li-ion battery or 3.3V regulated supply use. Connect sensors via the two SPI ports (for digital sensors like accelerometers) and the ADC channels (for analog sensors); use a 32.768 kHz crystal for RTCC accuracy. Cost at qty 1000 (3.78 USD) enables price-sensitive IoT edge node designs.
Recomendado
Consumer Appliance Control Board
Appliance control boards (coffee machines, washing machines, small kitchen appliances) benefit from the PIC32MX320F032HT-40I/MR's combination of USB (for factory programming or firmware update), 53 GPIO (driving relays, triacs, LEDs, keypads, displays), and five 16-bit timers (PWM control for motor/solenoid drivers). The 32 KB Flash holds a real-time operating system plus application code; the 64-VQFN (9x9 mm) footprint fits compact appliance PCBs. Industrial temperature rating meets kitchen-environment requirements. Use the I2C ports for sensor expansion (temperature, humidity) and UART for diagnostics.
Recomendado
USB Mass Storage / Data Transfer Device
USB mass-storage class devices (USB sticks with custom functions, USB data loggers, USB-bootable diagnostic tools) leverage the PIC32MX320F032HT-40I/MR's integrated USB 2.0 full-speed and 8 KB RAM for SCSI/BBB command handling. The two SPI ports connect to an external SPI Flash (e.g. 25Q series) for storage; the 32 KB internal Flash holds bootloader and firmware. For higher throughput designs, consider the pin-compatible PIC32MX340F064H-64I/MR with 16 KB RAM to handle larger USB transfers without back-pressure. The 40 MHz CPU is sufficient for full-speed USB (12 Mbps).
Recomendado
Educational Development / Prototyping Platform
Universities, makers, and product-development teams use the PIC32MX320F032HT-40I/MR as the MCU on PIC32 starter kits and custom prototype boards. The 32 KB Flash supports moderate code sizes typical of university coursework (RTOS, USB, signal processing demos); 8 KB RAM handles RTOS tasks and stack. Microchip's MPLAB X IDE, Harmony framework, and PICkit 5 in-circuit debugger provide full toolchain support. The 64-VQFN package is breadboard-friendly via breakout boards. Pricing at qty 1 (5.96 USD) makes it accessible for student projects, and the same-package drop-in family enables easy migration as code grows.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC32MX320F032HT-40I/MR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC32MX320F032H-40I/MR | PIC32MX340F064H-64I/MR | PIC32MX340F128H-64I/MR | PIC32MX360F512L-40I/MR |
|---|---|---|---|---|---|
| Package | VQFN-64 (MR) 9x9 mm | VQFN-64 (MR) 9x9 mm | VQFN-64 (MR) 9x9 mm | VQFN-64 (MR) 9x9 mm | VQFN-64 (MR) 9x9 mm |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit |
| Max CPU Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Flash | 32 KB | 32 KB | 64 KB | 128 KB | 512 KB |
| RAM | 8 KB | 8 KB | 16 KB | 32 KB | 32 KB |
| USB | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG |
| ADC | 10-bit, 16 ch | 10-bit, 16 ch | 10-bit, 16 ch | 10-bit, 16 ch | 10-bit, 16 ch |
| I/O Pins | 53 | 53 | 53 | 53 | 53 |
| Operating Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
Diferenciadores clave
- Integrated USB 2.0 full-speed transceiver on-chip (frente a Discrete MCU + external FTDI bridge approach)
- Same 64-VQFN footprint across the PIC32MX3xx/4xx family (frente a PIC32MX340F064H-64I/MR)
- 40 MHz MIPS32 M4K core with 5-stage pipeline (frente a 8-bit PIC16/PIC18 microcontrollers)
Notas de diseño
The 64-VQFN (MR) package requires a properly designed land pattern and a central thermal pad connected to the ground plane. Place thermal vias in the exposed pad area (typical 0.3 mm via diameter, 0.5-1.0 mm pitch grid) to dissipate the 40 MHz operating power and any self-heating during sustained USB enumeration. Solder paste stencil aperture should be split (multi-up pattern) for the thermal pad to prevent tombstoning and ensure reliable solder joint formation.
USB DP and DM traces must be routed as a 90-ohm differential pair with length matching to within 150 mils. Keep the pair on the same layer, avoid splits in the reference ground plane, and place the ESD protection diode (e.g. USBLC6-2SC6) within 3 mm of the USB connector. Series ferrite beads are not recommended on DP/DM as they degrade the high-speed eye diagram; place the common-mode choke at the connector side instead.
The PIC32MX320F032HT-40I/MR requires a clean 3.3V supply with tolerance per the PIC32MX3XX/4XX datasheet (document 61143H). Place a 10 uF bulk capacitor and a 100 nF decoupling capacitor as close as possible to each VDD pin pair. For USB applications, the VBUS sense pin (if used for host) must be connected to the 5V VBUS through a resistive divider; for device-only USB, VBUS sensing is optional but recommended for battery-aware behavior.
Configuration bits (fuses) must be set before code execution. Common pitfalls: leaving JTAG enabled when not needed (consumes power and frees an I/O pin), wrong oscillator selection (PLL settings vs. external crystal), and failing to enable the USB PLL before USB enumeration. Use MPLAB X IDE's Configuration Bits window or the Harmony Clock Manager to set these. The device is industrial temperature grade (I-suffix), so do not substitute with non-I parts in industrial designs.
Place the 8 MHz primary crystal (or resonator) within 5 mm of the OSC1/OSC2 pins with short, symmetric traces and a guard ring to ground. For USB designs, the 48 MHz USB clock is derived from the primary oscillator via the PLL; accurate primary oscillator frequency is critical for USB compliance. Keep the analog AVSS/AVDD pair separated from digital VDD/VSS with a star-ground topology if analog ADC accuracy is important.
Información de cumplimiento
Lead-free and RoHS compliant per Microchip product page. Not AEC-Q100 qualified; for automotive designs consider PIC32MX series with automotive grade suffix. Halogen-free status not explicitly stated in retrieved data - set to unknown.
