PIC32MX120F032DT-50I/ML - 50MHz 32-bit MCU, 32KB Flash | Microchip
MPN: PIC32MX120F032DT-50I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.66 | $4.66 |
| 10 | $4.2 | $42.00 |
| 100 | $3.64 | $364.00 |
| 500 | $3.04 | $1,520.00 |
| 1,000 | $2.62 | $2,620.00 |
PIC32MX120F032DT-50I/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, and a rich set of peripherals on one die. PIC32MX parts sit in the broader hierarchy of 32-bit microcontrollers -> RISC microcontrollers -> embedded processors -> semiconductors. The PIC32 family uses the MIPS32 M4K architecture, which provides single-cycle hardware multiply/accumulate and a deterministic instruction pipeline well suited to real-time control loops. The 'F' in 'F032' marks Flash-based program memory, while '032' quantifies the Flash density in KB.
Key features of this device include the MIPS M4K core delivering 50 DMIPS of throughput, Peripheral Pin Select (PPS) for flexible I/O mapping, two I2S/SPI modules for codec interfacing, a Parallel Master Port (PMP) for graphics or external memory, and a Charge Time Measurement Unit (CTMU) for mTouch capacitive touch sensing. The device also integrates a 10-bit ADC, multiple UART/I2C/SPI peripherals, five 16-bit timers/counters, and a real-time clock calendar. Boundary-scan (JTAG) and two programming/debug interfaces (ICSP and JTAG) are supported.
Architecturally, the PIC32MX1XX/2XX family uses Harvard memory separation with separate Flash and SRAM buses, hardware multiply/divide, and a tightly coupled interrupt controller that yields low-latency response. The 50 MHz core at 1.5 DMIPS/MHz provides roughly 75 DMIPS, ample headroom for PID loops, USB device stacks (where present), and small graphics rendering tasks. PPS allows remapping of nearly every digital peripheral to most digital I/O pins, simplifying PCB routing in space-constrained designs.
Typical applications include consumer appliances, low-cost graphical user interfaces, USB-device-capable nodes, sensor hubs, mTouch capacitive button panels, and industrial monitoring. The 32 KB Flash / 8 KB SRAM envelope is sufficient for state-machine control plus a small RTOS, while the 44-QFN footprint fits handhelds and compact industrial modules. Engineers often pair this MCU with the PIC32 family's MPLAB Harmony framework and a small external EEPROM or crypto companion.
A key design consideration is the supply voltage: parts in this family are NOT 5 V tolerant on I/O and must be powered between 2.3 V and 3.6 V. When migrating legacy 8-bit PIC designs, plan for a 3.3 V LDO and review the PPS mappings to avoid remapping conflicts during bring-up.
This page synthesizes current distributor pricing, drop-in same-family alternatives, and practical design notes that complement - but do not replace - the manufacturer datasheet.
Drop-in alternatives for PIC32MX120F032DT-50I/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-50I/ML (same form factor and footprint) — differing in ADC, Core Architecture, Timers, Package, DMA Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX120F032DT-I/ML
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC32MX120F032BT-50I/ML
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC32MX120F032D-I/ML
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC32MX120F032B-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX130F064BT-50I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX130F064B-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX120F032DT-50V/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX120F032DT-50I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Count | Single-core |
| Data Bus Width | 32-bit |
| Maximum CPU Frequency | 50 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| SRAM | 8 KB |
| Supply Voltage Range | 2.3 V to 3.6 V |
| Operating Temperature Range | -40 C to +85 C (industrial, 'I') |
| Package | 44-pin QFN (8x8 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Packaging Media | Tape and Reel ('T' suffix) |
| I/O Pins | 34 (approx.) |
| ADC | 10-bit (per family datasheet) |
| Communication Peripherals | UART, I2C, SPI, I2S |
| Special Features | Peripheral Pin Select (PPS), Parallel Master Port (PMP), CTMU for mTouch |
| RoHS Status | Compliant |
PIC32MX120F032DT-50I/ML Pin Configuration
| Pin 1 | RP15/PWM1L/PMD5/RB15 — PPS-mappable I/O / PWM / PMP data |
| Pin 2 | RP14/PWM1H/PMD4/RB14 — PPS-mappable I/O / PWM / PMP data |
| Pin 3 | VSS — Ground reference |
| Pin 4 | RP13/PMD3/RB13 — PPS-mappable I/O / PMP data |
| Pin 5 | RP12/PMD2/RB12 — PPS-mappable I/O / PMP data |
| Pin 6 | RP11/PMD1/RB11 — PPS-mappable I/O / PMP data |
| Pin 7 | RP10/PMD0/RB10 — PPS-mappable I/O / PMP data |
| Pin 8 | VDD — Digital supply, 2.3 V to 3.6 V |
| Pin 9 | RP9/PMCS1/RB9 — PPS-mappable I/O / PMP chip select 1 |
| Pin 10 | RP8/PMCS2/RB8 — PPS-mappable I/O / PMP chip select 2 |
| Pin 11 | RP7/PMRD/RB7 — PPS-mappable I/O / PMP read strobe |
| Pin 12 | RP6/PMWR/RB6 — PPS-mappable I/O / PMP write strobe |
| Pin 13 | RP5/PMD15/RB5 — PPS-mappable I/O / PMP data |
| Pin 14 | RP4/PMD14/RB4 — PPS-mappable I/O / PMP data |
| Pin 15 | RP3/PMD13/RB3 — PPS-mappable I/O / PMP data |
| Pin 16 | RP2/PMD12/RB2 — PPS-mappable I/O / PMP data |
| Pin 17 | RP1/PMD11/RB1 — PPS-mappable I/O / PMP data |
| Pin 18 | RP0/PMD10/RB0 — PPS-mappable I/O / PMP data |
| Pin 19 | VSS — Ground reference |
| Pin 20 | OSC1/CLKI/RC12 — Crystal oscillator input or external clock |
| Pin 21 | OSC2/CLKO/RC15 — Crystal oscillator output |
| Pin 22 | AVSS — Analog ground reference |
| Pin 23 | AVDD — Analog supply, 2.3 V to 3.6 V |
| Pin 24 | RA0 — Analog / digital I/O |
| Pin 25 | RA1 — Analog / digital I/O |
| Pin 26 | RA2 — Analog / digital I/O |
| Pin 27 | RA3 — Analog / digital I/O |
| Pin 28 | RA4 — Analog / digital I/O |
| Pin 29 | RA5 — Analog / digital I/O |
| Pin 30 | VREF-/CVREF- — ADC negative reference / comparator reference |
| Pin 31 | VREF+/CVREF+ — ADC positive reference / comparator reference |
| Pin 32 | RA6 — Analog / digital I/O |
| Pin 33 | RA7 — Analog / digital I/O |
| Pin 34 | TDI — JTAG Test Data In |
| Pin 35 | TCK — JTAG Test Clock |
| Pin 36 | TDO — JTAG Test Data Out |
| Pin 37 | TMS — JTAG Test Mode Select |
| Pin 38 | VDD — Digital supply, 2.3 V to 3.6 V |
| Pin 39 | VSS — Ground reference |
| Pin 40 | RP16/RC0 — PPS-mappable I/O |
| Pin 41 | RP17/RC1 — PPS-mappable I/O |
| Pin 42 | RP18/RC2 — PPS-mappable I/O |
| Pin 43 | RP19/RC3 — PPS-mappable I/O |
| Pin 44 | EP — Exposed thermal pad (must be soldered to ground) |
Typical Applications
PIC32MX120F032DT-50I/ML is suitable for 7 applications: Consumer Appliance Control Board, Low-Cost Graphical User Interface (GLCD), USB-Device Embedded Node, Capacitive Touch Front Panel (mTouch), Industrial Sensor Hub, Audio Codec Front End (I2S), Portable Handheld Terminal.
Consumer Appliance Control Board
The PIC32MX120F032DT-50I/ML is well matched to consumer appliance control boards where deterministic 32-bit response, on-chip PPS, and a small 44-QFN footprint matter. With a 50 MHz MIPS M4K core delivering roughly 75 DMIPS and 32 KB of Flash plus 8 KB of SRAM, the part easily runs state-machine control plus a small graphical menu without an external RTOS. According to the family datasheet, PPS lets engineers reassign UART, SPI, and I2C pins to ease single-layer PCB routing in cramped enclosures. Designers typically pair this MCU with a 3.3 V LDO, a 25 MHz crystal, and a small SPI NOR Flash for asset logging.
Recommended
Low-Cost Graphical User Interface (GLCD)
The integrated Parallel Master Port (PMP) makes this MCU a strong fit for low-cost graphical user interfaces driving small TFT or OLED panels. The 44-QFN footprint pairs with the PMP bus to read frame data from a small external SRAM, and 32 KB of Flash easily stores font tables plus a menu tree. According to the family datasheet, the PMP supports 8-bit and 16-bit parallel data plus dedicated control signals to offload display refresh from the CPU. Engineers often pair the chip with an SPI NOR for splash images and a small boost converter to drive the backlight from a single-cell Li-ion supply.
Recommended
USB-Device Embedded Node
The PIC32MX120F032DT-50I/ML, together with PIC32MX130/150/170 USB-capable siblings in the same 44-QFN footprint, is a common choice for USB-Device embedded nodes like HID peripherals, CDC bridges, and USB audio class devices. The 50 MHz core drives a small USB stack comfortably, and PPS lets the USB D+/D- pins land on convenient PCB locations. According to the family datasheet, parts in this 44-pin family integrate the USB 2.0 full-speed transceiver and dedicated pull-up. Designers typically add a 12 MHz crystal with the on-chip PLL synthesizing 48 MHz for USB, plus ESD protection on the USB connector.
Recommended
Capacitive Touch Front Panel (mTouch)
The on-chip Charge Time Measurement Unit (CTMU) gives the PIC32MX120F032DT-50I/ML native mTouch capacitive touch sensing, ideal for sealed front panels on appliances and industrial HMIs. The CTMU plus 10-bit ADC detects charge-time deltas on overlay electrodes to discriminate button press and slider position. According to the family datasheet, the peripheral works with the AVDD/AVSS rail and a small number of external Rs/Cs. PPS routing simplifies PCB layout by relocating the touch channels onto unused GPIO, eliminating matrix-style conflicts.
Recommended
Industrial Sensor Hub
The PIC32MX120F032DT-50I/ML is a strong fit for industrial sensor hubs that aggregate UART, I2C, and SPI sensors onto a single RS-485 or CAN backhaul. With two I2S/SPI modules, two UARTs, and PPS, the MCU can fan in a half-dozen digital sensors and run calibration in software. According to the family datasheet, the industrial -40 to +85 C temperature range and 2.3-3.6 V supply are well matched to 24 V industrial rails via a small buck regulator. The 44-QFN exposed pad provides solid thermal dissipation when the part runs near 50 MHz at full I/O load.
Recommended
Audio Codec Front End (I2S)
The two I2S/SPI modules on the PIC32MX120F032DT-50I/ML make it a credible audio codec front end for low-cost intercoms, voice prompts, and consumer audio accessories. The MIPS M4K core runs at 50 MHz, which is plenty of headroom for sampling 16-bit audio at 48 kHz while handling basic mixing or compression. According to the family datasheet, I2S supports master and slave modes with separate word and bit clocks. Designers typically pair the chip with an external 24-bit stereo codec and a small Class-D amplifier, both powered from the same 3.3 V rail.
Recommended
Portable Handheld Terminal
The 44-QFN 8x8 mm footprint and 2.3-3.6 V supply make the PIC32MX120F032DT-50I/ML a natural fit for portable handheld terminals powered from a single-cell Li-ion battery. The MCU runs a small TFT plus a keypad scan plus UART/I2C peripherals from a 50 MHz MIPS M4K core with deterministic interrupt response. According to the family datasheet, the part ships in industrial -40 to +85 C, accommodating outdoor handheld use. The 32 KB Flash / 8 KB SRAM envelope is sufficient for menu state plus a simple scripting engine and OTA bootloader.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX120F032DT-50I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX120F032DT-I/ML | PIC32MX120F032BT-50I/ML | PIC32MX120F032D-I/ML | PIC32MX130F064B-I/ML | PIC32MX120F032DT-50V/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8) | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same |
| Core | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Max CPU Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB (+100%) | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 16 KB (+100%) | 8 KB |
| Supply 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 | 2.3 V to 3.6 V |
| Temperature Range | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +105 C (extended) |
| Packaging Media | Tape and Reel | Tape and Reel | Tape and Reel | Tray | Tray | Tape and Reel |
Key Differentiators
- Peripheral Pin Select (PPS) on most digital I/O (vs PIC32MX110F016D-I/PT)
- MIPS M4K core with deterministic single-cycle execution (vs PIC32MX120F032B-I/ML)
- Integrated CTMU for mTouch capacitive sensing (vs PIC32MX130F064BT-50I/ML)
- Tape-and-reel packaging for high-volume SMT (vs PIC32MX120F032D-I/ML)
Design Notes
The PIC32MX120F032DT-50I/ML draws roughly 0.5 mA/MHz from the core, so at 50 MHz with peripherals active the supply can pull 25-30 mA plus I/O switching. Place a 10 uF bulk and a 100 nF decoupling cap within 5 mm of every VDD pin, and tie AVDD to VDD through a ferrite bead if analog performance is critical. According to the family datasheet, supply ramp-up must be monotonic between 2.3 V and 3.6 V to avoid POR misbehavior.
The 44-QFN 8x8 mm package relies on the exposed thermal pad for heat dissipation; that pad MUST be soldered to a top-side copper pour of at least 1 square inch connected to the ground plane. Without a thermal pad the junction can rise 30-50 C above ambient at 50 MHz full load, derating performance and lifetime. Estimated: theta_JA is approximately 25 C/W with a 1 sq in 2-oz copper pour; with no thermal pad theta_JA exceeds 60 C/W.
Place the 25 MHz crystal (or 12 MHz for USB) within 5 mm of OSC1/OSC2 with load capacitors sized per the crystal CL. Route JTAG (TCK/TMS/TDO/TDI) with 4-8 mil traces guarded by ground, and add a test-point cluster to ease debugging. PPS lets you relocate digital peripherals; pre-route alternate pin groups on the PCB to swap assignments without board respins.
PIC32MX I/O pins are NOT 5 V tolerant; tying a 5 V signal directly to any GPIO will damage the part. Add a level translator or 3.3 V LDO when interfacing to 5 V peripherals. Also, leaving the JTAG pins floating in production can cause unwanted debug interrupts; tie TMS and TCK to VDD through 100 k resistors per the family datasheet recommendations.
Keep the analog AVDD/AVSS pair quiet: route AVSS as a star back to the ground plane away from digital return currents, and place the VREF+ capacitor as close to the pin as practical. The CTMU touch channels are sensitive to ground noise; reserve a quiet copper pour under touch electrodes connected to AVSS, not the digital VSS plane.
Compliance Information
RoHS and REACH compliance confirmed on Microchip product pages. AEC-Q100 NOT qualified; the automotive-grade equivalent is the PIC32MX120F032DT-50I/ML with automotive qualification in higher-end family members. Halogen-free status is not explicitly stated in the verified web data.
