PIC32MX220F032D-50I/ML - 32-bit MCU, 50MHz/83DMIPS, 32KB Flash | Microchip
MPN: PIC32MX220F032D-50I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.67 | $4.67 |
| 10 | $4.2 | $42.00 |
| 100 | $3.75 | $375.00 |
| 500 | $3.36 | $1,680.00 |
| 1,000 | $2.99 | $2,990.00 |
PIC32MX220F032D-50I/ML Overview
A 32-bit microcontroller (MCU) is an integrated circuit containing a high-performance processor core, program and data memory, and a rich set of on-chip peripherals designed for low-latency embedded control. PIC32MX MCUs occupy the upper end of Microchip's 32-bit portfolio (PIC32 -> MIPS32/M4K family -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor), delivering deterministic interrupt response and DSP-class arithmetic performance in a single chip. Compared to 8-bit or 16-bit predecessors, 32-bit cores enable richer HMI stacks, audio codecs, and connectivity stacks on bare-metal or RTOS environments.
Key features of this device include: 50 MHz / 83 DMIPS MIPS32 M4K core with single-cycle multiply and hardware multiply-accumulate (MAC); 32 KB Flash program memory with 8 KB SRAM; Peripheral Pin Select (PPS) for flexible pin function remapping; two I2S/SPI modules targeting audio codecs; Parallel Master Port (PMP) for graphics and external memory interfaces; and 10-bit ADC with up to 1 Msps sampling. The -50I/ML suffix designates a 50 MHz industrial-temperature range (-40C to +85C) and the 44-pin VQFN ML package.
From an architectural perspective, the PIC32MX220 series uses a Harvard-style memory architecture with separate instruction and data paths, and is supported by Microchip's MPLAB X IDE, Harmony MCC code generator, and MPLAB XC32 compiler toolchain. The CTMU peripheral enables software-driven touch sensing with no external hardware beyond a PCB trace and ground plane, while PPS allows peripheral-to-pin remapping on the fly to simplify PCB layout.
Typical applications include low-cost graphical HMI panels, audio playback appliances, USB device-class peripherals (with external transceiver), industrial control user interfaces, and capacitive touch human-machine interfaces such as appliance control panels and HVAC thermostats. Designers value the combination of mTouch touch support, PMP graphics, and dual I2S for cost-effective single-chip solutions.
When designing with the PIC32MX220F032D-50I/ML, ensure the operating voltage is held within the 2.3V to 3.6V range (3.3V typical) and that decoupling is placed as close as possible to the VDD/VSS pin pairs. For USB applications, an external 3.3V LDO is recommended to meet USB suspend current requirements.
This page synthesizes distributor pricing, pin-to-pin drop-in alternatives, application notes, and practical design notes not found on the manufacturer product page alone.
Drop-in alternatives for PIC32MX220F032D-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 PIC32MX220F032D-50I/ML (same form factor and footprint) — differing in ADC, Package, Operating Temperature Range, Parallel Master Port (PMP), Maximum CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX220F032D-50I/PT
✅ Drop-In✓ In Stock
$1.3475 / Unit
View Datasheet →PIC32MX220F032DT-50I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX220F032D-I/ML
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC32MX120F032D-50I/ML
✅ Drop-In✓ In Stock
$1.98 / Unit
View Datasheet →PIC32MX220F032B-50I/SS
✅ Drop-In✓ In Stock
$2.19 / Unit
View Datasheet →PIC32MX220F032D-50I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 50 MHz |
| Performance | 83 DMIPS |
| Program Memory (Flash) | 32 KB |
| Data Memory (SRAM) | 8 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Typical Operating Voltage | 3.3 V |
| Active Current Consumption | less than 0.5 mA/MHz |
| Operating Temperature Range | -40 C to +85 C (Industrial, -I) |
| ADC | 10-bit, up to 1 Msps |
| I2S/SPI Modules | 2 |
| Peripheral Pin Select (PPS) | Yes |
| Parallel Master Port (PMP) | Yes |
| CTMU (mTouch capacitive touch) | Yes |
| Package | 44-pin VQFN (ML) with exposed pad |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
PIC32MX220F032D-50I/ML Pin Configuration
| Pin 1 | SDA3/RPG7/PMD7/RC3 — I2C SDA / GPIO |
| Pin 2 | RA0 — GPIO / analog input AN0 |
| Pin 3 | RA1 — GPIO / analog input AN1 |
| Pin 4 | RA2 — GPIO / analog input AN2 |
| Pin 5 | RA3 — GPIO / analog input AN3 |
| Pin 6 | RA4 — GPIO / analog input AN4 |
| Pin 7 | VDD — Power supply 3.3V |
| Pin 8 | VSS — Ground |
| Pin 9 | RA5 — GPIO / analog input AN5 |
| Pin 10 | RA6 — GPIO / analog input AN6 |
| Pin 11 | RA7 — GPIO / analog input AN7 |
| Pin 12 | RB0/AN8 — GPIO / analog input AN8 |
| Pin 13 | RB1/AN9 — GPIO / analog input AN9 |
| Pin 14 | RB2/AN10/C1IN+ — GPIO / analog input AN10 |
| Pin 15 | RB3/AN11/C1IN — GPIO / analog input AN11 |
| Pin 16 | RB4/AN12/C2IN+ — GPIO / analog input AN12 |
| Pin 17 | RB5/AN13/C2IN- — GPIO / analog input AN13 |
| Pin 18 | RB6/AN14/C1OUT/PGEC1 — GPIO / analog input AN14 / ICSP clock |
| Pin 19 | RB7/AN15/C2OUT/PGED1 — GPIO / analog input AN15 / ICSP data |
| Pin 20 | VSS — Ground |
| Pin 21 | VDD — Power supply 3.3V |
| Pin 22 | RC0 — GPIO |
| Pin 23 | RC1 — GPIO |
| Pin 24 | RC2 — GPIO |
| Pin 25 | RC3 — GPIO |
| Pin 26 | RC4 — GPIO |
| Pin 27 | RC5 — GPIO |
| Pin 28 | RC6 — GPIO |
| Pin 29 | RC7 — GPIO |
| Pin 30 | VSS — Ground |
| Pin 31 | VDD — Power supply 3.3V |
| Pin 32 | RD0/PMD0 — GPIO / PMP data |
| Pin 33 | RD1/PMD1 — GPIO / PMP data |
| Pin 34 | RD2/PMD2 — GPIO / PMP data |
| Pin 35 | RD3/PMD3 — GPIO / PMP data |
| Pin 36 | RD4/PMD4 — GPIO / PMP data |
| Pin 37 | RD5/PMD5 — GPIO / PMP data |
| Pin 38 | RD6/PMD6 — GPIO / PMP data |
| Pin 39 | RD7/PMD7 — GPIO / PMP data |
| Pin 40 | RE0/PMD8 — GPIO / PMP data |
| Pin 41 | RE1/PMD9 — GPIO / PMP data |
| Pin 42 | RE2/PMD10 — GPIO / PMP data |
| Pin 43 | RE3/PMD11 — GPIO / PMP data |
| Pin 44 | VSS/EP — Ground / Exposed thermal pad |
Typical Applications
PIC32MX220F032D-50I/ML is suitable for 7 applications: Capacitive Touch HMI Panel, Low-Cost Audio Playback Appliance, Industrial Control User Interface, USB Device-Class Peripheral, mTouch Capacitive Touch Sensing, Small Graphical Display Module, Home Appliance Control Board.
Capacitive Touch HMI Panel
The PIC32MX220F032D-50I/ML is purpose-built for capacitive touch HMI panels thanks to its integrated Charge Time Measurement Unit (CTMU). The CTMU, combined with the 50 MHz MIPS32 M4K core, delivers millisecond-level touch scan rates while leaving the CPU free for HMI logic. The on-chip 32 KB Flash and 8 KB SRAM fit typical capacitive button/slider firmware stacks without external memory, while dual I2S/SPI modules allow simultaneous touch + audio playback. Designers can implement 8-16 touch buttons plus a slider on a single MCU, eliminating the need for a dedicated touch controller IC. The 44-pin VQFN package keeps the touch-sensing PCB compact for front-panel designs in appliances and industrial controls.
Recommended
Low-Cost Audio Playback Appliance
The PIC32MX220F032D-50I/ML fits low-cost audio playback appliances through its dual I2S/SPI modules capable of streaming uncompressed PCM to external DACs. The 50 MHz / 83 DMIPS core handles audio decoding (ADPCM, Ogg Vorbis, MP3) while leaving cycles for UI and file-system tasks via SPI to SD card. Operating from a single 3.3 V rail simplifies the power tree and the 8 KB SRAM buffers several hundred milliseconds of decoded audio. Unlike parts requiring external USB PHY, the integrated USB device port enables a low-cost docking-station product. Designers should pair with an external I2S DAC such as the PCM5102A and an LDO such as MCP1700 for clean analog rails.
Recommended
Industrial Control User Interface
The PIC32MX220F032D-50I/ML targets industrial control user interfaces with its industrial -40 C to +85 C temperature grade, Parallel Master Port (PMP) for graphics LCDs, and Peripheral Pin Select (PPS) for flexible PCB routing. The 50 MHz MIPS32 M4K core drives small TFT panels and processes real-time operator input at <0.5 mA/MHz active current. PMP supports 8/16-bit interface to graphical LCDs and external peripherals, while PPS allows remapping of UART/SPI/I2C peripheral functions to any I/O pin. The 44-pin VQFN package with industrial temperature grade is qualified for factory automation HMI, equipment status displays, and HVAC thermostat interfaces.
Recommended
USB Device-Class Peripheral
The PIC32MX220F032D-50I/ML integrates a USB 2.0 full-speed device port and the 32-bit MIPS32 M4K core, allowing designers to implement HID, CDC, or vendor-class USB peripherals without an external PHY. The 50 MHz clock is sufficient for USB polling at 1 kHz with margin, and the 8 KB SRAM fits HID-class boot/report descriptors plus vendor command handlers. Operating voltage of 3.3 V allows direct VBUS regulation through an external LDO. Designers should allocate approximately 4 KB of Flash for the USB stack and reserve at least 2 KB of RAM for endpoint buffers. Recommended companion parts include USB connectors, ESD protection diodes, and a 48 MHz external crystal or onboard PLL.
Recommended
mTouch Capacitive Touch Sensing
The PIC32MX220F032D-50I/ML excels at mTouch capacitive touch sensing because its integrated CTMU peripheral enables firmware-driven touch measurement without external hardware beyond a copper pad. The 50 MHz MIPS32 M4K core delivers sub-millisecond touch scan cycles for 8-16 buttons plus a wheel/slider. PPS allows touch pad I/O to share pins with other functions, freeing GPIOs for LEDs and other peripherals. Designers can implement water-rejection, proximity, and gesture firmware in the 32 KB Flash, leaving 8 KB SRAM for touch event queues. The CTMU is documented in the Microchip mTouch Capacitive Touch Library and supported in MPLAB Code Configurator for fast firmware bring-up.
Recommended
Small Graphical Display Module
The PIC32MX220F032D-50I/ML drives small graphical display modules through its PMP interface, which supports 8/16-bit data with separate RD/WR/RS controls to external LCD controllers. The 50 MHz MIPS32 M4K core delivers enough MIPS for animated menu systems, while 32 KB Flash fits a UI asset set for low-resolution monochrome or color displays. Designers can pair the PIC32MX220F032D-50I/ML with SSD1306-based OLEDs or ST7565-based LCDs through SPI, or with ILI9341 TFTs through PMP. Operating voltage of 2.3V to 3.6V allows direct interface to 3.3V display modules without level shifters, simplifying the BOM and reducing PCB footprint.
Recommended
Home Appliance Control Board
The PIC32MX220F032D-50I/ML is well suited to home appliance control boards, combining a 50 MHz 32-bit core with PPS, PMP, dual I2S/SPI, CTMU, and a 10-bit ADC. These peripherals support capacitive touch panels, indicator LEDs, motor control PWM, and serial communications to Wi-Fi/Bluetooth modules from a single MCU. Operating at <0.5 mA/MHz and industrial temperature range, the part satisfies the appliance EMC and surge immunity requirements. Designers should reserve at least 4 KB of Flash for safety stack and use the CTMU for slider controls on washing machine or induction cooktop front panels.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX220F032D-50I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX220F032D-50I/PT | PIC32MX220F032DT-50I/ML | PIC32MX220F032D-I/ML | PIC32MX120F032D-50I/ML |
|---|---|---|---|---|---|
| Package | 44-pin VQFN (ML) 8x8 mm | 44-pin TQFP (10x10 mm) | 44-pin VQFN (ML) | 44-pin VQFN (ML) | 44-pin VQFN (ML) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | MIPS32 M4K 32-bit RISC | MIPS32 M4K 32-bit RISC | MIPS32 M4K 32-bit RISC | MIPS32 M4K 32-bit RISC | MIPS32 M4K 32-bit RISC |
| Maximum Clock | 50 MHz | 50 MHz | 50 MHz | 40 MHz | 40 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| 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 |
| Operating Temperature | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) |
Key Differentiators
- Only PIC32MX 44-pin VQFN part with 50 MHz speed grade at 32 KB Flash (vs PIC32MX120F032D-50I/ML)
- Industrial -40 C to +85 C temperature grade on the 50 MHz part (vs PIC32MX220F032D-50I/PT (TQFP))
- Lower-frequency drop-in option preserves firmware source compatibility (vs PIC32MX220F032D-I/ML)
Design Notes
PIC32MX220F032D-50I/ML operates from 2.3 V to 3.6 V with a 3.3 V typical rail and <0.5 mA/MHz active current. Place one 100 nF ceramic decoupling capacitor as close as possible to each VDD/VSS pin pair (typically 3-4 pairs on the 44-pin package). For USB applications, use an external LDO (e.g., MCP1700-3302E) with at least 100 mA capacity and 10 uF output bulk capacitance to meet USB suspend current transients without rail collapse.
Estimated: At 50 MHz full-load operation across all peripherals, the PIC32MX220F032D-50I/ML typical active current is approximately 25 mA. With a 3.3 V rail this dissipates ~83 mW. The 44-pin VQFN has a thermal pad that MUST be soldered to a ground plane with at least 16 thermal vias to keep junction rise below 30 C. Without proper thermal pad soldering, junction temperature can exceed the 85 C ambient limit during sustained 50 MHz operation.
Route the ICSP/PGEC1/PGED1 pins (RB6/RB7) directly to a 0.1" header for in-circuit debugging without interference from analog traces. Keep the USB D+/D- differential pair length-matched to within 2mm and route over a continuous ground plane for 90 ohm differential impedance. Place the 48 MHz crystal or resonator within 5mm of the OSCI/OSCO pads and guard it with a ground ring to reduce EMI susceptibility.
Do NOT assume the 50I and I grades are pin-to-pin firmware-identical: PIC32MX220F032D-50I/ML runs at 50 MHz and PIC32MX220F032D-I/ML at 40 MHz. Firmware configuration bits must be set for the correct oscillator mode (HS or XT) and PLL multiplier. Ensure the PPS configuration registers are unlocked via CFGCON before assigning PPS functions. For USB applications, the 8 KB SRAM is tight: allocate at least 2 KB for USB endpoint buffers and reserve the rest for stack/heap.
When using CTMU for mTouch capacitive touch, place the touch sensor pads on the top layer with no solder mask for direct finger contact, and route the sensor traces as short, narrow guarded tracks to the PIC32MX220F032D-50I/ML pins. Keep a ground pour around each touch pad with at least 5mm gap to prevent false triggers. Use the MPLAB Code Configurator mTouch plugin to auto-generate baseline calibration firmware and reduce bring-up time.
Compliance Information
RoHS and REACH compliant per Microchip product page and PIC32MX1XX/2XX family datasheet DS60001168L. Not AEC-Q100 qualified; choose PIC32MX1XX/2XX AEC-Q100 variants for automotive applications. Industrial -40 C to +85 C temperature grade only.