PIC32MX270F256DT-V/TL - 40MHz 32-bit MCU, 256KB Flash | Microchip
MPN: PIC32MX270F256DT-V/TL ✓ فعالPIC32MX270F256DT-V/TL نمای کلی
A PIC32MX is a 32-bit RISC microcontroller from Microchip's PIC32 family, which sits between 16-bit PIC24/dsPIC and 32-bit ARM Cortex-M parts in the broader microcontroller taxonomy (MCU -> 32-bit MCU -> RISC MCU -> MIPS-based MCU). The MX2 sub-family is optimized for USB connectivity, audio playback, and graphics bridging, making it a popular drop-in upgrade for designers leaving the PIC24F or PIC18F platforms while staying on Microchip's MPLAB X toolchain. The V-temp grade extends the operating range to -40C to +105C for industrial and automotive use.
Key features include 0.5 mA/MHz active current, four DMA channels with automatic data-size detection, two UART, two I2C, two SPI/I2S, Parallel Master Port (PMP) for graphics, an on-chip 1 ns resolution timer, mTouch capacitive-touch hardware, and CTMU for time measurement. Hardware crypto is not present; USB is full-speed only (12 Mbps, not high-speed 480 Mbps). The 44-pin VTLA package supports the V-grade temperature range of -40C to +105C and is AEC-Q100 qualified per Microchip's product page.
The architecture is a single-core MIPS32 M4K 32-bit RISC core with separate PLLs for the system clock and the 48 MHz USB clock, allowing the CPU and USB to run at independent rates without drift. PPS allows remapping of digital peripheral functions to most I/O pins, simplifying PCB layout and enabling late-stage pinout changes without redesign. A configurable watchdog and on-chip low-power RC oscillator provide system-level reliability when the main crystal fails.
Typical applications include USB audio docks, USB HID human-interface devices, low-cost graphics bridges to TFT panels, industrial control with capacitive touch keys, and AEC-Q100 automotive body and HMI modules. The 44-pin VTLA exposed-pad package supports reflow profiles compatible with lead-free assembly and offers improved thermal dissipation for industrial environments.
When designing with this part, pay attention to the VTLA exposed-pad PCB layout - the EP must be soldered to a sufficiently large copper pour for thermal relief, otherwise junction temperature can exceed limits at high CPU loads. MPLAB X IDE with XC32 compiler is the supported toolchain; Harmony 3 framework provides ready-made USB stacks.
This page synthesizes distributor pricing, same-brand drop-in alternatives (the I-temperature and 50 MHz variants in the same VTLA-44 footprint), and practical design notes not found in the manufacturer datasheet.
جایگزین‌های drop-in برای PIC32MX270F256DT-V/TL — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC32MX270F256DT-V/TL (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, ADC, Maximum CPU Frequency, Operating Temperature Range, Parallel Master Port (PMP).
PIC32MX270F256D-I/TL
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX270F256DT-50V/TL
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC32MX270F256DT-V/ML
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX270F256D-I/ML
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX270F256DT-V/TL حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Core Count | Single-core |
| Maximum CPU Frequency | 40 MHz (V-temp grade) |
| Performance | 83 DMIPS |
| Program Memory (Flash) | 256 KB (256K x 8) |
| SRAM | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Active Current | 0.5 mA/MHz (typical) |
| ADC | 10-bit, up to 1 Msps, up to 28 channels |
| USB | USB 2.0 full-speed device/host/OTG |
| DMA Channels | 4 with automatic data size detection |
| UART | 2 |
| I2C | 2 |
| SPI / I2S | 2 |
| Parallel Master Port (PMP) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| mTouch Capacitive Touch | Yes |
| CTMU | Yes |
| Watchdog Timer | Configurable WDT with on-chip low-power RC oscillator |
| Timers | 5 x 16-bit or 2 x 32-bit |
| دمای کاری | -40C to +105C (V grade) |
| بسته‌بندی | 44-pin VTLA (6x6 mm) with exposed pad |
| AEC-Q100 Qualification | Qualified |
| وضعیت RoHS | Compliant |
پیکربندی پین PIC32MX270F256DT-V/TL
| پین 1 | RB0/AN0 — I/O with analog input AN0, PPS-remappable |
| پین 2 | RB1/AN1 — I/O with analog input AN1, PPS-remappable |
| پین 3 | RB2/AN2 — I/O with analog input AN2, PPS-remappable |
| پین 4 | RB3/AN3 — I/O with analog input AN3, PPS-remappable |
| پین 5 | RB4/AN4 — I/O with analog input AN4, PPS-remappable |
| پین 6 | RB5/AN5 — I/O with analog input AN5, PPS-remappable |
| پین 7 | RB6/AN6/PGEC1 — I/O with AN6, programming clock |
| پین 8 | RB7/AN7/PGED1 — I/O with AN7, programming data |
| پین 9 | VSS — Ground |
| پین 10 | VDD — Supply voltage (2.3V-3.6V) |
| پین 11 | RB8/AN8 — I/O with analog input AN8, PPS-remappable |
| پین 12 | RB9/AN9 — I/O with analog input AN9, PPS-remappable |
| پین 13 | RB10/AN10/CVREF — I/O with AN10 and CVREF output |
| پین 14 | RB11/AN11 — I/O with analog input AN11 |
| پین 15 | RB12/AN12 — I/O with analog input AN12 |
| پین 16 | RB13/AN13 — I/O with analog input AN13 |
| پین 17 | RB14/AN14 — I/O with analog input AN14 |
| پین 18 | RB15/AN15 — I/O with analog input AN15 |
| پین 19 | VSS — Ground |
| پین 20 | VDD — Supply voltage (2.3V-3.6V) |
| پین 21 | RC1/AN21 — I/O with analog input AN21, PPS-remappable |
| پین 22 | RC2/AN22 — I/O with analog input AN22, PPS-remappable |
| پین 23 | RC3/AN23 — I/O with analog input AN23, PPS-remappable |
| پین 24 | RC4/AN24 — I/O with analog input AN24, PPS-remappable |
| پین 25 | RD0/PMD0 — I/O with PMP data bit 0 |
| پین 26 | RD1/PMD1 — I/O with PMP data bit 1 |
| پین 27 | RD2/PMD2 — I/O with PMP data bit 2 |
| پین 28 | RD3/PMD3 — I/O with PMP data bit 3 |
| پین 29 | RD4/PMD4 — I/O with PMP data bit 4 |
| پین 30 | RD5/PMD5 — I/O with PMP data bit 5 |
| پین 31 | RD6/PMD6 — I/O with PMP data bit 6 |
| پین 32 | RD7/PMD7 — I/O with PMP data bit 7 |
| پین 33 | RC5/AN25 — I/O with analog input AN25, PPS-remappable |
| پین 34 | RC6/AN26 — I/O with analog input AN26, PPS-remappable |
| پین 35 | RC7/AN27 — I/O with analog input AN27, PPS-remappable |
| پین 36 | RC8/AN28 — I/O with analog input AN28 |
| پین 37 | RC9 — I/O, PPS-remappable |
| پین 38 | D+ — USB data plus |
| پین 39 | D- — USB data minus |
| پین 40 | VDD — Supply voltage (2.3V-3.6V) |
| پین 41 | VSS — Ground |
| پین 42 | RA0 — I/O, PPS-remappable |
| پین 43 | RA1 — I/O, PPS-remappable |
| پین 44 | RA2 — I/O, PPS-remappable |
کاربردهای معمول
PIC32MX270F256DT-V/TL مناسب است برای 7 کاربردs: USB Audio Dock / USB Speaker, USB HID Human Interface Device (Keyboard / Mouse / Gamepad), TFT Graphics Bridge / Low-Cost HMI Panel, Industrial Control with Capacitive Touch Keys, Automotive Body Electronics / HMI Module, USB Barcode / Magnetic Stripe Reader, USB Data Logger / Sensor Hub.
USB Audio Dock / USB Speaker
The PIC32MX270F256DT-V/TL is ideally suited to USB audio docks where it acts as a USB device enumerating as a USB Audio Class 1.0 speaker, then routing digital audio via I2S to an external DAC. Its 256 KB Flash comfortably holds the USB stack plus application logic, while the two I2S modules support both DAC and ADC paths for headset designs. The integrated USB 2.0 full-speed OTG controller eliminates the need for an external PHY, reducing BOM cost. Engineers typically use the Microchip Harmony 3 USB Audio Driver template, which provides ready-made HID/Volume control descriptors, sample rate handling for 48 kHz/96 kHz, and feedback endpoint support.
پیشنهادی
USB HID Human Interface Device (Keyboard / Mouse / Gamepad)
With USB 2.0 full-speed OTG and PPS-remappable I/O, the PIC32MX270F256DT-V/TL excels in USB HID peripherals including gaming controllers, programmable keypads, and industrial pendants. The 256 KB Flash holds HID report descriptors, debounce logic, and macro scripting, while 64 KB SRAM buffers HID reports before USB transmits. The 10-bit ADC with up to 28 channels can sample analog triggers and joysticks, and mTouch capacitive touch sensing enables touchpads without external controllers. The part supports USB suspend/resume for battery-friendly operation, drawing under 0.5 mA/MHz active.
پیشنهادی
TFT Graphics Bridge / Low-Cost HMI Panel
The Parallel Master Port (PMP) and Peripheral Pin Select of the PIC32MX270F256DT-V/TL make it a strong fit for low-cost HMI panels that drive small TFT displays (320x240 up to 480x272) from a host processor. The CPU fetches frame data via SPI/UART and pumps pixels through PMP into the TFT controller, offloading graphics work from the main application processor. With 40 MHz MIPS performance and 64 KB SRAM, it handles mid-rate GUI updates including menus, gauges, and animated icons. Combined with mTouch for buttons, it forms a complete single-chip HMI front-end with USB for firmware updates.
پیشنهادی
Industrial Control with Capacitive Touch Keys
Industrial control panels and operator interfaces benefit from the PIC32MX270F256DT-V/TL's mTouch capacitive touch sensing combined with CTMU for accurate time measurement. The V-temp grade (-40C to +105C) and AEC-Q100 qualification suit factory-floor enclosures, while USB allows configuration uploads and firmware updates without opening the cabinet. The 10-bit ADC at 1 Msps monitors analog sensors (temperature, pressure, current), and the multiple UART/I2C channels connect to motor drivers or PLC I/O modules. The 256 KB Flash accommodates IEC 61131-3-style logic blocks plus safety checks.
پیشنهادی
Automotive Body Electronics / HMI Module
AEC-Q100 qualified and rated -40C to +105C, the PIC32MX270F256DT-V/TL is well suited to automotive body and HMI modules such as HVAC control panels, steering-wheel switches, and USB charging ports. USB 2.0 device mode enables media playback from USB sticks, while I2C drives segmented LCDs or LED matrices for backlit buttons. The PMP peripheral drives small color TFTs for premium HVAC interfaces, and CAN connectivity is achievable via SPI-to-CAN bridges such as MCP2515. The 0.5 mA/MHz active current keeps quiescent drain low for always-on battery-powered modules.
پیشنهادی
USB Barcode / Magnetic Stripe Reader
USB HID-POS barcode scanners and magnetic stripe readers benefit from the PIC32MX270F256DT-V/TL's integrated USB full-speed controller and ample 256 KB Flash for protocol stacks. The 40 MHz MIPS core parses decoded symbologies (Code 128, QR, DataMatrix) at rates exceeding 100 scans per second, while UART interfaces to external imager modules. CTMU provides accurate timing for debounce and signal integrity checks on noisy barcode waveforms. The V-temp grade and AEC-Q100 rating also suit outdoor kiosks and warehouse scanners operating in uncontrolled environments.
پیشنهادی
USB Data Logger / Sensor Hub
Portable USB data loggers and sensor hubs leverage the PIC32MX270F256DT-V/TL's USB device mode for direct PC connectivity, plus I2C/SPI to attach external sensors (temperature, humidity, accelerometers). The 64 KB SRAM buffers logged data between USB reads, and the 10-bit ADC at 1 Msps captures fast analog transients. Microchip's Harmony 3 USB MSD (mass storage) library turns the part into a plug-and-play FAT32 logger that appears as a removable drive on the host PC. Low-power sleep modes extend battery life in field deployments.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC32MX270F256DT-V/TL — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC32MX270F256D-I/TL | PIC32MX270F256DT-50V/TL | PIC32MX270F256DT-V/ML |
|---|---|---|---|---|
| Package | 44-VTLA (6x6 mm) | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same | 44-QFN (8x8 mm) - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Frequency (max) | 40 MHz | 40 MHz | 50 MHz | 40 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB |
| Temperature Grade | V-temp: -40C to +105C | I-temp: -40C to +85C | V-temp: -40C to +105C | V-temp: -40C to +105C |
| AEC-Q100 Qualified | Yes | No | Yes | Yes |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG |
تفاوت‌های کلیدی
- AEC-Q100 qualification with -40C to +105C V-temp grade (در مقابلPIC32MX270F256D-I/TL)
- USB 2.0 Full-Speed OTG with dedicated 48 MHz PLL (در مقابلPIC32MX270F256DT-50V/TL)
- Compact 6x6 mm VTLA footprint with PPS flexibility (در مقابلPIC32MX270F256DT-V/ML)
یادداشت‌های طراحی
The 44-pin VTLA package has an exposed thermal pad that MUST be soldered to a ground copper pour for proper heat dissipation. At maximum CPU load (40 MHz, all peripherals active), estimated internal dissipation reaches approximately 60 mW (0.5 mA/MHz x 3.3V x 40 MHz). Use at least 100 mm^2 of 1 oz copper on top layer connected to the exposed pad; without this, junction temperature can exceed the 105C V-temp limit in enclosed industrial enclosures.
Place a 0.1 uF ceramic decoupling capacitor as close as possible to each VDD pin (pins 10, 20, 40), plus a single 10 uF bulk capacitor near the package. Place the USB D+/D- traces as a 90-ohm differential pair with length matching within 2 mm. Add a 45-ohm series resistor on each USB data line close to the IC pins to suppress reflections and meet USB 2.0 full-speed signal integrity requirements.
Do not enable both USB and the JTAG debugger at the same time without configuring PGEC1/PGED1 properly - the debugger pins are shared with RB6/RB7. Configure PPS before enabling peripherals: peripheral inputs/outputs are routed via the PPS registers and will not function until configured. Ensure the VDD ramp time is between 0.2 ms and 200 ms - faster or slower ramps can cause Power-On Reset failures. Program the CONFIG bits (DEVCFG0/1/2/3) before enabling peripherals to avoid inadvertent JTAG lockout.
Route the 48 MHz USB PLL reference clock trace away from the analog ADC inputs (AN0-AN28) to minimize coupled noise. Keep the 8 MHz primary oscillator traces short and surrounded by a ground guard ring. For PMP interfaces to TFT panels, group the 8-bit PMP data bus (RD0-RD7) together with matched trace lengths (within 25 mm) to avoid skew at higher pixel clock rates. Leave space for a ferrite bead between analog VDD and digital VDD if designing a mixed-signal board.
اطلاعات انطباق
AEC-Q100 qualified per Microchip product page. V-temp grade -40C to +105C. RoHS/REACH compliant. Lead-free and halogen-free per Microchip material declarations.
