PIC32MX270F256D-50I/TL - 50MHz 32-bit MCU 256KB Flash USB | Microchip
Référence : PIC32MX270F256D-50I/TL ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.63 | $4,63 |
| 10 | $4.17 | $41,70 |
| 100 | $3.71 | $371,00 |
| 500 | $3.34 | $1 670,00 |
| 1 000 | $2.99 | $2 990,00 |
PIC32MX270F256D-50I/TL Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals such as timers, ADC, communication controllers, and GPIOs into one package. The PIC32MX270F256D sits within the broader Microchip PIC32 family, which is itself a sub-family of MIPS-based 32-bit microcontrollers targeted at applications requiring higher performance than 8-bit or 16-bit MCUs can deliver while retaining deterministic interrupt response. Compared with discrete processor-plus-memory designs, a 32-bit MCU like this reduces BOM count, simplifies PCB layout, and shortens firmware bring-up because the entire compute subsystem is pre-validated.
Key features include a 10-bit 1 Msps ADC with up to 28 analog channels, two I2S/SPI modules for codec and audio interfaces, Peripheral Pin Select (PPS) for flexible peripheral-to-pin mapping, a Parallel Master Port (PMP) for graphics, a 1 ns resolution Input Capture timer for high-resolution time measurement, and mTouch capacitive touch support. On-chip peripherals also include two I2C, two UART, and five 16-bit timers. The 256 KB Flash supports self-programming and table reads for in-field firmware updates.
Typical applications include USB audio peripherals (headsets, microphones, speakers), Bluetooth audio plug-in modules (PIMs) when paired with an external BT transceiver, low-cost graphics HMIs via PMP, capacitive touch keypads, and industrial sensor hubs. The USB OTG port lets the device serve as either a USB device (e.g., a custom audio interface) or a USB host (e.g., reading a USB flash drive). At 0.5 mA/MHz typical core current, idle power consumption is low enough for battery-powered designs.
When designing with this part, route the two USB DP/DM lines as a 90-ohm differential pair and place the 48 MHz crystal within a few millimeters of the OSC1/OSC2 pins. The PPS feature lets you remap peripherals to alternate pins to simplify PCB routing or avoid conflicts, but the pin function must be unlocked in the CFGCON register before reconfiguration. The 44-VTLA package has an exposed thermal pad that must be soldered to the ground plane for proper thermal and electrical performance.
Alternatives de remplacement direct pour PIC32MX270F256D-50I/TL — 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 PIC32MX270F256D-50I/TL (même facteur de forme et même empreinte) — différant par ADC, Package, Core Architecture, Maximum CPU Frequency, Operating Voltage Range.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC32MX270F256DT-50I/TL
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC32MX270F256D-I/TL
✅ Remplacement direct✓ En stock
$3.5 / unité
Voir la fiche technique →PIC32MX270F256D-50I/ML
✅ Remplacement direct✓ En stock
$3.74 / unité
Voir la fiche technique →PIC32MX274F256D-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC32MX230F256D-50I/PT
✅ Remplacement direct✓ En stock
$4.15 / unité
Voir la fiche technique →PIC32MX270F256D-50I/TL Valeurs maximales et caractéristiques électriques
| Core | MIPS32 M4K |
| Operating Frequency | 50 MHz |
| DMIPS | 83 DMIPS |
| Program Memory (Flash) | 256 KB (256K x 8) |
| RAM | 64 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| Température de fonctionnement | -40C to +85C (Industrial, I grade) |
| Boîtier | 44-VTLA (6x6 mm) with thermal pad |
| Type de montage | Surface Mount |
| I/O Pins | Up to 33 |
| ADC | 10-bit, up to 28 channels, 1 Msps |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Communication Interfaces | I2C x2, SPI/I2S x2, UART x2, PMP, USB OTG |
| Timers | 5 x 16-bit, 1 ns Input Capture resolution |
| Core Current Consumption | 0.5 mA/MHz (typical) |
| Touch Support | mTouch capacitive touch buttons and sliders |
| Niveau MSL | MSL3 (per JEDEC J-STD-020) |
| Statut RoHS | Compliant |
Configuration des broches de PIC32MX270F256D-50I/TL
| Broche 1 | SDA3/RA9 — I2C data / GPIO |
| Broche 2 | RPB0/RB0 — GPIO with PPS |
| Broche 3 | RPB1/RB1 — GPIO with PPS |
| Broche 4 | RPB2/RB2 — GPIO with PPS |
| Broche 5 | RPB3/RB3 — GPIO with PPS |
| Broche 6 | VSS — Ground |
| Broche 7 | VDD — Supply voltage 2.3-3.6V |
| Broche 8 | RPB4/RB4 — GPIO with PPS |
| Broche 9 | RPB5/RB5 — GPIO with PPS |
| Broche 10 | RPB6/RB6 — GPIO with PPS |
| Broche 11 | RPB7/RB7 — GPIO with PPS |
| Broche 12 | RPC0/RC0 — GPIO with PPS |
| Broche 13 | RPC1/RC1 — GPIO with PPS |
| Broche 14 | RPC2/RC2 — GPIO with PPS |
| Broche 15 | RPC3/RC3 — GPIO with PPS |
| Broche 16 | RPC4/RC4 — GPIO with PPS |
| Broche 17 | RPC5/RC5 — GPIO with PPS |
| Broche 18 | RPC6/RC6 — GPIO with PPS |
| Broche 19 | RPC8/DA7 — GPIO with PPS |
| Broche 20 | RPC9/DA8 — GPIO with PPS |
| Broche 21 | RPC10/DA9 — GPIO with PPS |
| Broche 22 | VSS — Ground |
| Broche 23 | VDD — Supply voltage 2.3-3.6V |
| Broche 24 | OSC1/CLKI/RC12 — Crystal input / external clock |
| Broche 25 | OSC2/CLKO/RC13 — Crystal output |
| Broche 26 | SOSCI/RF10 — Secondary oscillator in |
| Broche 27 | SOSCO/RF11 — Secondary oscillator out |
| Broche 28 | D-/RC14 — USB data minus (OTG) |
| Broche 29 | D+/RC15 — USB data plus (OTG) |
| Broche 30 | VBUS — USB bus voltage detect |
| Broche 31 | RPD0/RC16 — GPIO with PPS |
| Broche 32 | RPD1/RC17 — GPIO with PPS |
| Broche 33 | RPD2/RC18 — GPIO with PPS |
| Broche 34 | RPD3/RC19 — GPIO with PPS |
| Broche 35 | RPD4/RC20 — GPIO with PPS |
| Broche 36 | RPD5/RC21 — GPIO with PPS |
| Broche 37 | RPD6/RC22 — GPIO with PPS |
| Broche 38 | RPD7/RC23 — GPIO with PPS |
| Broche 39 | RPG0/RP8/RC24 — GPIO with PPS |
| Broche 40 | RPG1/RP9/RC25 — GPIO with PPS |
| Broche 41 | RPG6/RP2/RC26 — GPIO with PPS |
| Broche 42 | PGED2 — Programming data (ICD) |
| Broche 43 | PGEC2 — Programming clock (ICD) |
| Broche 44 | MCLR — Reset, active-low |
Applications typiques
PIC32MX270F256D-50I/TL convient pour 7 applications: USB Audio Peripheral, Bluetooth Audio PIM, Capacitive Touch HMI Keypad, Low-Cost Graphics HMI, Industrial Sensor Hub with USB, USB Host Data Logger, Audio Streaming Over USB with PMP.
USB Audio Peripheral
The PIC32MX270F256D-50I/TL integrates USB 2.0 full-speed OTG and dual I2S/SPI ports, making it a natural fit for USB audio peripherals such as USB headsets, USB microphones, USB DAC/ADC interfaces, and USB audio class-compliant speakers. The 50 MHz / 83 DMIPS throughput is sufficient to handle real-time audio streaming at 48 kHz / 24-bit while leaving CPU headroom for DSP, mixing, or codec control. The 64 KB RAM comfortably buffers audio frames. In a typical design, the MCU enumerates as a USB audio device class and uses I2S to drive an external codec such as the Microchip LAN89730; firmware runs at the maximum 50 MHz to keep audio I/O latency low. The 44-VTLA package also fits inside compact USB dongle enclosures.
Recommandé
Bluetooth Audio PIM
When paired with an external Bluetooth transceiver such as the BM62 or BC127, the PIC32MX270F256D-50I/TL forms the audio-processing backbone of a Bluetooth audio PIM, speaker, or headphone module. The on-chip I2S ports connect directly to the BT module's PCM interface, and the 50 MHz CPU handles SBC or aptX decoding plus local audio mixing. The PPS feature simplifies routing the I2S, UART (for BT module command channel), and GPIO for button / battery sense into a single BGA-free, low-BOM-count board. With 256 KB Flash, the MCU can also store local equalizer presets, voice prompts, or BLE firmware update logic. The 44-VTLA 6x6 mm footprint is well-suited to slim headphone and PIM carrier boards.
Recommandé
Capacitive Touch HMI Keypad
The PIC32MX270F256D-50I/TL's mTouch capacitive touch peripheral and 33 GPIO let it replace dedicated touch ICs in consumer and industrial keypads. Up to 28 ADC channels handle simultaneous touch button scanning with a noise-robust averaging algorithm, and the 50 MHz CPU resolves 1 ns-resolution Input Capture for accurate touch-press timing. In practice, designers implement 16-24 touch keys plus a slider on a single MCU with no external touch IC, reducing BOM cost. The 64 KB RAM is ample for filtering / debouncing state, and 256 KB Flash fits full USB CDC/HID stacks plus touch libraries. The 44-VTLA package lets the MCU sit behind the touch sensor PCB layer.
Recommandé
Low-Cost Graphics HMI
The PIC32MX270F256D-50I/TL's Parallel Master Port (PMP) interfaces directly to graphical OLEDs, TFTs, and small LCDs without an external display controller. The PMP can drive 8-bit or 16-bit parallel displays at full speed, while the 50 MHz core handles menu rendering, sprite drawing, and touch input at 60 fps for sub-3-inch panels. With 64 KB RAM and 256 KB Flash, the MCU holds full-frame display buffers, multi-language strings, and bitmap assets. Designers use this combination in HVAC thermostats, appliance control panels, and small industrial gauges. The 44-VTLA package saves PCB area compared to 64-pin TQFP alternatives in compact enclosures.
Recommandé
Industrial Sensor Hub with USB
The PIC32MX270F256D-50I/TL combines a 10-bit 1 Msps ADC, USB OTG, and 50 MHz CPU to serve as a USB-attached industrial sensor hub. With up to 28 ADC channels, the MCU samples multiple analog sensors simultaneously and streams the data over USB to a host PC. The USB device class can be HID, CDC, or custom bulk, depending on latency and bandwidth needs. The 256 KB Flash allows for on-board calibration coefficients and logging libraries, while 64 KB RAM is enough to smooth out bursty sample traffic. Industrial temperature spec -40C to +85C and 3.6 V max supply are well-suited to factory automation environments.
Recommandé
USB Host Data Logger
The PIC32MX270F256D-50I/TL's USB host mode allows it to read external USB mass-storage devices and act as a standalone data logger. The 50 MHz core manages the FAT32 file system, writes sensor samples to a USB flash drive, and the 256 KB Flash holds the bootloader plus optional logging firmware. USB host mode requires an external 5 V boost regulator to power the USB device, which the MCU's I/O can switch. In field instrumentation, this configuration lets the device operate without a host PC. The 44-VTLA package with 33 GPIO gives space for SD card, USB connector, and multiple UART sensors.
Recommandé
Audio Streaming Over USB with PMP
The PIC32MX270F256D-50I/TL is a good match for audio streaming bridges that combine USB device input with PMP-driven display output. For example, a karaoke microphone that streams audio over USB while showing a lyric display on a small OLED. The on-chip USB OTG handles the host interface, the I2S port talks to the audio CODEC, and PMP drives the display. The 50 MHz CPU can decode compressed audio, render scrolling text, and respond to HID input simultaneously within the 83 DMIPS budget. The 256 KB Flash holds compressed lyric assets. The 44-VTLA package keeps the device physically compact.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC32MX270F256D-50I/TL — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC32MX270F256DT-50I/TL | PIC32MX270F256D-I/TL | PIC32MX270F256D-50I/ML | PIC32MX274F256D-I/PT | PIC32MX230F256D-50I/PT |
|---|---|---|---|---|---|---|
| Package | 44-VTLA (6x6 mm) | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same | 44-QFN - same pin count, different style | 44-TQFP - same pin count, different style | 64-TQFP - more pins |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Clock (Max) | 50 MHz | 50 MHz | 40 MHz | 50 MHz | 72 MHz (family) | 50 MHz |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| RAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| USB OTG | Yes (FS) | Yes (FS) | Yes (FS) | Yes (FS) | Yes (FS) | Yes (FS) |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Principaux différenciateurs
- USB 2.0 full-speed OTG integrated without external PHY (vs PIC32MX1XX/2XX non-D family)
- Dual I2S ports for audio codec interfaces (vs PIC32MX1XX/2XX base family)
- Peripheral Pin Select (PPS) on most GPIO (vs Fixed-pin PIC microcontrollers)
Notes de conception
Route the USB DP/DM lines as a 90-ohm differential pair with no stubs and matched length within 150 mil. Place the 48 MHz crystal within 5 mm of the OSC1/OSC2 pins and surround the traces with a ground guard ring to minimize EMI coupling. The 44-VTLA package has an exposed thermal pad that must be soldered to a continuous ground plane via multiple thermal vias for both electrical grounding and thermal dissipation.
When using Peripheral Pin Select (PPS), remember that the I/O must first be unlocked in the CFGCON register before reconfiguration, and you must assign both input and output PPS separately. The Input Capture timer resolution of 1 ns only holds when the timer is sourced from the peripheral clock at 50 MHz, so avoid clock dividers when maximum resolution is required. The USB host mode requires an external 5V boost regulator because the MCU's VDD is 3.3V max.
At 0.5 mA/MHz typical core current and 50 MHz operation, the core consumes approximately 25 mA from a 3.3V supply, yielding ~83 mW core power dissipation. The 44-VTLA exposed thermal pad provides a low-thermal-resistance path; estimate the junction temperature rise using theta_JA from datasheet DS60001168L to confirm headroom under industrial -40C to +85C conditions.
Informations de conformité
RoHS-compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified - not intended for automotive safety-critical applications.
