PIC32MX270F512LT-50I/PF - 50MHz 32-bit MCU 512KB Flash 100-TQFP | Microchip
MPN: PIC32MX270F512LT-50I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.92 | $9.92 |
| 10 | $8.95 | $89.50 |
| 100 | $7.94 | $794.00 |
| 500 | $7.05 | $3,525.00 |
| 1,000 | $6.32 | $6,320.00 |
PIC32MX270F512LT-50I/PF Overview
A 32-bit microcontroller (MCU) is an embedded computing device that integrates a CPU core, program and data memory, and a configurable peripheral set on a single silicon die. PIC32MX devices sit in the broader taxonomy of microcontroller -> embedded processor -> semiconductor IC. Compared with 8-bit and 16-bit MCUs, 32-bit parts deliver higher throughput per MHz, larger linear address space, and richer peripherals, at the cost of slightly higher current draw. The PIC32MX2xx family specifically targets cost-sensitive 32-bit applications that still need USB, PMP graphics interfaces, and audio codec support.
Key features of this part include 50 MHz / 83 DMIPS core performance, 512 KB Flash (512K x 8) and 64 KB SRAM, two I2S modules and four SPI modules for codec and serial communications, Peripheral Pin Select (PPS) for flexible pin-function remapping, Parallel Master Port (PMP) with dual buffers for graphics interfaces, an integrated USB 2.0 full-speed OTG/device/host controller, a 10-bit 1 Msps ADC with up to 48 channels, and an operating voltage range of 2.3V to 3.6V. The industrial temperature grade (-40C to +85C) supports harsh-environment designs.
Architecturally, the PIC32MX270F512L family uses the MIPS32 M4K core, a 5-stage pipeline Harvard architecture with single-cycle multiply and hardware divide. The 512 KB Flash is single-bank and supports run-time self-programming under firmware control. PPS allows most digital peripherals to be reassigned to a wide range of physical pins, simplifying PCB routing in densely populated designs.
Typical applications include USB audio interfaces and headsets, low-cost graphics HMI panels, industrial control and sensor hubs, consumer electronics with TFT/LCD displays, and home automation controllers. The combination of I2S, USB, and PMP graphics interfaces makes it a natural fit for multimedia-rich embedded products.
When designing with this MCU, allocate careful attention to decoupling: place 0.1 uF and 10 uF capacitors close to every VDD/VSS pair, and follow Microchip's trace-layout recommendations for the USB differential pair (D+/D-) to maintain full-speed signal integrity. Always use the latest MPLAB Harmony code framework to leverage validated peripheral drivers.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing a single, decision-ready reference for engineers evaluating PIC32MX270F512LT-50I/PF for new designs or second-source qualification.
Drop-in alternatives for PIC32MX270F512LT-50I/PF — 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 PIC32MX270F512LT-50I/PF (same form factor and footprint) — differing in Package, Core Architecture, ADC, Parallel Master Port (PMP), I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX270F512L-50I/PF
✅ Drop-In✓ In Stock
$5.2 / Unit
View Datasheet →PIC32MX270F512LT-50I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.85 / Unit
View Datasheet →PIC32MX170F512L-50I/PF
✅ Drop-In✓ In Stock
$5.55 / Unit
View Datasheet →PIC32MX250F256L-50I/PF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX230F256D-50I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.15 / Unit
View Datasheet →PIC32MX254F128D-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →PIC32MX270F512LT-50I/PF Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Maximum CPU Speed | 50 MHz |
| DMIPS Performance | 83 DMIPS |
| Program Memory (Flash) | 512 KB (512K x 8) |
| Data Memory (SRAM) | 64 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 100-TQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| I/O Pins | 85 |
| ADC | 10-bit, up to 48 channels, 1 Msps |
| USB | USB 2.0 Full-Speed OTG/Device/Host |
| SPI Modules | 4 |
| I2S Modules | 2 |
| I2C Modules | 2 |
| UART Modules | 6 |
| Parallel Master Port (PMP) | Yes, dual buffers for graphics |
| Peripheral Pin Select (PPS) | Yes |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
| Lead-Free | Yes |
| Packaging | Tape & Reel |
PIC32MX270F512LT-50I/PF 100-tqfp (14x14 mm) Pin Configuration Guide
Pin configuration for PIC32MX270F512LT-50I/PF (100-tqfp (14x14 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC32MX270F512LT-50I/PF.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX270F512LT-50I/PF is suitable for 6 applications: USB Audio Interface and Headsets, Low-Cost Graphics HMI Panels, Industrial Sensor Hubs, Consumer Electronics with USB Connectivity, Home Automation Controllers, Audio Streaming Dongles.
USB Audio Interface and Headsets
The PIC32MX270F512LT-50I/PF is a strong fit for USB audio peripherals because it integrates a USB 2.0 full-speed OTG controller alongside two dedicated I2S interfaces and 64 KB SRAM for audio buffering. At 50 MHz / 83 DMIPS the M4K core comfortably handles 48 kHz / 24-bit stereo USB audio streams with margin for custom DSP, volume control, and HID control channels. The two I2S modules enable simultaneous input (microphone) and output (headphone) paths, and the 512 KB Flash accommodates full USB audio class 1.0 stacks plus effect processing. A typical implementation places the MCU between a USB connector (with proper D+/D- 90-ohm differential routing) and an external 24-bit audio codec such as the Microchip AK4642, with the 3.3V rail supplied by an LDO downstream of the USB VBUS pin.
Recommended
Low-Cost Graphics HMI Panels
For HMI applications driving small TFT or LCD panels, the PIC32MX270F512LT-50I/PF delivers a Parallel Master Port (PMP) with dual read/write buffers that can directly interface to display controllers without external logic. The 512 KB Flash stores font tables, image assets, and UI state machines, while 64 KB SRAM provides framebuffer headroom for small QVGA/WQVGA panels. The 50 MHz core supports 30+ FPS refresh rates on 320x240 panels, and PPS allows flexible pin assignment for both the PMP data bus and touch controller SPI. The 10-bit ADC can read a resistive touch panel directly via the on-chip charge time measurement unit (CTMU), reducing external component count and BOM cost in cost-sensitive consumer HMI products such as appliance control panels and portable instrument front panels.
Recommended
Industrial Sensor Hubs
In industrial sensor hub applications, the PIC32MX270F512LT-50I/PF's 10-bit 1 Msps ADC with up to 48 channels and 4 SPI plus 2 I2C interfaces allow simultaneous connection of multiple analog and digital sensors. The industrial -40C to +85C temperature range supports deployment in factory automation and outdoor equipment cabinets. The 64 KB SRAM accommodates FIFO buffers for burst sampling, while 512 KB Flash stores calibration tables and protocol stacks (Modbus, CANopen). The integrated USB controller enables easy configuration and data log download via a service port. Typical designs use the 6 UART modules for RS-232/RS-485 multi-drop sensor networks, with PPS routing the UART signals to convenient PCB locations while keeping analog sensor channels grouped on dedicated ADC-capable pins.
Recommended
Consumer Electronics with USB Connectivity
Consumer products that require USB connectivity combined with reasonable processing headroom benefit from the PIC32MX270F512LT-50I/PF's integrated USB 2.0 full-speed OTG and 50 MHz/83 DMIPS core. Applications include USB MIDI controllers, gaming peripherals, programmable remote controls, and USB-upgradeable home appliances. The 512 KB Flash stores USB HID stacks plus custom application logic, while PPS allows the same PCB layout to be reused across product variants with different GPIO mappings. The 2.3-3.6V supply range supports direct battery operation from a single Li-ion cell when paired with a buck-boost converter, and the small 14x14 mm TQFP package fits within space-constrained enclosures such as handheld game controllers and remote-control housings.
Recommended
Home Automation Controllers
The PIC32MX270F512LT-50I/PF is well suited as a central home automation controller bridging multiple wireless protocols and wired sensor networks. With 6 UART modules, 2 I2C, 4 SPI, and USB, a single MCU can interface to Wi-Fi modules (ESP32 co-processor), Zigbee or Z-Wave radios on UART, I2C sensor arrays, SPI flash storage, and a USB host port for firmware update sticks. The 64 KB SRAM supports MQTT message buffering and TLS handshake scratch memory when offloading crypto to a companion ATECC608B secure element. The PMP with dual buffers can drive a small local display for status indication. The 100-pin TQFP package gives 85 I/O pins, enough to handle multiple radio modules simultaneously without mux chips.
Recommended
Audio Streaming Dongles
USB audio streaming dongles, such as those that bridge a digital audio source to analog speakers or headphones, leverage the PIC32MX270F512LT-50I/PF's combined USB 2.0 full-speed controller and dual I2S interfaces. The MCU receives USB audio class 1.0 isochronous packets, re-clocks them to an I2S output stream, and forwards to an external DAC such as the PCM5102A or the AK4493. The 50 MHz / 83 DMIPS core performs rate-matching and asynchronous re-sampling in software if needed. With 64 KB SRAM, designers can implement a software PLL or ASRC (asynchronous sample rate converter) without external memory. The 2.3-3.6V supply is well-matched to USB bus-powered designs using a small LDO downstream of the 5V VBUS rail, while the industrial temperature grade ensures reliable operation in enclosed AV equipment.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX270F512LT-50I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX270F512L-50I/PF | PIC32MX170F512L-50I/PF | PIC32MX250F256L-50I/PF | PIC32MX230F256D-50I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) | 100-TQFP (12x12 mm) |
| Core | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Max CPU Speed | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 40 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 32 KB | 16 KB |
| USB | USB 2.0 FS OTG/Device/Host | USB 2.0 FS OTG | None | USB 2.0 FS OTG | USB 2.0 FS Device |
| I2S Modules | 2 | 2 | 0 | 2 | 0 |
| 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 | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Largest memory in 100-pin PIC32MX1xx/2xx family (vs PIC32MX170F512L-50I/PF)
- Dual I2S audio interfaces on-chip (vs PIC32MX230F256D-50I/PT)
- Peripheral Pin Select (PPS) flexibility (vs PIC32MX250F256L-50I/PF)
Design Notes
The PIC32MX270F512LT-50I/PF requires a clean 2.3-3.6V supply on every VDD pin (12, 28, 56, 75 on the 100-TQFP) with a paired 0.1 uF ceramic decoupling capacitor placed within 3 mm of each VDD/VSS pin pair. Add a bulk 10 uF tantalum or ceramic capacitor near the supply input. The integrated 1.8V core LDO draws transient currents up to 50 mA during core switching events, so the input decoupling must handle brief load steps without exceeding the 3.6V absolute maximum.
For USB full-speed signal integrity, route the D+ and D- differential pair with 90-ohm differential impedance, matched lengths within 150 mil, and continuous ground reference beneath the traces. Place the 27-ohm series damping resistors within 4 mm of the MCU pins. Avoid routing USB signals near clock or switching regulator traces; keep at least 50 mil clearance. Add a 0.1 uF capacitor near the VUSB pin if used for internal pull-up reference.
Use Peripheral Pin Select (PPS) to remap digital peripherals to convenient PCB locations, but keep analog-capable pins (ANx) reserved for ADC inputs to preserve the analog signal path. Group high-speed SPI and I2S signals with matched-length routing and ground-guard traces. Place the 12 MHz primary oscillator crystal within 5 mm of the OSC1/OSC2 pins with load capacitors matched to the crystal CL specification, typically 18-27 pF for low-ESR quartz.
Do not leave any VDD pin floating - every VDD and VSS pin on the 100-TQFP must be connected for proper operation and programming. When using ICSP for debug, ensure the PGECx and PGEDx pins are dedicated to programming in production or protected via firmware to prevent accidental reconfiguration via PPS. The device enters reset if the MCLR pin is held low; always use a 10 kohm pull-up on MCLR.
When driving PMP to an external display controller, add 33-ohm series damping resistors on the 8/16-bit data bus and PMRD/PMWR control lines to reduce edge ringing on cables longer than 50 mm. Use slew-rate limiting on heavily-loaded PMP outputs if EMI becomes a concern. For I2S audio paths, keep the MCLK/LRCK/BCLK traces matched within 25 mm and group them tightly to maintain clock-to-data timing margins.
Compliance Information
RoHS and REACH compliant per Microchip product page; industrial -40C to +85C temperature grade; not AEC-Q100 qualified (use PIC32MXxxx-V or PIC32MK automotive variants for vehicle applications).
