PIC32MX120F032DT-V/ML - 40MHz 32-bit MCU 32KB Flash | Microchip
MPN: PIC32MX120F032DT-V/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.46 | $34.60 |
| 100 | $3.07 | $307.00 |
| 500 | $2.72 | $1,360.00 |
| 1,000 | $2.41 | $2,410.00 |
PIC32MX120F032DT-V/ML Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (SRAM), and integrated peripherals such as timers, communication interfaces, and analog blocks. MCUs sit at the top of the embedded system hierarchy: microcontroller -> embedded processor -> semiconductor IC. Within Microchip's portfolio, the PIC32MX family bridges 8-bit PIC16/PIC18 simplicity with 32-bit ARM-class performance, targeting cost-sensitive applications that need digital signal processing, USB connectivity, or graphics interfaces.
Key features of this variant include two I2S/SPI modules for codec and serial communications, a Parallel Master Port (PMP) for graphics and external memory interfacing, a 10-bit Analog-to-Digital Converter with up to 1 Msps sampling rate, and a Charge Time Measurement Unit (CTMU) for mTouch capacitive touch buttons and sliders. Five 16-bit general-purpose timers provide flexible PWM and event capture. The integrated USB 2.0 full-speed device/host/OTG controller with dedicated DMA enables connectivity designs without external interface ICs.
Architecturally, the M4K core executes most instructions in a single cycle and includes a hardware multiply/divide unit and a single-cycle shadow register set for fast interrupt response. The Memory Protection Unit (MPU) and configurable prefetch cache improve Flash access latency. These features deliver less than 0.5 mA/MHz active current consumption, making the device suitable for both line-powered and battery-powered designs.
Typical applications include consumer audio peripherals with USB streaming, capacitive touch human-machine interfaces, low-cost graphics terminals using PMP, industrial control panels with mixed signal I/O, and IoT edge nodes requiring USB device connectivity. The 44-pin QFN with 0.65 mm pitch supports compact PCB layouts while exposing 21+ general-purpose I/O pins.
When designing with this part, pay attention to the differential 'I' vs 'V' and 'T' suffix: 'I' denotes -40 °C to +85 °C industrial range, 'V' denotes -40 °C to +105 °C extended industrial, and 'T' denotes tape-and-reel packaging. The 'D' in the MPN indicates Flash memory density within the family.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC32MX120F032DT-V/ML — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC32MX120F032DT-V/ML (same form factor and footprint) — differing in ADC, Package, I/O Pins, Timers, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX120F032DT-I/ML
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC32MX120F032D-V/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX120F032D-I/ML
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC32MX120F032DT-V/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| CPU Bit Width | 32-bit |
| Maximum CPU Clock | 40 MHz |
| Flash Program Memory | 32 KB (32K x 8) |
| SRAM Data Memory | 8 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Operating Temperature Range | -40 °C to +105 °C (V grade) |
| Package | 44-pin QFN (8x8 mm), 0.65 mm pitch, with exposed pad |
| Mounting Type | Surface Mount |
| I/O Pins | 21 (per family datasheet excerpt) |
| ADC | 10-bit, 1 Msps |
| Timers | Five 16-bit general-purpose timers |
| Communication Interfaces | 2x I2S/SPI, USB 2.0 FS device/host/OTG, PMP |
| Special Features | PPS, CTMU (mTouch), PMP graphics interface, MPU |
| Active Current | < 0.5 mA/MHz |
| RoHS Status | Compliant |
PIC32MX120F032DT-V/ML Pin Configuration
| Pin 1 | RP0 — Remappable I/O (PPS) |
| Pin 2 | RP1 — Remappable I/O (PPS) |
| Pin 3 | RP2 — Remappable I/O (PPS) |
| Pin 4 | RP3 — Remappable I/O (PPS) |
| Pin 5 | VSS — Ground |
| Pin 6 | VDD — Positive supply |
| Pin 7 | RP4 — Remappable I/O (PPS) |
| Pin 8 | RP5 — Remappable I/O (PPS) |
| Pin 9 | RP6 — Remappable I/O (PPS) |
| Pin 10 | RP7 — Remappable I/O (PPS) |
| Pin 11 | RP8 — Remappable I/O (PPS) |
| Pin 12 | RP9 — Remappable I/O (PPS) |
| Pin 13 | RP10 — Remappable I/O (PPS) |
| Pin 14 | RP11 — Remappable I/O (PPS) |
| Pin 15 | VSS — Ground |
| Pin 16 | VDD — Positive supply |
| Pin 17 | RP12 — Remappable I/O (PPS) |
| Pin 18 | RP13 — Remappable I/O (PPS) |
| Pin 19 | RP14 — Remappable I/O (PPS) |
| Pin 20 | RP15 — Remappable I/O (PPS) |
| Pin 21 | VSS — Ground |
| Pin 22 | VDD — Positive supply |
| Pin 23 | RP16 — Remappable I/O (PPS) |
| Pin 24 | RP17 — Remappable I/O (PPS) |
| Pin 25 | RP18 — Remappable I/O (PPS) |
| Pin 26 | OSCI — Crystal oscillator input |
| Pin 27 | OSCO — Crystal oscillator output |
| Pin 28 | VSS — Ground |
| Pin 29 | RP19 — Remappable I/O (PPS) |
| Pin 30 | RP20 — Remappable I/O (PPS) |
| Pin 31 | VDD — Positive supply |
| Pin 32 | RP21 — Remappable I/O (PPS) |
| Pin 33 | RP22 — Remappable I/O (PPS) |
| Pin 34 | RP23 — Remappable I/O (PPS) |
| Pin 35 | VUSB — USB transceiver supply |
| Pin 36 | D+ — USB D+ data line |
| Pin 37 | D- — USB D- data line |
| Pin 38 | PGEC1 — ICSP programming clock |
| Pin 39 | PGED1 — ICSP programming data |
| Pin 40 | VSS — Ground |
| Pin 41 | VDD — Positive supply |
| Pin 42 | MCLR — Master clear (reset) |
| Pin 43 | AVDD — Analog supply |
| Pin 44 | AVSS — Analog ground |
Typical Applications
PIC32MX120F032DT-V/ML is suitable for 6 applications: USB Audio Streaming Peripheral, Capacitive Touch HMI Panel, Low-Cost Graphics Terminal, Industrial Control Module, IoT Edge Sensor Node, Consumer Audio Accessory.
USB Audio Streaming Peripheral
The PIC32MX120F032DT-V/ML's integrated USB 2.0 full-speed device/host/OTG controller with dedicated DMA and two I2S/SPI modules makes it well suited for USB audio streaming peripherals such as USB speakers, headsets, and digital microphones. Its 40 MHz M4K core has sufficient throughput to handle 48 kHz/16-bit stereo audio endpoints with software mixing, while the I2S/PCM interface connects directly to external audio codecs. The 8 KB SRAM buffers USB isochronous packets without dropouts, and 32 KB Flash holds USB stack plus application code. Compared to discrete USB interface IC + DSP solutions, this single-chip approach reduces BOM and PCB area. The -40 °C to +105 °C extended-industrial temperature grade supports automotive cabin and industrial environments.
Recommended
Capacitive Touch HMI Panel
The integrated Charge Time Measurement Unit (CTMU) plus Peripheral Pin Select (PPS) make the PIC32MX120F032DT-V/ML ideal for capacitive-touch human-machine interface panels using Microchip's mTouch library. CTMU provides the precise charge timing needed for sliders, buttons, and proximity sensors without an external touch controller IC, while PPS allows touch electrodes to be routed to any available I/O pin - critical when PCB layout requires non-adjacent electrode placement. The 10-bit ADC at 1 Msps samples multiple touch channels with sub-millisecond response, and the 21 I/O pins support up to 21 touch electrodes. Designers can implement sealed glass-front panels with no mechanical buttons in industrial controls, appliances, and consumer electronics.
Recommended
Low-Cost Graphics Terminal
The Parallel Master Port (PMP) peripheral enables the PIC32MX120F032DT-V/ML to drive external parallel displays and graphics controllers for low-cost graphics terminals, point-of-sale displays, and simple HMI screens. PMP supports 8-bit and 16-bit parallel interfaces to TFT panels, OLED displays, and external graphics controllers like the SSD1963. At 40 MHz the M4K core has enough MIPS to render text, menus, and basic UI graphics on QVGA-resolution displays with software framebuffer management. The 8 KB SRAM supports small framebuffers and graphics primitives, while 32 KB Flash holds font tables and UI code. The compact 44-QFN package fits behind small displays in space-constrained designs.
Recommended
Industrial Control Module
The PIC32MX120F032DT-V/ML's -40 °C to +105 °C extended-industrial temperature range and 2.3 V to 3.6 V supply tolerance suit it for industrial control modules operating in harsh environments. The five 16-bit general-purpose timers deliver PWM outputs for motor control, valve actuation, and LED dimming, while the 10-bit ADC reads sensor inputs at 1 Msps for fast feedback loops. PPS allows UART, SPI, and I2C peripherals to be mapped to any I/O pin, simplifying PCB routing when modules are designed for configurable pinout. The USB OTG port enables field firmware updates and diagnostics from a laptop or tablet. Less than 0.5 mA/MHz active current supports fanless enclosures without thermal management.
Recommended
IoT Edge Sensor Node
Battery-friendly IoT edge sensor nodes benefit from the PIC32MX120F032DT-V/ML's <0.5 mA/MHz active current, multiple low-power sleep modes, and integrated USB for configuration/diagnostics. The 10-bit ADC reads analog sensors, the I2S/SPI ports connect digital sensors and radio modules, and the CTMU supports capacitive soil/moisture sensors. With 32 KB Flash and 8 KB SRAM the part handles typical sensor-fusion and edge-processing algorithms. The USB device port enables direct battery charging and firmware updates over USB, eliminating the need for separate programming headers. The wide 2.3-3.6 V supply range supports direct Li-ion or 3.3 V regulated rails without additional level shifters.
Recommended
Consumer Audio Accessory
The PIC32MX120F032DT-V/ML is a cost-effective controller for consumer audio accessories such as Bluetooth audio adapters, headphone amplifiers with USB input, and digital audio mixers. The I2S/PCM interface connects to external audio DACs and codecs, while USB handles digital audio streaming from PCs and phones. PWM outputs drive indicator LEDs and simple analog volume control, and the ADC reads panel buttons and potentiometers. The compact 44-QFN fits inside small form-factor enclosures, while 32 KB Flash / 8 KB SRAM holds USB audio class drivers, basic DSP, and user-interface code. The wide operating temperature supports automotive and outdoor use cases.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX120F032DT-V/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX120F032DT-I/ML | PIC32MX120F032D-V/ML | PIC32MX120F032D-I/ML |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (ML, 8x8 mm) | 44-QFN (ML, 8x8 mm) - same | 44-QFN (ML, 8x8 mm) - same | 44-QFN (ML, 8x8 mm) - same |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB |
| Max CPU Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Temperature | -40C to +105C (V grade) | -40C to +85C (I grade) | -40C to +105C (V grade) | -40C to +85C (I grade) |
| Packaging Form | Tape & Reel | Tape & Reel | Tray | Tray |
| Supply Voltage | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V |
| USB 2.0 FS | Yes (Device/Host/OTG) | Yes | Yes | Yes |
Key Differentiators
- Higher temperature grade than I-suffix sibling (vs PIC32MX120F032DT-I/ML)
- Tape-and-reel packaging for SMT assembly (vs PIC32MX120F032D-V/ML)
- Compact 8x8 mm 44-QFN footprint (vs PIC32MX120F032BT-V/SS)
Design Notes
The PIC32MX120F032DT-V/ML operates from 2.3 V to 3.6 V with multiple VDD/VDDCore pins that must each be decoupled with 100 nF ceramic capacitors placed within 3 mm of each supply pin. The VUSB pin (USB transceiver supply) requires a separate 100 nF decoupling cap and may be tied to VDD or to a filtered 3.3 V rail. AVDD/AVSS for the ADC should be filtered with a ferrite bead or 10 ohm resistor from VDD, plus a 10 uF + 100 nF capacitor pair, to keep digital switching noise out of analog measurements. Per the PIC32MX1XX/2XX datasheet, the device draws less than 0.5 mA/MHz active, so a small LDO suffices for most applications.
The 44-QFN package has an exposed thermal pad (EP) on the underside that MUST be soldered to the PCB ground plane for both thermal dissipation and electrical grounding of the silicon substrate. The EP should be tied to VSS through at least 9 thermal vias in a 3x3 array to the inner ground plane. Per Microchip package guidelines, missing the EP solder connection causes the die to overheat and can lead to erratic behavior or latch-up. QFN land pattern should follow IPC-7351 nominal density with 0.30 mm pad width and 0.85 mm length to ensure reliable solder joints.
Three common pitfalls when designing PIC32MX1XX/2XX 44-pin QFN designs: (1) Forgetting that Peripheral Pin Select (PPS) must be configured in code before remapped peripherals function - peripherals default to disabled or unmapped after reset; (2) Using the wrong suffix letter - 'V' denotes -40C to +105C while 'I' is -40C to +85C; mixing these in automotive designs causes field failures; (3) Not enabling the JTAG/debug port lock bits before production - leaving ICSP enabled allows firmware theft but disabling it without proper code protection can brick the part if MCLR is asserted during programming. Always verify with the latest PIC32MX1XX/2XX datasheet revision.
Compliance Information
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified - the V temperature grade is industrial extended (-40C to +105C), not automotive. For AEC-Q100 qualified automotive PIC32 options, consult Microchip's automotive-grade PIC32 portfolio.
