PIC32MX220F032DT-50I/PT - 50MHz 32-bit MCU 32KB Flash | Microchip
MPN: PIC32MX220F032DT-50I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.62 | $3.62 |
| 10 | $3.27 | $32.70 |
| 100 | $2.79 | $279.00 |
| 500 | $2.41 | $1,205.00 |
| 1,000 | $2.06 | $2,060.00 |
PIC32MX220F032DT-50I/PT Overview
A 32-bit microcontroller (MCU) is an integrated processor core with on-chip Flash, RAM, and peripherals (UART, SPI, I2C, timers, ADC, USB) used to implement embedded control logic. Within the broader semiconductor hierarchy, an MCU sits below microprocessors (which need external memory) and above simple digital logic, forming the central decision-making block of almost every modern electronic product. The PIC32MX220 line extends the 16-bit PIC24/dsPIC architecture into 32-bit territory while keeping peripheral and tool compatibility with earlier PIC microcontrollers.
Key features of this part include a 50 MHz maximum CPU clock yielding 50 MIPS throughput, 32 KB Flash organized as 32K x 8, 8 KB SRAM, an integrated USB 2.0 full-speed device controller with on-chip transceiver, a 10-bit 1 Msps ADC with up to 13 channels, and a CTMU (Charge Time Measurement Unit) for capacitive touch sensing. The device also offers Peripheral Pin Select (PPS) for flexible I/O mapping, two UART, two I2C, and two SPI/I2S modules, plus a Real-Time Clock and Calendar (RTCC).
Architecturally, the PIC32MX220 uses a five-stage MIPS M4K pipeline with separate instruction and data buses (Harvard variant) and a tightly-coupled prefetch cache, which simplifies C-code porting from other MIPS-based platforms while preserving the PIC peripheral ecosystem. The integrated USB PHY eliminates the external transceiver required on older PIC18/24 USB parts, reducing BOM cost and PCB area.
Typical applications include USB HID peripherals (keyboards, mice, custom input devices), low-cost graphics and audio playback interfaces, capacitive touch keypads using the on-chip CTMU, sensor hubs for industrial monitoring, and general-purpose 32-bit upgrades for legacy PIC16/PIC24 designs that need more Flash or RAM. The combination of USB device, RTCC, and PPS also makes it attractive for tethered IoT edge nodes.
Designers should note that this MCU requires a 2.3 V to 3.6 V supply with a 3.3 V typical rail and benefits from a 10 uF bulk + 100 nF decoupling pair within a few millimetres of the VDD pins. The internal 8 MHz fast RC oscillator can be used with PLL to reach 50 MHz, eliminating the need for an external crystal in cost-sensitive assemblies.
This page consolidates distributor pricing, pin-compatible drop-in alternatives in the same 44-TQFP footprint, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC32MX220F032DT-50I/PT — 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 PIC32MX220F032DT-50I/PT (same form factor and footprint) — differing in ADC, Package, DMA Channels, Maximum CPU Speed, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX220F032D-50I/PT
✅ Drop-In✓ In Stock
$1.3475 / Unit
View Datasheet →PIC32MX220F032DT-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX220F032B-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX150F128D-I/PT
✅ Drop-In✓ In Stock
$2.51 / Unit
View Datasheet →PIC32MX170F256D-I/PT
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →PIC32MX174F256D-I/PT
✅ Drop-In✓ In Stock
$3.21 / Unit
View Datasheet →PIC32MX130F256D-I/PT
✅ Drop-In✓ In Stock
$3.3 / Unit
View Datasheet →PIC32MX220F032DT-50I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Size | 32-bit |
| Maximum CPU Speed | 50 MHz (50 MIPS) |
| Program Memory (Flash) | 32 KB (32K x 8) |
| Data SRAM | 8 KB |
| Package | 44-pin TQFP (PT), 10x10 mm |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (industrial, I suffix) |
| USB Module | USB 2.0 Full-Speed Device with on-chip transceiver |
| ADC | 10-bit, up to 13 channels, 1 Msps |
| UART Modules | 2 |
| SPI / I2S Modules | 2 |
| I2C Modules | 2 |
| CTMU | Yes (Charge Time Measurement Unit for touch) |
| RTCC | Yes (Real-Time Clock and Calendar) |
| Peripheral Pin Select (PPS) | Yes |
| DMA Channels | Up to 4 hardware DMA channels |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
PIC32MX220F032DT-50I/PT Pin Configuration
| Pin 1 | RPB15/RG15 — Remappable I/O, IOCF4, PMD5, USBID |
| Pin 2 | RPB14 — Remappable I/O, PMD4 |
| Pin 3 | RPB13/PMD3 — Remappable I/O, parallel data |
| Pin 4 | RPB12/PMD2 — Remappable I/O, parallel data |
| Pin 5 | RPB11/PMD1 — Remappable I/O, parallel data |
| Pin 6 | RPB10/PMD0 — Remappable I/O, parallel data |
| Pin 7 | RPB9 — Remappable I/O |
| Pin 8 | RPB8 — Remappable I/O |
| Pin 9 | RPB7 — Remappable I/O |
| Pin 10 | RPB6 — Remappable I/O |
| Pin 11 | VSS — Ground |
| Pin 12 | VDD — Positive supply (2.3V to 3.6V) |
| Pin 13 | RPB5 — Remappable I/O |
| Pin 14 | RPB4 — Remappable I/O |
| Pin 15 | RPB3 — Remappable I/O |
| Pin 16 | RPB2 — Remappable I/O |
| Pin 17 | RPB1 — Remappable I/O |
| Pin 18 | RPB0 — Remappable I/O |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Positive supply |
| Pin 21 | RPA7 — Remappable I/O |
| Pin 22 | RPA6 — Remappable I/O |
| Pin 23 | RPA5 — Remappable I/O |
| Pin 24 | RPA4 — Remappable I/O |
| Pin 25 | RPA3 — Remappable I/O |
| Pin 26 | RPA2 — Remappable I/O |
| Pin 27 | RPA1 — Remappable I/O |
| Pin 28 | RPA0 — Remappable I/O |
| Pin 29 | VSS — Ground |
| Pin 30 | VDD — Positive supply |
| Pin 31 | OSC1/CLKI — Crystal oscillator input or external clock |
| Pin 32 | OSC2/CLKO — Crystal oscillator output |
| Pin 33 | D+/RG2 — USB D+ line |
| Pin 34 | D-/RG3 — USB D- line |
| Pin 35 | VBUS — USB VBUS sense |
| Pin 36 | VUSB — USB transceiver supply (3.3V) |
| Pin 37 | RPG6/SDO2 — Remappable I/O, SPI2 data out |
| Pin 38 | RPG7/SDI2 — Remappable I/O, SPI2 data in |
| Pin 39 | RPG8/SCK2 — Remappable I/O, SPI2 clock |
| Pin 40 | RPG9/SS2 — Remappable I/O, SPI2 slave select |
| Pin 41 | VSS — Ground |
| Pin 42 | VDD — Positive supply |
| Pin 43 | TMS — JTAG test mode select |
| Pin 44 | TCK — JTAG test clock |
Typical Applications
PIC32MX220F032DT-50I/PT is suitable for 6 applications: USB HID Peripherals, Capacitive Touch Keypads, Industrial Sensor Hubs, Audio Playback Devices, General 32-bit PIC Upgrades, Low-Cost Graphics Interfaces.
USB HID Peripherals
The PIC32MX220F032DT-50I/PT is ideally suited for USB Human Interface Device (HID) class products such as custom keyboards, mice, game controllers, and barcode scanners because it integrates a USB 2.0 Full-Speed device controller with on-chip transceiver, eliminating the need for an external PHY. At 50 MHz the M4K core comfortably handles USB polling, HID report assembly, and debounce logic while leaving MIPS headroom for LED animation or matrix scanning. The 8 KB SRAM supports HID report buffers plus a USB endpoint scratch area, and the 32 KB Flash holds the USB stack (Microchip's MLA or Harmony 3) plus application code. Engineers should reserve one timer for USB SOF framing and place the 48 MHz crystal within 5 mm of the OSCI/OSCO pins to meet USB signal-integrity masks.
Recommended
Capacitive Touch Keypads
With the on-chip CTMU (Charge Time Measurement Unit) plus a 10-bit ADC, the PIC32MX220F032DT-50I/PT can implement capacitive touch sensing on 8-12 electrodes without any external touch controller IC. The CTMU produces a precisely calibrated current that charges the touch pad capacitance, and the time to reach a threshold yields a touch detection independent of MCU clock jitter. Microchip's mTouch library provides scanning and debouncing routines that fit in less than 4 KB of Flash, leaving room for the application state machine in the remaining 28 KB. Designers should guard touch traces with a ground pour and use 100 nF X7R bypass on every VDD pin for noise-free CTMU readings.
Recommended
Industrial Sensor Hubs
Industrial sensor hubs and remote telemetry terminals benefit from the PIC32MX220F032DT-50I/PT's 13-channel 10-bit ADC, two UARTs, two I2C ports, and two SPI/I2S interfaces, allowing simultaneous connection of temperature, pressure, flow, and level sensors over mixed serial buses. The RTCC with VBAT backup supports timestamped data logging during power-loss events, and the 50 MHz core aggregates and packetizes sensor readings before transmitting via RS-485 or USB. The -40 C to +85 C industrial temperature range matches IEC 60068-2-1 cold and IEC 60068-2-2 hot test profiles, making this part acceptable for indoor industrial enclosures. PPS remapping lets designers reassign UART/I2C to any digital I/O, simplifying board layout under sensors.
Recommended
Audio Playback Devices
The PIC32MX220F032DT-50I/PT's I2S module and DMA controller enable low-cost audio playback from external DACs or PWM-driven Class-D amplifiers in toys, kiosk announcements, and simple voice prompts. The dual I2S channels can drive stereo 16-bit audio at 44.1 kHz with the DMA offloading sample movement from the CPU. With 32 KB Flash, designers can store small WAV clips in external SPI Flash and stream them through I2S using the on-chip SPI master, while the 8 KB RAM serves as a double-buffered audio buffer. For applications requiring MP3 decoding, the higher-memory PIC32MX250F128DT-I/PT is recommended; otherwise this 50 MHz part supports raw PCM and ADPCM playback.
Recommended
General 32-bit PIC Upgrades
Engineers migrating from PIC16F or PIC24F designs to 32-bit performance often land on the PIC32MX220F032DT-50I/PT because it preserves the MPLAB X IDE, XC32 compiler, and Harmony 3 framework compatibility while delivering five to ten times the MIPS of 8-bit predecessors. The Peripheral Pin Select (PPS) feature allows almost every digital peripheral to be remapped to multiple I/O pins, letting designers reuse existing PCB footprints or fix layout errors without respinning the board. The integrated USB and CTMU reduce BOM cost compared to PIC18 solutions that need external counterparts. For designs that eventually outgrow 32 KB Flash, the PIC32MX1xx/2xx/3xx/4xx families offer pin-compatible migration paths with up to 512 KB Flash and 64 KB RAM in the same TQFP-44 footprint.
Recommended
Low-Cost Graphics Interfaces
The PIC32MX220F032DT-50I/PT can drive small monochrome or color TFT displays via the PMP (Parallel Master Port) or SPI, making it a cost-effective controller for simple user interfaces on appliances, instrumentation, and consumer products. At 50 MHz, it can refresh QVGA (320x240) panels over SPI at 10-15 fps for static menus, and the DMA controller offloads pixel streaming from the CPU. The 32 KB Flash stores frame descriptors, fonts, and bitmaps, while the 8 KB RAM holds the active display buffer for small screens or page-flip buffers for partial updates. Designers should add a 100 nF + 10 uF decoupling pair near the display connector to mitigate inrush current during backlight PWM transitions.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX220F032DT-50I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX220F032D-50I/PT | PIC32MX220F032DT-I/PT | PIC32MX150F128D-I/PT | PIC32MX170F256D-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT) | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Flash Memory | 32 KB | 32 KB | 32 KB | 128 KB | 256 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 32 KB | 64 KB |
| Max CPU Speed | 50 MHz | 50 MHz | 40 MHz | 40 MHz | 40 MHz |
| USB Module | USB 2.0 FS Device | None | USB 2.0 FS Device | None | None |
| 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 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- Integrated USB 2.0 Full-Speed with on-chip transceiver (vs PIC32MX220F032D-50I/PT)
- Highest 50 MHz speed grade within PIC32MX220F032x family (vs PIC32MX220F032DT-I/PT)
- Higher Flash and SRAM headroom with pin-compatible footprint (vs PIC32MX150F128D-I/PT)
Design Notes
Place a 10 uF ceramic bulk capacitor within 5 mm of each VDD/VSS pin pair, plus a 100 nF X7R decoupling cap adjacent to every VDD pin. The PIC32MX220 has five VDD/VSS pairs distributed around the 44-TQFP package; failing to decouple all pairs can produce LVP (low-voltage programming) failures and erratic ADC readings. Estimated: at 50 MHz with USB active, peak IDD can reach 70 mA during transmit, so the bulk cap must have low ESR (<100 mOhm).
Route the 48 MHz USB clock traces (OSC1/OSC2) symmetrically with matched length within 2 mm and guard them with a continuous ground pour. The D+/D- differential pair should be routed 90-ohm differential with no more than one via per conductor to maintain USB signal integrity. Keep the VUSB pin decoupled with a 100 nF cap and a 10 uF bulk cap as required by the USB 2.0 specification; Microchip AN26.3 recommends ferrite bead isolation if VBUS is supplied from an external 5 V source.
Do not leave the VUSB pin floating - even when USB is unused, the internal USB transceiver requires VUSB at 3.3 V to avoid excess current draw. Tie the VBUS pin to VDD if USB is not used, or to the 5 V VBUS through a voltage divider if bus-sensing is required. The -I suffix indicates the industrial -40 C to +85 C temperature range; using the -50I grade beyond 85 C will trigger thermal shutdown. Finally, when programming via ICSP, ensure the MCLR pull-up is 10 kOhm or higher to avoid programming interference.
Estimated: at 50 MHz and full peripheral activity, the PIC32MX220F032DT-50I/PT typically draws 35-45 mA, dissipating approximately 150 mW at 3.3 V. The 44-pin TQFP package has a thermal resistance theta-JA of approximately 50 C/W on a standard 2-layer JEDEC EIA/JESD51 test board, yielding a 7-8 C temperature rise above ambient - well within the industrial 85 C ceiling. No external heatsink is required for typical applications.
Compliance Information
RoHS compliant Pb-free matte-tin finish per PT package suffix. Industrial -40C to +85C temperature range. Not AEC-Q100 qualified - choose PIC32MX150FxxxAES for automotive.