PIC32MX120F032D-50I/ML - 50MHz 32-bit MCU 32KB Flash 44-QFN | Microchip
N.º de pieza: PIC32MX120F032D-50I/ML ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.1 | $3,10 |
| 10 | $2.85 | $28,50 |
| 100 | $2.45 | $245,00 |
| 500 | $2.2 | $1.100,00 |
| 1.000 | $1.98 | $1.980,00 |
PIC32MX120F032D-50I/ML Descripción general
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals on one die. The PIC32 family belongs to the broader taxonomy of 32-bit microcontrollers, which sit at the top of the embedded controller hierarchy alongside MCU -> embedded controller -> semiconductor IC. The M4K core executes the MIPS32 instruction set and pairs with peripheral pin select (PPS), which lets designers remap digital peripherals to nearly any I/O pin, dramatically simplifying PCB routing.
Key features include 50 MHz maximum CPU clock with less than 0.5 mA/MHz active current consumption, two I2S/SPI modules for audio codec and serial communication, a Parallel Master Port (PMP) for graphics interfaces, and a Charge Time Measurement Unit (CTMU) that supports Microchip's mTouch capacitive-touch buttons and sliders. The device operates across 2.3V to 3.6V and from -40C to +105C industrial temperature range.
The PIC32MX120F032D architecture uses a 5-stage pipeline Harvard structure with separate instruction and data buses, enabling single-cycle Flash access and deterministic interrupt latency. Its rich analog integration includes a 10-bit 1 Msps ADC with up to 28 input channels, comparators, and a 5-bit DAC for slope compensation, all sharing the same low-power CMOS process.
Typical applications include consumer audio peripherals with I2S codec interfaces, low-cost graphical HMIs using PMP-driven LCDs, capacitive touch human-machine interfaces for appliances, USB HID peripherals (when paired with an external transceiver), and industrial sensor nodes that benefit from PPS and CTMU integration.
When designing with this part, allocate at least 4 ground vias under the exposed pad (EP) for thermal dissipation and GND return, and keep the analog AVdd rail decoupled with a 10uF bulk plus a 100 nF ceramic as recommended in the Microchip PIC32MX1XX/2XX datasheet.
This page synthesizes distributor pricing, drop-in package equivalents, and practical design notes for the PIC32MX120F032D-50I/ML that go beyond the manufacturer datasheet and major distributor pages.
Alternativas directas para PIC32MX120F032D-50I/ML — 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 PIC32MX120F032D-50I/ML (mismo factor de forma y huella) — difiere en ADC, Package, Core Architecture, Active Current Consumption, Operating Temperature Range.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC32MX120F032DT-I/ML
✅ Sustitución directa✓ En stock
$1.92 / unidad
Ver hoja de datos →PIC32MX120F032D-I/ML
✅ Sustitución directa✓ En stock
$1.95 / unidad
Ver hoja de datos →PIC32MX120F032D-V/ML
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC32MX120F032BT-50I/ML
✅ Sustitución directa✓ En stock
$1.55 / unidad
Ver hoja de datos →PIC32MX120F032B-I/ML
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC32MX120F032D-50I/ML Valores máximos y características eléctricas
| Core Architecture | MIPS32 M4K RISC 32-bit |
| Maximum CPU Frequency | 50 MHz |
| Program Flash Memory | 32 KB (32K x 8) |
| Data SRAM | 8 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Active Current Consumption | < 0.5 mA / MHz |
| Rango de temperatura de funcionamiento | -40 C to +105 C |
| I/O Pins (Maximum) | 34 |
| Encapsulado | 44-QFN (8x8 mm) with EP |
| I2S / SPI Modules | 2 |
| Parallel Master Port (PMP) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Charge Time Measurement Unit (CTMU) | Yes (mTouch capacitive touch) |
| ADC | 10-bit, 1 Msps, up to 28 channels |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de PIC32MX120F032D-50I/ML
| Pin 1 | RP0/RG6 — Remappable peripheral I/O / Port G bit 6 |
| Pin 2 | RP1/RG7 — Remappable peripheral I/O / Port G bit 7 |
| Pin 3 | RP2/RG8 — Remappable peripheral I/O / Port G bit 8 |
| Pin 4 | MCLR — Master Clear (reset) input, drive low to reset |
| Pin 5 | Vdd — Positive supply voltage (2.3V to 3.6V) |
| Pin 6 | Vss — Ground reference |
| Pin 7 | OSC1/RC12 — Oscillator crystal input or external clock input |
| Pin 8 | OSC2/RC15 — Oscillator crystal output or external clock output |
| Pin 9 | RP3/RG9 — Remappable peripheral I/O / Port G bit 9 |
| Pin 10 | Vss — Ground reference |
| Pin 11 | RP4/RB0 — Remappable peripheral I/O / Port B bit 0 |
| Pin 12 | RP5/RB1 — Remappable peripheral I/O / Port B bit 1 |
| Pin 13 | RP6/RB2 — Remappable peripheral I/O / Port B bit 2 |
| Pin 14 | RP7/RB3 — Remappable peripheral I/O / Port B bit 3 |
| Pin 15 | RP8/RB4 — Remappable peripheral I/O / Port B bit 4 |
| Pin 16 | RP9/RB5 — Remappable peripheral I/O / Port B bit 5 |
| Pin 17 | Vdd — Positive supply voltage (2.3V to 3.6V) |
| Pin 18 | RP10/RB6 — Remappable peripheral I/O / Port B bit 6 |
| Pin 19 | RP11/RB7 — Remappable peripheral I/O / Port B bit 7 |
| Pin 20 | RP12/RB8 — Remappable peripheral I/O / Port B bit 8 |
| Pin 21 | RP13/RB9 — Remappable peripheral I/O / Port B bit 9 |
| Pin 22 | Vss — Ground reference |
| Pin 23 | RP14/RB10 — Remappable peripheral I/O / Port B bit 10 |
| Pin 24 | RP15/RB11 — Remappable peripheral I/O / Port B bit 11 |
| Pin 25 | RP16/RB12 — Remappable peripheral I/O / Port B bit 12 |
| Pin 26 | RP17/RB13 — Remappable peripheral I/O / Port B bit 13 |
| Pin 27 | RP18/RB14 — Remappable peripheral I/O / Port B bit 14 |
| Pin 28 | RP19/RB15 — Remappable peripheral I/O / Port B bit 15 |
| Pin 29 | AVdd — Analog positive supply voltage |
| Pin 30 | AVss — Analog ground reference |
| Pin 31 | AN0/RB0 — Analog input 0 / Port B bit 0 (alt function) |
| Pin 32 | AN1/RB1 — Analog input 1 / Port B bit 1 (alt function) |
| Pin 33 | AN2/RB2 — Analog input 2 / Port B bit 2 (alt function) |
| Pin 34 | AN3/RB3 — Analog input 3 / Port B bit 3 (alt function) |
| Pin 35 | AN4/RB4 — Analog input 4 / Port B bit 4 (alt function) |
| Pin 36 | AN5/RB5 — Analog input 5 / Port B bit 5 (alt function) |
| Pin 37 | AN6/RB6 — Analog input 6 / Port B bit 6 (alt function) |
| Pin 38 | AN7/RB7 — Analog input 7 / Port B bit 7 (alt function) |
| Pin 39 | AN8/RB8 — Analog input 8 / Port B bit 8 (alt function) |
| Pin 40 | AN9/RB9 — Analog input 9 / Port B bit 9 (alt function) |
| Pin 41 | Vdd — Positive supply voltage (2.3V to 3.6V) |
| Pin 42 | Vss — Ground reference |
| Pin 43 | PGED1/RA0 — Programming/debug data line / Port A bit 0 |
| Pin 44 | PGEC1/RA1 — Programming/debug clock line / Port A bit 1 |
Aplicaciones típicas
PIC32MX120F032D-50I/ML es adecuado para 6 aplicacións: Consumer Audio Peripherals with I2S Codecs, Graphical HMI with Parallel Master Port (PMP) LCD, Capacitive Touch User Interface with mTouch CTMU, USB HID Peripherals (with External Transceiver), Industrial Sensor Nodes with PPS Flexibility, Home Appliance Control Boards.
Consumer Audio Peripherals with I2S Codecs
The PIC32MX120F032D-50I/ML fits consumer audio peripherals because it integrates two I2S/SPI modules that interface directly to common audio codecs, plus a 50 MHz MIPS32 M4K core with enough headroom to run USB Audio class firmware and basic DSP. At 50 MHz the M4K core delivers approximately 50 DMIPS, enough for 16-bit/48 kHz stereo I2S streaming with margin for volume control, EQ, and HID volume buttons. The 8 KB SRAM comfortably buffers stereo 16-bit audio frames at 48 kHz with low CPU overhead. The 32 KB Flash holds USB stacks plus application code. Designers should route MCLK to the codec at 12.288 MHz from the PIC32's reference clock output to maintain I2S timing integrity, and place a ferrite bead on the analog AVdd rail to isolate codec analog from MCU digital switching noise.
Recomendado
Graphical HMI with Parallel Master Port (PMP) LCD
The PIC32MX120F032D-50I/ML is ideal for graphical HMI designs because its Parallel Master Port (PMP) can drive small 320x240 QVGA or character LCDs directly without an external graphics controller, saving BOM cost and PCB area. The 50 MHz M4K core executes Microchip's MLA graphics library for drawing buttons, icons, and menus with adequate frame rates, while the 8 KB SRAM holds a partial frame buffer for one display page. The 34 GPIOs provide enough pins for a PMP 8-bit data bus plus control lines and touch panel ADC channels. Designers should buffer PMP signals through 33 ohm series resistors to limit ringing on long FPC cables, and connect the LCD backlight via PWM from the OC module for software brightness control.
Recomendado
Capacitive Touch User Interface with mTouch CTMU
The PIC32MX120F032D-50I/ML is well-suited for capacitive touch interfaces because its integrated Charge Time Measurement Unit (CTMU) enables Microchip's mTouch buttons, sliders, and proximity sensors without external touch ICs. The CTMU combined with the 10-bit ADC measures capacitance changes in femtofarads, supporting up to 16 touch channels through the ADC mux plus I/O pins. The 50 MHz core runs the mTouch library plus a UI event loop with sub-20 ms response times, while the 32 KB Flash holds both the touch algorithm and application logic. Designers should guard touch sensors with ground traces and place 100 nF bypass capacitors at each touch pin to suppress EMI-induced false triggers.
Recomendado
USB HID Peripherals (with External Transceiver)
The PIC32MX120F032D-50I/ML can implement USB HID peripherals such as keyboards, mice, gamepads, and custom input devices when paired with an external USB transceiver such as the PIC32MX USB OTG transceiver. The 50 MHz M4K core runs Microchip's USB stack plus HID report handling with low interrupt latency, while the Peripheral Pin Select (PPS) remaps USB D+/D- to any digital I/O for flexible PCB routing. The 32 KB Flash holds the USB stack plus HID class driver, leaving room for vendor-specific report logic. Designers should add ESD protection diodes on D+/D- lines and route USB traces as a 90 ohm differential pair per USB 2.0 spec.
Recomendado
Industrial Sensor Nodes with PPS Flexibility
The PIC32MX120F032D-50I/ML is a strong choice for industrial sensor nodes because the Peripheral Pin Select (PPS) feature lets designers route UART, SPI, and I2C peripherals to almost any I/O pin, simplifying PCB layout and EMI optimization. The 50 MHz core executes sensor fusion and Modbus RTU communication with deterministic timing, while the 10-bit ADC with up to 28 channels handles multiple analog sensors. The industrial -40C to +105C temperature range suits factory floor environments, and the 32 KB Flash plus 8 KB SRAM accommodate protocol stacks and data logging. Designers should isolate the analog AVdd pin with a ferrite bead and use shielded cables for analog sensor inputs to minimize conducted noise.
Recomendado
Home Appliance Control Boards
The PIC32MX120F032D-50I/ML fits home appliance control boards because the 50 MHz MIPS32 M4K core runs motor control loops, user interface logic, and safety monitoring simultaneously, while the CTMU handles capacitive touch buttons on glass front panels. The 8 KB SRAM supports a small RTOS with task scheduling for multiple appliance subsystems, and the 32 KB Flash holds protocol stacks such as UART-based appliance buses. The 2.3V to 3.6V supply range and -40C to +105C industrial temperature grade suit kitchen and laundry environments. Designers should add a watch window to the firmware for safety-critical turn-off paths and isolate high-voltage relay traces from low-voltage signal traces per IPC-2221.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC32MX120F032D-50I/ML — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC32MX120F032DT-I/ML | PIC32MX120F032D-I/ML | PIC32MX120F032D-V/ML | PIC32MX120F032BT-50I/ML | PIC32MX120F032B-I/ML |
|---|---|---|---|---|---|---|
| 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 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum CPU Frequency | 50 MHz | 50 MHz | 40 MHz | 40 MHz | 50 MHz | 40 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Operating Voltage | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V |
| Temperature Range | -40C to +105C (Industrial) | -40C to +105C (Industrial) | -40C to +105C (Industrial) | -40C to +105C (Industrial) | -40C to +105C (Industrial) | -40C to +105C (Industrial) |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | Yes | Yes |
| CTMU (Capacitive Touch) | Yes | Yes | Yes | Yes | Yes | Yes |
| Packaging Format | Tube (I) | Tape & Reel (T) | Tube (I) | Tube (V temp grade) | Tape & Reel (BT) | Tube (I) |
Diferenciadores clave
- Higher 50 MHz CPU clock vs 40 MHz -40 speed grade (frente a PIC32MX120F032D-I/ML)
- Identical performance profile to -V variant in same QFN package (frente a PIC32MX120F032D-V/ML)
- CTMU capacitive touch + PMP graphics in single chip (frente a External touch controller solution)
Notas de diseño
The 44-QFN package exposes the die paddle (EP) on the bottom, which must be soldered directly to a contiguous ground copper pour with at least 4 thermal vias (0.3 mm drill, 0.5 mm pitch) to provide both electrical ground return and thermal dissipation. According to Microchip AN1267 'QFN Package Mounting', skipping the EP soldering reduces thermal performance by 30% and creates a floating ground plane that increases EMI on analog inputs.
Place a 10uF bulk ceramic capacitor (X5R or X7R, 6.3V rating) within 6 mm of the Vdd pin and a 100 nF decoupling capacitor within 2 mm of each Vdd/Vss pair. For the AVdd analog supply, add a separate ferrite bead plus 10uF bulk + 100 nF decoupling to isolate the ADC and analog comparators from digital switching noise on Vdd, per the PIC32MX1XX/2XX datasheet recommendation.
When migrating from PIC32MX120F032D-I/ML (40 MHz) to PIC32MX120F032D-50I/ML (50 MHz), confirm the PLL configuration and external crystal/oscillator rating support 50 MHz operation - a 40 MHz crystal will not lock the PLL at 50 MHz. Conversely, dropping from -50 to -40 grade will not unlock additional peripherals, just reduce maximum CPU throughput. Always verify the device ID and speed grade with the DEVID register at boot before initializing peripherals.
Use Peripheral Pin Select (PPS) mapping to place high-speed digital signals (SPI, UART, I2C) on adjacent pins and group analog inputs (ANx) on a separate port to simplify PCB routing and minimize digital crosstalk into the ADC. Keep analog traces short and guarded with ground traces on both sides for capacitive-touch and ADC signal integrity.
For the 50 MHz CPU clock and the parallel master port (PMP) interface to an external LCD, keep trace lengths below 50 mm and add 33 ohm series source termination on PMP data and control lines if the LCD FPC cable exceeds 25 mm. The exposed pad ground pour acts as a reference plane for PMP signals, so do not route PMP over a power plane split.
Información de cumplimiento
RoHS and REACH compliance per Microchip product page and DigiKey listing. Not AEC-Q100 qualified - this is an industrial grade MCU. For automotive applications, choose PIC32MX AEC-Q100 qualified variants.
