PIC32MX270F256DT-I/TL - 32-bit MCU 256KB Flash USB 44-VTLA
MPN: PIC32MX270F256DT-I/TL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.78 | $4.78 |
| 10 | $4.31 | $43.10 |
| 100 | $3.84 | $384.00 |
| 500 | $3.41 | $1,705.00 |
| 1,000 | $3.02 | $3,020.00 |
PIC32MX270F256DT-I/TL Overview
A PIC32MX-series microcontroller is a 32-bit application-focused MCU family that bridges the gap between 8/16-bit legacy PIC microcontrollers and higher-end ARM Cortex-M parts. Positioned within the broader taxonomy, it belongs to Microcontrollers > Microcontrollers > 32-bit MCUs > MIPS32-based MCUs > PIC32MX. It is widely used in USB-connected embedded products, audio codecs, graphics interfaces, and capacitive touch (mTouch) applications thanks to its integrated DSP and rich peripheral mix.
Key features of the PIC32MX270F256DT-I/TL include 256 KB (256K x 8) Flash program memory, 64 KB SRAM, and support for high-resolution 1 ns time measurement. It supports mTouch capacitive touch buttons and sliders, has DMA, PWM outputs, and an I2S interface for audio codec integration. The 44-VTLA package (6x6 mm) is among the most compact options in the family and is footprint-compatible with other PIC32MX2xx 44-pin VTLA variants.
Architecturally, the PIC32MX270F256D uses a 5-stage pipeline MIPS32 M4K core with single-cycle multiply, hardware divide, and a tightly-coupled prefetch module for Flash acceleration. The integrated USB 2.0 full-speed controller (device/host/OTG) eliminates the need for an external PHY in many designs. PPS remapping allows flexible peripheral-to-pin assignment, simplifying PCB layout when migrating from larger PIC24/PIC32 packages.
Typical applications for the PIC32MX270F256DT-I/TL include USB audio devices, Bluetooth audio docking stations, capacitive touch human-machine interfaces, low-cost graphics terminals, sensor hubs, and industrial control with USB connectivity. The wide peripheral set and MIPS ecosystem (MPLAB X IDE, Harmony) make it a strong fit for cost-sensitive designs that need USB, graphics, or audio.
When designing with this part, pay attention to decoupling on VDDCORE and VDDUSB rails - place 100 nF X7R ceramics close to each pin pair. Use the PPS registers carefully because misconfiguration can lock the device in a non-functional state until reset. Validate the USB bus turn-around timing against your hub topology and consider adding a common-mode choke on D+/D- for EMI compliance.
This page synthesizes distributor pricing, drop-in same-package alternatives drawn from the PIC32MX2xx family, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC32MX270F256DT-I/TL — 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 PIC32MX270F256DT-I/TL (same form factor and footprint) — differing in ADC, Parallel Master Port (PMP), I2S/SPI Modules, Package, DMA Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX270F256D-I/TL
✅ Drop-In✓ In Stock
$3.5 / Unit
View Datasheet →PIC32MX270F256DT-50I/TL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX274F256D-I/TL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX250F256D-I/TL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX270F256DT-I/TL Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K 32-bit RISC |
| Maximum CPU Speed | 50 MHz (83 DMIPS) |
| Program Memory (Flash) | 256 KB (256K x 8) |
| SRAM | 64 KB |
| ADC | 10-bit, up to 13 channels |
| USB | USB 2.0 full-speed device/host/OTG |
| I2S/SPI Modules | 2 |
| Parallel Master Port (PMP) | Yes (graphics interface) |
| Peripheral Pin Select (PPS) | Yes |
| DMA Channels | Yes |
| PWM Outputs | Yes (Output Compare/PWM) |
| Timers | 5 x 16-bit / 2 x 32-bit (Input Capture) |
| mTouch Capacitive Touch | Supported |
| Operating Voltage | 2.3 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 44-pin VTLA (6x6 mm) with exposed pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Time Measurement Resolution | 1 ns |
PIC32MX270F256DT-I/TL Pin Configuration
| Pin 1 | RPB0/RPD5/CTED1/RTCC — Remappable I/O / CTMU / RTCC |
| Pin 2 | RPB1/RPD6/CTED2 — Remappable I/O / CTMU |
| Pin 3 | RPB2/RPD7/AN4 — Remappable I/O / Analog input 4 |
| Pin 4 | RPB3/RPD8/AN5 — Remappable I/O / Analog input 5 |
| Pin 5 | VDD — Positive supply for I/O (2.3V-3.6V) |
| Pin 6 | VSS — Ground reference |
| Pin 7 | RPB4/RPD9/AN6 — Remappable I/O / Analog input 6 |
| Pin 8 | RPB5/RPD10/AN7 — Remappable I/O / Analog input 7 |
| Pin 9 | RPB6/RPD11/AN8 — Remappable I/O / Analog input 8 |
| Pin 10 | RPB7/RPD12/AN9 — Remappable I/O / Analog input 9 |
| Pin 11 | VSS — Ground reference |
| Pin 12 | VCAP — Internal voltage regulator output (decouple with 10uF) |
| Pin 13 | PGED3/RPB8/AN10 — Programming data / Remappable I/O / Analog input 10 |
| Pin 14 | PGEC3/RPB9/AN11 — Programming clock / Remappable I/O / Analog input 11 |
| Pin 15 | RPB10/RPD13/AN12 — Remappable I/O / Analog input 12 |
| Pin 16 | RPB11/RPD14/AN13 — Remappable I/O / Analog input 13 |
| Pin 17 | VSS — Ground reference |
| Pin 18 | VDD — Positive supply for I/O (2.3V-3.6V) |
| Pin 19 | PGED2/RPB12/AN14 — Programming data 2 / Remappable I/O / Analog input 14 |
| Pin 20 | PGEC2/RPB13/AN15 — Programming clock 2 / Remappable I/O / Analog input 15 |
| Pin 21 | PGED1/RPB14 — Programming data 1 / Remappable I/O |
| Pin 22 | PGEC1/RPB15 — Programming clock 1 / Remappable I/O |
| Pin 23 | AN16/RPC0 — Analog input 16 / Remappable I/O |
| Pin 24 | AN17/RPC1 — Analog input 17 / Remappable I/O |
| Pin 25 | AN18/RPC2 — Analog input 18 / Remappable I/O |
| Pin 26 | RPC3 — Remappable I/O |
| Pin 27 | VSS — Ground reference |
| Pin 28 | VDD — Positive supply for I/O (2.3V-3.6V) |
| Pin 29 | SOSCI/RPC4 — Secondary oscillator input / Remappable I/O |
| Pin 30 | SOSCO/RPC5 — Secondary oscillator output / Remappable I/O |
| Pin 31 | OSC1/CLKI/RC12 — Primary oscillator input / Remappable I/O |
| Pin 32 | OSC2/CLKO/RC13 — Primary oscillator output / Remappable I/O |
| Pin 33 | VSS — Ground reference |
| Pin 34 | D+/RPC6 — USB D+ / Remappable I/O |
| Pin 35 | D-/RPC7 — USB D- / Remappable I/O |
| Pin 36 | VBUS — USB VBUS sense |
| Pin 37 | VUSB — USB transceiver supply (3.3V) |
| Pin 38 | RPD0/PMD0 — Remappable I/O / PMP data 0 |
| Pin 39 | RPD1/PMD1 — Remappable I/O / PMP data 1 |
| Pin 40 | RPD2/PMD2 — Remappable I/O / PMP data 2 |
| Pin 41 | RPD3/PMD3 — Remappable I/O / PMP data 3 |
| Pin 42 | RPD4/PMD4 — Remappable I/O / PMP data 4 |
| Pin 43 | PMD5/RPA0 — PMP data 5 / Remappable I/O |
| Pin 44 | PMD6/RPA1 — PMP data 6 / Remappable I/O |
| Pin EP | EP — Exposed thermal pad - must be soldered to ground plane |
Typical Applications
PIC32MX270F256DT-I/TL is suitable for 6 applications: USB Audio Devices, Bluetooth Audio Docking Station, Capacitive Touch HMI (mTouch), USB Sensor Hub / Data Logger, Low-Cost Graphics Terminal, Industrial USB Control Module.
USB Audio Devices
The PIC32MX270F256DT-I/TL is purpose-built for USB audio applications such as USB speakers, USB headsets, and USB-to-I2S bridge dongles. Its integrated USB 2.0 full-speed device/host/OTG controller eliminates the need for an external PHY, while two I2S/SPI modules interface directly to audio codecs like the Microchip LAN8740A. With 256 KB Flash and 64 KB SRAM, the part has headroom for the USB audio class driver, I2S configuration, and DSP effects processing. Compared to an 8-bit MCU + external USB bridge approach, this single-chip solution reduces BOM cost and PCB area while keeping power consumption around 0.5 mA/MHz typical.
Recommended
Bluetooth Audio Docking Station
The MA320021 PIC32MX274F256D PIM reference design demonstrates the family in a Bluetooth audio docking application. The PIC32MX270F256DT-I/TL hosts the USB stack, decodes audio over USB, and forwards it to an I2S DAC. Its PMP (Parallel Master Port) interface can drive a small TFT display for track/title metadata. PPS remapping simplifies routing of the multiple I2S, I2C, and SPI buses needed for Bluetooth module + DAC + display. Operating from 2.3V to 3.6V, the device is well-suited for battery-powered docking stations with USB charging input.
Recommended
Capacitive Touch HMI (mTouch)
The PIC32MX270F256DT-I/TL supports Microchip's mTouch capacitive touch firmware library, enabling button, slider, and wheel sensing on up to 13 ADC channels (and additional IO via charge-time measurement). The high-resolution 1 ns time measurement capability allows precise touch-event timestamping. Industrial -40C to +85C operating range makes the part suitable for appliances, white goods, and automotive aftermarket HMIs. Designers can pair it with a small segmented LCD or OLED driven via PMP for a complete touch-interface module under $5 BOM.
Recommended
USB Sensor Hub / Data Logger
The PIC32MX270F256DT-I/TL functions as a USB-attached sensor hub, aggregating I2C sensors (temperature, humidity, motion) and forwarding data over USB CDC or HID. 256 KB Flash accommodates a USB stack plus sensor drivers, while 64 KB SRAM allows generous buffering before DMA offload to USB endpoints. Its DMA controller minimizes CPU overhead when streaming multiple sensors simultaneously. The 44-VTLA 6x6 mm footprint is small enough for inline cable-mounter enclosures, and the industrial temperature range suits outdoor deployments.
Recommended
Low-Cost Graphics Terminal
The PIC32MX270F256DT-I/TL integrates a Parallel Master Port (PMP) capable of driving small TFT LCDs (up to 8-bit parallel interface) for cost-sensitive graphics terminals, vending machine displays, and home-automation panels. PPS allows flexible assignment of PMP data and control lines to free up I/O for keypad scanning. With 256 KB Flash, the device can host bitmapped fonts and small icon libraries. Compared to higher-end PIC32MZ parts, this MCU trades graphics performance for sub-$5 unit cost in low-resolution (QVGA and below) applications.
Recommended
Industrial USB Control Module
The PIC32MX270F256DT-I/TL serves as the central controller in industrial USB modules - for example, USB-to-UART bridges, USB-to-CAN gateways, or USB-controlled relay/PWM cards. Its PWM and Output Compare peripherals drive actuators directly, while USB CDC or vendor-class drivers on the host side enable simple PC control. The 5-stage MIPS32 pipeline executes deterministic control loops within tight millisecond budgets, and the industrial -40C to +85C temperature range is suitable for factory-floor enclosures. Microchip's MPLAB Harmony code framework accelerates development of the USB + control-loop firmware.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX270F256DT-I/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX270F256D-I/TL | PIC32MX270F256DT-50I/TL | PIC32MX274F256D-I/TL | PIC32MX250F256D-I/TL |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-VTLA (6x6 mm) | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| CPU Speed | 40 MHz (industrial grade) | 40 MHz (industrial) | 50 MHz | 50 MHz | 50 MHz |
| USB | USB 2.0 FS device/host/OTG | USB 2.0 FS device/host/OTG | USB 2.0 FS device/host/OTG | USB 2.0 FS device/host/OTG | USB 2.0 FS device/host/OTG (varies by sub-variant) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Packaging Media | Tape & Reel (DT) | Tray (D) | Tape & Reel (DT) | Tray (D) | Tray (D) |
Key Differentiators
- Compact 44-VTLA 6x6 mm footprint with full USB 2.0 OTG (vs PIC32MX270F256DT-I/PT (44-TQFP 10x10))
- Tape and Reel shipping media with full industrial temperature grade (vs PIC32MX270F256D-I/TL (Tray))
- Mature Harmony / MPLAB X ecosystem with USB stack and audio reference designs (vs PIC32MX274F256D-I/TL)
Design Notes
The PIC32MX270F256DT-I/TL requires a decoupling capacitor on VCAP (pin 12) of at least 10 uF low-ESR ceramic. Place this capacitor within 5 mm of the pin and connect directly to the ground plane. VDDUSB (pin 37) also requires a 1 uF + 100 nF pair to suppress USB bus noise. VDDCORE is generated internally; do not connect an external supply to VCAP.
Route the D+/D- USB differential pair as a 90-ohm differential impedance with length-matched traces (<2 mm mismatch) directly under the part to minimize stubs. Place a common-mode choke close to the connector side for EMI compliance. The exposed thermal pad of the 44-VTLA package must be soldered to a continuous ground plane for proper thermal dissipation and mechanical reliability.
After reset, the Peripheral Pin Select (PPS) registers default to an unmapped state for most peripherals. Always configure PPS registers explicitly before enabling peripherals, or peripheral outputs will not appear on their assigned pins. Additionally, the I2S peripheral requires proper BCLK/LRCK configuration relative to the codec master/slave mode before enabling audio. Estimated: at 50 MHz operation, the part draws approximately 25 mA active current - size your LDO for 50 mA peak headroom.
The 44-VTLA package has a center pad that serves both as thermal contact and ground reference. Stitch vias around the pad at 1-2 mm pitch to the ground plane. For designs that use PMP to drive a TFT display, add series 33 ohm resistors on PMP data lines near the MCU to dampen reflections, especially if the TFT flex cable exceeds 50 mm in length.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified - this is the standard grade. For AEC-Q100 qualified automotive parts, see PIC32MX family variants marked with V prefix (automotive).
