PIC32MX270F512HT-50I/MR - 50MHz 32-bit MCU 512KB Flash 64-QFN
Référence : PIC32MX270F512HT-50I/MR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.99 | $6,99 |
| 10 | $6.49 | $64,90 |
| 100 | $5.85 | $585,00 |
| 500 | $5.21 | $2 605,00 |
| 1 000 | $4.74 | $4 740,00 |
PIC32MX270F512HT-50I/MR Présentation
A 32-bit microcontroller (MCU) is an embedded processor core that fetches, decodes, and executes 32-bit-wide instructions, providing roughly an order-of-magnitude higher throughput than 8/16-bit MCUs while integrating Flash, SRAM, and a programmable peripheral set on a single die. PIC32MX devices sit in the hierarchy: 32-bit MCU -> MIPS M4K core -> PIC32 family -> Microchip 32-bit microcontroller portfolio -> embedded semiconductor. They compete with Cortex-M3/M4 parts from ST (STM32F1/F4), NXP (LPC176x/LPC15xx), and Renesas RX.
Key features of the PIC32MX270F512HT-50I/MR include a USB 2.0 Full-Speed On-The-Go controller, three I2S/SPI modules for codec and serial connectivity, Peripheral Pin Select (PPS) remappable I/O, a Parallel Master Port (PMP) with dual buffers for graphics or external bus interfaces, three analog comparators, a 10-bit ADC, RTCC, CTMU, and multiple timers. The 64-QFN package provides 53 general-purpose I/O lines plus dedicated oscillator, programming, and USB pins.
The architecture combines a 5-stage MIPS32 M4K pipeline with single-cycle multiply, hardware divider, and a zero-wait-state Flash prefetch buffer. PPS allows peripheral functions to be mapped to a wide selection of physical pins at runtime, which is invaluable for routing analog and digital signals on dense PCBs. Internal 8 MHz and 32 kHz oscillators plus four PLL modes support a wide range of system clocks without external crystals.
Typical applications include USB peripherals and HID devices, audio streaming via I2S, low-cost graphics displays through PMP, industrial control and sensor hubs, and connected IoT appliances. The combination of USB OTG and 512 KB Flash makes it well suited to devices such as data loggers, smart-home gateways, and small-form-factor HMI panels.
When designing with this part, review the decoupling scheme - place 0.1uF plus bulk caps on every VDD/AVDD pair - and use PPS extensively to avoid pin-out conflicts. Confirm that USB DP/DM traces are 90-ohm differential and length-matched.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour PIC32MX270F512HT-50I/MR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC32MX270F512HT-50I/MR (même facteur de forme et même empreinte) — différant par Package, ADC, Operating Temperature, DMA Channels, USB.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC32MX270F512HT-I/MR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC32MX270F256HT-50I/MR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC32MX250F256HT-I/MR
✅ Remplacement direct✓ En stock
$3.35 / unité
Voir la fiche technique →PIC32MX150F256HT-I/MR
✅ Remplacement direct✓ En stock
$5.45 / unité
Voir la fiche technique →PIC32MX270F512HT-50I/MR Valeurs maximales et caractéristiques électriques
| Core | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 50 MHz (83 DMIPS) |
| Program Flash Memory | 512 KB (512K x 8) |
| Data SRAM | 64 KB |
| Boîtier | 64-pin QFN (9x9 mm) |
| Plage de température de fonctionnement | -40C to +85C (industrial, 'I' suffix) |
| Operating Voltage Range | 2.3V to 3.6V |
| USB Controller | USB 2.0 Full-Speed Device/Host/OTG |
| I/O Pins | Up to 53 |
| SPI Modules | 3 |
| I2S Modules | 2 |
| I2C Modules | 2 |
| UART Modules | 2 |
| Parallel Master Port (PMP) | Yes, with dual buffers |
| ADC | 10-bit, up to 16 channels |
| Analog Comparators | 3 |
| Timers | 5 x 16-bit + 2 x 32-bit |
| RTCC | Yes |
| CTMU | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Type de montage | Surface Mount (QFN, tape and reel) |
| Statut RoHS | Compliant |
Configuration des broches de PIC32MX270F512HT-50I/MR
| Broche 1 | RPB0/AN0 — Remappable I/O / analog input 0 |
| Broche 2 | RPB1/AN1 — Remappable I/O / analog input 1 |
| Broche 3 | RPB2/AN2 — Remappable I/O / analog input 2 |
| Broche 4 | RPB3/AN3 — Remappable I/O / analog input 3 |
| Broche 5 | VDD — I/O supply voltage |
| Broche 6 | VSS — Ground reference for I/O |
| Broche 7 | RPB4/AN4 — Remappable I/O / analog input 4 |
| Broche 8 | RPB5/AN5 — Remappable I/O / analog input 5 |
| Broche 9 | RPB6/AN6 — Remappable I/O / analog input 6 |
| Broche 10 | RPB7/AN7 — Remappable I/O / analog input 7 |
| Broche 11 | RPC0 — Remappable I/O |
| Broche 12 | RPC1 — Remappable I/O |
| Broche 13 | RPC2 — Remappable I/O |
| Broche 14 | RPC3 — Remappable I/O |
| Broche 15 | VSS — Ground |
| Broche 16 | VDD — I/O supply voltage |
| Broche 17 | RPC4 — Remappable I/O |
| Broche 18 | RPC5 — Remappable I/O |
| Broche 19 | RPC6 — Remappable I/O |
| Broche 20 | RPC7 — Remappable I/O |
| Broche 21 | RPC8 — Remappable I/O |
| Broche 22 | RPC9 — Remappable I/O |
| Broche 23 | VUSB — USB transceiver supply |
| Broche 24 | D- — USB D- differential data line |
| Broche 25 | D+ — USB D+ differential data line |
| Broche 26 | VSS — Ground |
| Broche 27 | VDD — I/O supply voltage |
| Broche 28 | OSC1/CLKI/RC13 — Crystal oscillator input / external clock / remappable I/O |
| Broche 29 | OSC2/CLKO/RC14 — Crystal oscillator output / clock out / remappable I/O |
| Broche 30 | RPD0/AN8 — Remappable I/O / analog input 8 |
| Broche 31 | RPD1/AN9 — Remappable I/O / analog input 9 |
| Broche 32 | RPD2/AN10 — Remappable I/O / analog input 10 |
| Broche 33 | RPD3/AN11 — Remappable I/O / analog input 11 |
| Broche 34 | RPD4/AN12 — Remappable I/O / analog input 12 |
| Broche 35 | RPD5/AN13 — Remappable I/O / analog input 13 |
| Broche 36 | RPD6/AN14 — Remappable I/O / analog input 14 |
| Broche 37 | RPD7/AN15 — Remappable I/O / analog input 15 |
| Broche 38 | RPD8/RTCC — Remappable I/O / RTCC output |
| Broche 39 | RPD9 — Remappable I/O |
| Broche 40 | RPD10 — Remappable I/O |
| Broche 41 | RPD11 — Remappable I/O |
| Broche 42 | VSS — Ground |
| Broche 43 | VDD — I/O supply voltage |
| Broche 44 | RPD12 — Remappable I/O |
| Broche 45 | RPD13 — Remappable I/O |
| Broche 46 | RPD14 — Remappable I/O |
| Broche 47 | RPD15 — Remappable I/O |
| Broche 48 | RPE0/PMA3 — Remappable I/O / Parallel Master Port address 3 |
| Broche 49 | RPE1/PMA4 — Remappable I/O / PMP address 4 |
| Broche 50 | RPE2/PMA5 — Remappable I/O / PMP address 5 |
| Broche 51 | RPE3/PMA6 — Remappable I/O / PMP address 6 |
| Broche 52 | RPE4/PMA7 — Remappable I/O / PMP address 7 |
| Broche 53 | RPE5 — Remappable I/O |
| Broche 54 | RPE6 — Remappable I/O |
| Broche 55 | RPE7/PMD7 — Remappable I/O / PMP data 7 |
| Broche 56 | RPE8/PMD6 — Remappable I/O / PMP data 6 |
| Broche 57 | RPE9/PMD5 — Remappable I/O / PMP data 5 |
| Broche 58 | VSS — Ground |
| Broche 59 | AVDD — Analog supply voltage |
| Broche 60 | AVSS — Analog ground |
| Broche 61 | RPF0/PMD0 — Remappable I/O / PMP data 0 |
| Broche 62 | RPF1/PMD1 — Remappable I/O / PMP data 1 |
| Broche 63 | RPF2/PMD2 — Remappable I/O / PMP data 2 |
| Broche 64 | RPF3/PMD3 — Remappable I/O / PMP data 3 |
| Broche 65 | RPF4/PMD4 — Remappable I/O / PMP data 4 |
| Broche 66 | EPAD — Exposed thermal pad - solder to PCB ground |
Applications typiques
PIC32MX270F512HT-50I/MR convient pour 7 applications: USB HID and Data Acquisition Peripherals, I2S Audio Streaming Devices, Industrial Sensor Hubs and Modbus Nodes, Low-Cost Graphical HMI Displays, Connected Home and IoT Appliances, Medical Point-of-Care and Wellness Devices, Educational and Hobby Development Boards.
USB HID and Data Acquisition Peripherals
The PIC32MX270F512HT-50I/MR is a strong fit for USB peripherals because its on-chip USB 2.0 Full-Speed OTG controller eliminates external PHY or transceiver BOM. The 512 KB Flash accommodates the Microchip Harmony USB stack plus application logic, while 64 KB SRAM supports double-buffered isochronous transfers at 64 bytes per microframe. Designers use the peripheral pin select (PPS) to remap SPI/I2C sensors to convenient PCB locations while keeping DP/DM on fixed USB pins. Compared with 8-bit MCUs that need an external USB bridge, this single-chip approach reduces BOM, board area, and firmware complexity - ideal for HID-class devices, custom data loggers, and tethered instrumentation that enumerates as a vendor-specific or composite USB device.
Recommandé
I2S Audio Streaming Devices
With two I2S modules and DMA support, the PIC32MX270F512HT-50I/MR can stream full-duplex stereo audio up to 48 kHz sample rates, suitable for Bluetooth/Wi-Fi audio sinks, headphone amplifiers, and conference microphone arrays. The 50 MHz core provides ample headroom for sample-rate conversion, biquad filtering, and USB audio class 1.0 enumeration. Connect an external audio codec such as the Texas Instruments TLV320AIC3254 or Cirrus Logic CS43L22 to the I2S lines routed through PPS. The 64 KB SRAM accommodates 8 ms of stereo 48 kHz/24-bit buffering plus protocol stack. For higher sample rates or multi-channel DSP, scale up to PIC32MZ or Cortex-M7 parts.
Recommandé
Industrial Sensor Hubs and Modbus Nodes
Industrial sensor hubs benefit from the PIC32MX270F512HT-50I/MR combination of USB-OTG for local configuration, two UART channels for RS-485/Modbus RTU, and 16-channel 10-bit ADC for direct sensor interfaces. The industrial -40C to +85C temperature rating supports cabinet-mounted deployments. RTCC allows time-stamping of sensor data without external RTC, while CTMU simplifies capacitive touch or temperature measurement. Designers use the parallel master port (PMP) to drive character LCDs or external parallel ADC expanders. The PPS feature keeps the PCB layout flexible when adding opto-isolated UART paths or analog front-ends in noisy motor-control cabinets.
Recommandé
Low-Cost Graphical HMI Displays
The PIC32MX270F512HT-50I/MR drives small graphical TFT or OLED panels through the parallel master port (PMP) with dual buffers, supporting up to 8-bit parallel interfaces to common controllers like ILI9341 or SSD1963. The 50 MHz core and 64 KB SRAM are sufficient to render menus, gauges, and simple animations at 30+ FPS, while 512 KB Flash holds graphics assets and UI state machines. PPS allows the data and control signals to be remapped to adjacent pins, simplifying PCB routing to the panel connector. For larger displays or higher frame rates, consider PIC32MX with more pins or stepping up to PIC32MZ EF devices.
Recommandé
Connected Home and IoT Appliances
IoT appliances such as smart thermostats, Wi-Fi gateways, and home-automation controllers leverage the PIC32MX270F512HT-50I/MR's USB-OTG, ample Flash for OTA bootloaders, and UART/SPI for external Wi-Fi/BLE modules (e.g., Microchip RNWF02 or ESP32). The on-chip RTCC schedules sleep/wake cycles for sub-mA average power, while CTMU adds touch-button support without extra ICs. The 64-QFN (9x9 mm) keeps the design compact enough for behind-wall outlet form factors. PPS allows pin re-mapping across PCB revisions without re-spinning firmware, accelerating product variants (single-button, dual-button, LED-ring) from the same platform.
Recommandé
Medical Point-of-Care and Wellness Devices
Medical and wellness devices use the PIC32MX270F512HT-50I/MR for its deterministic real-time behavior, USB connectivity for data upload, and analog comparators with CTMU for sensor front-ends (pulse oximetry, glucometer, etc.). The 50 MHz core runs signal-processing routines (filtering, baseline removal, SpO2 algorithm) within 100 ms windows. The 512 KB Flash holds FDA-style firmware validation records and a small secure boot routine, while 64 KB SRAM buffers sensor samples before BLE/Wi-Fi transmission. Note: only design with the industrial-grade 'I' suffix for the -40C to +85C range; medical IEC 60601 compliance must be addressed at the system level, not the MCU alone.
Recommandé
Educational and Hobby Development Boards
The PIC32MX270F512HT-50I/MR is widely used in microcontroller education and hobby projects, including Microchip's PIC32MX270 curiosity and chipKIT-compatible boards. The 50 MHz MIPS core, USB OTG, and abundant peripherals provide a rich teaching platform for embedded C, RTOS concepts, and USB stack internals. The MPLAB Harmony code-configurator and MPLAB X IDE offer free toolchains, making it accessible to students. The 64-QFN package is hand-solderable with hot air but easier to evaluate in TQFP-equipped dev kits. Many community libraries (FreeRTOS port, MicroPython ports, Arduino-ish cores via chipKIT) extend its usefulness beyond the classroom into prototyping.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC32MX270F512HT-50I/MR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC32MX270F512HT-I/MR | PIC32MX270F256HT-50I/MR | PIC32MX250F256HT-I/MR | PIC32MX150F256HT-I/MR |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same |
| Core | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit |
| Maximum CPU Clock | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Program Flash | 512 KB | 512 KB | 256 KB (-50%) | 256 KB (-50%) | 256 KB (-50%) |
| Data SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| USB OTG | Yes (FS USB 2.0 OTG) | Yes | Yes | No | No |
| I2S Modules | 2 | 2 | 2 | 1 | 0 |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Voltage Range | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V |
Principaux différenciateurs
- Maximum Flash density in the PIC32MX270 64-QFN family (vs PIC32MX270F256HT-50I/MR)
- Includes on-chip USB OTG in 64-QFN (vs PIC32MX250F256HT-I/MR)
- Industrial temperature grade and dual I2S in 64-QFN (vs PIC32MX150F256HT-I/MR)
Notes de conception
The PIC32MX270F512HT-50I/MR operates from 2.3V to 3.6V with separate analog (AVDD) and digital (VDD) rails. Place a 10 uF bulk plus 0.1 uF decoupling capacitor on every VDD/AVDD pair, and keep the decoupling loop area under 3 mm square. A ferrite bead between VDD and AVDD reduces switching noise injection into the ADC - this is critical when sampling analog signals concurrently with active USB traffic. USB VUSB pin requires its own 0.1 uF plus a 10 uF capacitor tied to ground per Microchip reference designs.
The 64-QFN (9x9 mm) exposed thermal pad (EPAD) must be soldered to a ground plane with at least 16 thermal vias (0.3 mm drill, 0.6 mm pad) for heat dissipation and ground reference. USB DP/DM traces must be 90-ohm differential, length-matched to within 150 mil, and routed over a continuous ground reference plane. Keep crystal traces (OSC1/OSC2) short - under 10 mm - and surround them with ground stitching vias to minimize EMI pickup.
The USB DP/DM pins are fixed (not remappable via PPS) and have specific impedance requirements - use a 90-ohm differential impedance calculator for your stack-up. The I2S lines routed through PPS should be kept under 50 mm total length to avoid clock-data skew on the audio interface. The Parallel Master Port (PMP) data and address lines share pins with PPS-remappable functions; isolate them on dedicated GPIO banks to simplify timing closure on graphics applications.
Configuration bits (CFG) must be set to enable the primary oscillator, disable the watchdog if not used, and select the correct JTAG/debug mode - leaving defaults can result in code-locked devices on first power-up. When using the on-chip USB transceiver, the VUSB pin must be energized even in self-powered designs; otherwise USB enumeration fails. The PPS mapping registers unlock sequence must be performed exactly as specified in the datasheet (write key, write mapping, write lock) - skipping the lock is a frequent source of mysterious GPIO lockups at runtime.
Informations de conformité
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified; choose 'V' automotive or industrial extended temperature grade variants for harsher environments. Halogen-free per Microchip environmental compliance data.
