PIC32MX270F256B-V/SS - 50MHz 32-bit MCU 256KB Flash USB SSOP-28
Teilenummer: PIC32MX270F256B-V/SS ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $6.45 | $6,45 |
| 10 | $5.82 | $58,20 |
| 100 | $5.18 | $518,00 |
| 500 | $4.62 | $2.310,00 |
| 1.000 | $4.1 | $4.100,00 |
PIC32MX270F256B-V/SS Übersicht
A 32-bit microcontroller (MCU) is a single-chip computer that integrates a 32-bit CPU core, Flash program memory, SRAM data memory, and a rich set of peripherals (ADC, timers, communication controllers, GPIO) into one IC. In the broader taxonomy, the PIC32MX270F256B-V/SS belongs to the microcontroller category, which itself sits under microcontrollers -> embedded processors -> integrated circuits -> semiconductors. The PIC32MX1XX/2XX family specifically targets cost-sensitive applications that still require USB connectivity, larger memory, and DSP-class throughput, distinguishing it from 8-bit PIC16/PIC18 families and from higher-end PIC32MZ parts.
Key features include 0.5 mA/MHz typical run current, a 1.0 mA typical IDLE current, Peripheral Pin Select (PPS) for flexible signal routing, Parallel Master Port (PMP) for graphics interfaces, CTMU for mTouch capacitive touch and high-resolution 1 ns time measurement, an on-chip temperature sensor, and an integrated USB 2.0 full-speed transceiver. The -V suffix indicates a -40C to +105C industrial operating range, and the SSOP-28 (5.30 mm body) provides a smaller footprint than SOIC-28 while remaining hand-solderable. The combination of 83 DMIPS and 1.5 MB total addressable memory makes it suitable for USB audio, USB HID, and modest graphics stacks.
The architecture combines a Harvard-style MIPS M4K core with a multi-channel DMA controller, a 5-stage pipeline, hardware multiply/divide, and a single-cycle 32-bit ALU. The USB OTG controller with on-chip transceiver eliminates external PHY components for full-speed USB 2.0 designs. PPS remaps digital peripheral I/O to a wide range of physical pins, simplifying PCB layout when multiple peripheral functions compete for limited pins.
Typical applications include USB audio interfaces, USB HID/CDC devices, low-cost graphics HMI with PMP-driven LCDs, capacitive touch key/slider panels, industrial control with USB diagnostics, and educational development boards. The wide industrial temperature range extends usability to outdoor enclosures and factory-floor equipment.
When designing in, plan for two decoupling capacitors per VDD/AVDD pair, a 12 MHz or 24 MHz primary crystal with proper load capacitors, and a dedicated 3.3 V rail with adequate headroom. PPS mapping must be assigned in firmware before peripheral use, and the USB D+/D- traces should be length-matched and routed away from switching nodes to pass USB compliance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in-Alternativen für PIC32MX270F256B-V/SS – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC32MX270F256B-V/SS (gleiche Bauform und Footprint) – abweichend in Package, ADC, Operating Temperature, Core Architecture, Timers.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC32MX270F256BT-V/SS
✅ Drop-In✓ Auf Lager
$2.61 / Stück
Datenblatt ansehen →PIC32MX270F256BT-I/SS
✅ Drop-In✓ Auf Lager
$3.89 / Stück
Datenblatt ansehen →PIC32MX270F256B-I/SS
✅ Drop-In✓ Auf Lager
$3.4 / Stück
Datenblatt ansehen →PIC32MX230F256B-V/SS
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
PIC32MX150F128B-V/SS
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.94 / Stück
Datenblatt ansehen →PIC32MX270F256B-V/SS Grenzwerte & elektrische Eigenschaften
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 50 MHz (83 DMIPS) |
| Program Flash | 256 KB |
| Data SRAM | 64 KB |
| USB Controller | USB 2.0 Full-Speed Device/Host/OTG with on-chip transceiver |
| ADC | 10-bit, up to 1 Msps, 13 channels |
| I2S/SPI Modules | 2 |
| PMP (Parallel Master Port) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| CTMU (Charge Time Measurement Unit) | Yes - supports mTouch capacitive touch and 1 ns time measurement |
| On-chip Temperature Sensor | Yes |
| Operating Voltage | 2.3 V to 3.6 V |
| Typical Run Current | 0.5 mA/MHz |
| Operating Temperature (V suffix) | -40C to +105C |
| Gehäuse | SSOP-28 (5.30 mm body width) |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
| Lead-Free | Yes |
| MSL-Level | 1 |
| Programming/Debug | ICSP via PGECx/PGEDx pairs, MPLAB Snap / PICkit 3 / ICD 3 compatible |
PIC32MX270F256B-V/SS Pin-Konfiguration
| Pin 1 | RA0 — GPIO / analog input AN0 |
| Pin 2 | RA1 — GPIO / analog input AN1 |
| Pin 3 | RA2 — GPIO / analog input AN2 |
| Pin 4 | RA3 — GPIO / analog input AN3 |
| Pin 5 | RA4 — GPIO / analog input AN4 |
| Pin 6 | AVDD — Analog supply voltage |
| Pin 7 | AVSS — Analog ground reference |
| Pin 8 | VDD — Digital supply voltage |
| Pin 9 | RA7 — GPIO |
| Pin 10 | RB0 — GPIO / PGED1 (programming data) |
| Pin 11 | RB1 — GPIO / PGEC1 (programming clock) |
| Pin 12 | RB2 — GPIO |
| Pin 13 | RB3 — GPIO |
| Pin 14 | VSS — Digital ground |
| Pin 15 | RB4 — GPIO |
| Pin 16 | RB5 — GPIO |
| Pin 17 | RB6 — GPIO |
| Pin 18 | RB7 — GPIO |
| Pin 19 | RB8 — GPIO |
| Pin 20 | RB9 — GPIO |
| Pin 21 | RB10 — GPIO |
| Pin 22 | RB11 — GPIO |
| Pin 23 | RB12 — GPIO |
| Pin 24 | RB13 — GPIO / USB D+ |
| Pin 25 | RB14 — GPIO / USB D- |
| Pin 26 | RB15 — GPIO |
| Pin 27 | RA8 — GPIO / analog input AN8 |
| Pin 28 | RA9 — GPIO / analog input AN9 |
Typische Anwendungen
PIC32MX270F256B-V/SS ist geeignet für 7 Anwendungs: USB Audio DAC / USB Headphone Interface, USB HID / CDC Human Interface Devices, Graphics HMI with PMP-Driven LCD, Industrial Control with USB Diagnostics, Capacitive Touch Key and Slider Panel, Educational Development Boards and Hobby Projects, USB Mass Storage / Data Logger.
USB Audio DAC / USB Headphone Interface
The PIC32MX270F256B-V/SS is purpose-built for USB audio DAC and USB headphone designs because it integrates a USB 2.0 full-speed OTG controller with on-chip transceiver alongside two I2S interfaces that connect directly to a stereo DAC or codec such as the Texas Instruments PCM5102A. The 50 MHz MIPS M4K core delivers 83 DMIPS, plenty of headroom for sample-rate conversion and basic DSP, while the 64 KB SRAM accommodates double-buffered 16-bit / 48 kHz stereo streams with low latency. Microchip's MLA USB Audio 1.0 class driver handles enumeration, sample-rate negotiation, and asynchronous feedback over an isochronous endpoint. The -V -40C to +105C industrial temperature range supports automotive and outdoor audio products. For designs above 48 kHz sample rates a PIC32MX4XX or PIC32MZ part is recommended.
Empfohlen
USB HID / CDC Human Interface Devices
The PIC32MX270F256B-V/SS serves as a USB HID or USB CDC controller in keyboards, mice, custom joysticks, and USB-to-UART bridge designs where its integrated USB 2.0 full-speed transceiver eliminates external PHY components. The Peripheral Pin Select (PPS) function lets designers map the HID endpoint signals to any GPIO, simplifying PCB layout when scan matrices or button arrays compete for pins. The 256 KB Flash accommodates USB descriptors plus HID report parsing logic, and the 64 KB SRAM is more than adequate for HID ring buffers and CDC line-discipline state machines. Microchip's MLA HID and CDC class drivers are production-ready and royalty-free. The -V industrial temperature range supports field-ruggedized input devices used in industrial automation and outdoor kiosks.
Empfohlen
Graphics HMI with PMP-Driven LCD
The PIC32MX270F256B-V/SS drives small parallel LCD panels through its integrated Parallel Master Port (PMP), supporting 8-bit or 16-bit data buses, programmable timing, and DMA-driven frame transfers. The 50 MHz MIPS M4K core delivers 83 DMIPS that is sufficient for menu rendering, animated icons, and touch-driven UI on 320x240 QVGA panels. The 256 KB Flash stores a lightweight graphics library, fonts, and UI state, while the 64 KB SRAM provides a single 320x240 16-bit color framebuffer of 153 KB (use double-buffering partially or external memory for full buffers). The PMP peripheral auto-increments address and supports 8080/6800-style protocols, enabling direct connection to common LCD controller ICs. Designers can also pair the PMP bus with the CTMU to add capacitive touch keys and sliders on the same panel.
Empfohlen
Industrial Control with USB Diagnostics
The PIC32MX270F256B-V/SS suits industrial controllers that need a USB diagnostics port for firmware update, log retrieval, or field configuration, leveraging the integrated USB 2.0 full-speed controller and 50 MHz MIPS M4K core. The -V -40C to +105C industrial temperature range and 256 KB Flash enable real-time control loops, Modbus or CANopen stacks, and field-updatable bootloaders stored in a separate bootloader Flash region. The CTMU peripheral implements precise 1 ns time measurement, useful for pulse counting on flow meters and encoders. The 13-channel 10-bit 1 Msps ADC reads multiple sensor inputs simultaneously with DMA offloading the CPU. On-chip temperature monitoring adds a system-health telemetry channel that USB diagnostics can stream to a host PC.
Empfohlen
Capacitive Touch Key and Slider Panel
The PIC32MX270F256B-V/SS is well-suited to mTouch capacitive touch key and slider panels because of its on-chip CTMU peripheral that delivers sub-nanosecond time measurement resolution, enabling reliable detection of capacitance changes as small as femtofarads. The peripheral supports both self- and mutual-capacitance sensing, allowing PCB-track sensors without external ICs. Designers can drive 4-20 touch channels using a combination of ADC inputs and digital I/O, with firmware running at 50 MHz on the MIPS M4K core executing the relaxed scan and median-filter algorithms. The integrated USB controller streams touch events to a host PC for configuration and visualization. Industrial temperature grade and PPS flexibility make it ideal for appliance and automotive cabin touch panels.
Empfohlen
Educational Development Boards and Hobby Projects
The PIC32MX270F256B-V/SS is a popular choice in university curricula and hobbyist projects because the 28-pin SSOP package is hand-solderable, the device is supported by free MPLAB X IDE and MPLAB Harmony 3 framework, and the integrated USB controller allows quick PC-interface projects without external PHYs. Students get a 50 MHz / 83 DMIPS MIPS M4K core with 256 KB Flash and 64 KB SRAM, more than enough for embedded operating systems like FreeRTOS, USB device stacks, and modest DSP experiments. Microchip's Curiosity Development Board and chipKIT MAX32 platforms use this part family, lowering the hardware barrier. The 10-bit ADC, multiple timers, and PPS flexibility support a wide variety of sensor and actuator labs without external ICs.
Empfohlen
USB Mass Storage / Data Logger
The PIC32MX270F256B-V/SS forms the controller core of USB mass-storage data loggers and removable-media bridges thanks to its integrated USB 2.0 full-speed controller, 256 KB Flash for the firmware and FAT file-system stack, and 64 KB SRAM for sector buffers. PMP or SPI peripherals connect to SD card slots or external Flash, while the 10-bit ADC samples environmental sensors at up to 1 Msps with DMA offload. Microchip's MLA MSD class driver handles SCSI and Bulk-Only Transport enumeration on Windows, macOS, and Linux hosts without custom drivers. Industrial -40C to +105C operation allows battery-powered outdoor loggers in weather stations and cold-chain monitoring. CTMU enables precise RTC timestamping when paired with an external crystal.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC32MX270F256B-V/SS – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC32MX270F256BT-V/SS | PIC32MX270F256BT-I/SS | PIC32MX270F256B-I/SS | PIC32MX230F256B-V/SS | PIC32MX150F128B-V/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-28 | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same |
| Core / Architecture | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit |
| Max CPU Clock | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Program Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB (-50%) |
| Data SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 16 KB (-75%) | 32 KB (-50%) |
| USB Controller | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | None |
| Operating Temperature | -40C to +105C (V) | -40C to +105C | -40C to +85C (I) | -40C to +85C (I) | -40C to +105C | -40C to +105C |
| Unit Price (1 pc, as of 2026-10-02) | $6.45 | $6.45 (similar) | $6.10 (similar) | $6.10 (similar) | $5.40 (lower) | $4.20 (lower) |
Wichtigste Unterscheidungsmerkmale
- Industrial -V temperature range of -40C to +105C versus -I variant -40C to +85C (vs. PIC32MX270F256B-I/SS)
- Three times more SRAM than PIC32MX230F256B family (vs. PIC32MX230F256B-V/SS)
- Integrated USB 2.0 full-speed OTG versus no USB on PIC32MX150F128B (vs. PIC32MX150F128B-V/SS)
- Tube packaging versus tape-and-reel for production assembly (vs. PIC32MX270F256BT-V/SS)
Designhinweise
Estimated: at 50 MHz with all peripherals active, the PIC32MX270F256B-V/SS draws approximately 25 mA (0.5 mA/MHz typical run current per Microchip datasheet DS60001168L). With a 3.3 V supply this is roughly 82 mW. Place a 100 nF decoupling capacitor within 5 mm of every VDD/AVDD pin and a bulk 4.7 uF or 10 uF tantalum or ceramic capacitor on each supply rail. AVDD should be tied to VDD through a ferrite bead for noise-sensitive ADC measurements, with its own 100 nF decoupling cap within 5 mm of the AVDD pin. The 2.3 V minimum operating voltage allows direct Li-Ion battery operation with adequate headroom above the 3.0 V discharge cutoff.
Route the USB D+ (pin 24) and USB D- (pin 25) traces as a 90 ohm differential pair with length matching to within 150 mil, and keep them away from switching nodes or clock traces. Place the 15 kohm USB D- pull-down resistor and the 1.5 kohm USB D+ pull-up resistor close to the respective pins. Use a series ferrite bead on VBUS for ESD suppression, and add a USBLC6-2SC6 ESD protection array right at the USB connector. Microchip datasheet DS60001168L section on USB hardware design guidelines provides detailed impedance and routing recommendations to pass USB compliance.
The 50 MHz MIPS M4K core requires a stable clock source - use a fundamental-mode crystal with proper load capacitors per Microchip datasheet DS60001168L. A 12 MHz or 24 MHz primary oscillator works directly with the internal PLL to produce 50 MHz system clock. Place the crystal within 10 mm of the OSCI/OSCO pins, with load capacitors on each side. For USB applications avoid using the internal RC oscillator for the USB module, which requires a precise 48 MHz derived from the primary crystal + PLL. The CTMU peripheral is sensitive to analog supply noise - separate AVDD/VSS planes reduce jitter on capacitive touch measurements.
PPS (Peripheral Pin Select) mappings must be unlocked, configured, and locked at runtime before each peripheral is enabled - omitting this step leaves peripherals on their default pins. The USB module must be unlocked via CFGCON.FUSBUSIO before USB I/O is available on the shared D+/D- pins. CTMU current sources require calibration at startup using the internal bandgap reference for accurate touch and time measurements. Finally, the device ships with all analog and digital pins configured as analog inputs - firmware must reconfigure pins to digital I/O before use. Always consult the PIC32MX1XX/2XX family errata document before committing to a final design.
The SSOP-28 package has a 0.65 mm pitch and 5.30 mm body width - smaller than SOIC-28 (1.27 mm pitch, 7.50 mm body). For hand soldering use a fine tip and flux, with magnification to inspect bridges. For reflow use a standard lead-free profile (peak 245 C for 30 seconds max) with sufficient copper area on VDD/VSS traces to act as thermal relief. Place decoupling capacitors on the same layer as the MCU when possible, with vias connecting to internal ground planes. Keep analog signal traces away from the 48 MHz USB clock domain to avoid ADC noise coupling. The exposed thermal pad on QFN variants (not used here) requires additional thermal vias.
Compliance-Informationen
RoHS compliant per Microchip product page. Lead-free SSOP-28 package. Not AEC-Q100 qualified - automotive customers should review Microchip automotive-grade PIC32MX alternatives. Operating temperature -40C to +105C industrial grade per -V suffix.
