PIC32MX254F128BT-I/MM - 32-bit 72MHz MCU, 128KB Flash | Microchip
Артикул: PIC32MX254F128BT-I/MM ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $5.2 | $5,20 |
| 10 | $4.78 | $47,80 |
| 100 | $4.12 | $412,00 |
| 500 | $3.65 | $1.825,00 |
| 1.000 | $3.2 | $3.200,00 |
PIC32MX254F128BT-I/MM Обзор
A PIC32MX microcontroller is a 32-bit MIPS-based MCU family from Microchip that bridges the gap between 8-bit PIC16/PIC24 devices and 32-bit ARM Cortex-M parts. Positioned in the hierarchy: PIC32MX -> PIC32 family -> 32-bit MCU -> microcontroller -> embedded controller. These parts offer deterministic interrupt latency, mature MPLAB XC32 toolchain support, and rich peripherals (USB, CAN, PMP, ADC, CTMU) for cost-sensitive embedded designs.
Key features include MIPS32 M4K single-core at 72 MHz, 128 KB Flash, 32 KB SRAM, full-speed USB 2.0 device/host/OTG, up to 17 general-purpose I/O pins with Peripheral Pin Select (PPS), 10-bit 1 Msps ADC with up to 13 channels, three analog comparators, two I2S/SPI modules, two UART/I2C modules, CTMU for capacitive touch, RTCC, and on-chip temperature measurement. XLP technology provides deep-sleep currents in the microamp range.
The architecture combines a 5-stage MIPS32 M4K pipeline with single-cycle multiply, hardware divide, and 1.5 DMIPS/MHz efficiency. Programmable Peripheral Pin Select remaps digital peripherals to any GPIO, simplifying PCB routing. The 28-pin QFN-S package with exposed pad enables low-thermal-resistance mounting for industrial-temperature operation.
Typical applications include consumer USB devices (HID, CDC, mass storage), low-power IoT sensor nodes, capacitive touch interfaces using CTMU, battery-powered medical monitors, industrial control panels, and home appliances. The USB 2.0 FS peripheral makes the part a strong fit for any design that needs a tethered PC interface without an external PHY.
When designing, use the MPLAB X IDE + XC32 compiler and program via ICSP (PGECx/PGEDx) or the standard 6-pin header. The exposed pad must be soldered to the ground plane for thermal performance and electrical reference. Plan USB DP/DN trace impedance to 90 ohm differential per USB 2.0 spec.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Аналоги без доработки для PIC32MX254F128BT-I/MM — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC32MX254F128BT-I/MM (тот же форм-фактор и посадочное место) — отличается по Operating Temperature, Package, ADC, Core Architecture, DMA Channels.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC32MX254F128B-I/MM
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC32MX154F128BT-I/MM
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC32MX250F128BT-I/MM
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC32MX174F256BT-I/MM
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC32MX170F256BT-I/MM
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC32MX130F128H-I/MR
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$3.05 / шт.
Открыть даташит →PIC32MX254F128BT-I/MM Максимальные параметры и электрические характеристики
| Core Architecture | MIPS32 M4K |
| Core Size | 32-bit single-core |
| Maximum CPU Clock | 72 MHz |
| Performance | 83 DMIPS |
| Program Memory (Flash) | 128 KB (128K x 8) |
| SRAM | 32 KB |
| Operating Voltage | 2.5 V to 3.6 V |
| Number of I/O Pins | 17 |
| Корпус | 28-QFN-S (6x6 mm) with exposed pad |
| USB | USB 2.0 Full-Speed (Device/Host/OTG) |
| ADC | 10-bit, up to 1 Msps |
| Analog Comparators | 3 |
| Рабочая температура | -40 C to +85 C (Industrial) |
| Тип монтажа | Surface Mount |
| Уровень MSL | 1 (unlimited) |
Конфигурация выводов PIC32MX254F128BT-I/MM
| Контакт 1 | RA0 — General purpose I/O / analog input AN0 |
| Контакт 2 | RA1 — General purpose I/O / analog input AN1 |
| Контакт 3 | RB0 — General purpose I/O / PGED1 (programming data) |
| Контакт 4 | RB1 — General purpose I/O / PGEC1 (programming clock) |
| Контакт 5 | RB2 — General purpose I/O / USB D- |
| Контакт 6 | RB3 — General purpose I/O / USB D+ |
| Контакт 7 | VDD — Positive supply voltage (2.5 V to 3.6 V) |
| Контакт 8 | VSS — Ground reference |
| Контакт 9 | OSC1 — External oscillator input / crystal connection |
| Контакт 10 | OSC2 — External oscillator output / crystal connection |
| Контакт 11 | RB4 — General purpose I/O / SOSCO (secondary oscillator out) |
| Контакт 12 | RB5 — General purpose I/O / SOSCI (secondary oscillator in) |
| Контакт 13 | RB6 — General purpose I/O / PGED2 (programming data) |
| Контакт 14 | RB7 — General purpose I/O / PGEC2 (programming clock) |
| Контакт 15 | RB8 — General purpose I/O |
| Контакт 16 | RB9 — General purpose I/O |
| Контакт 17 | RB10 — General purpose I/O |
| Контакт 18 | RB11 — General purpose I/O |
| Контакт 19 | RC0 — General purpose I/O |
| Контакт 20 | RC1 — General purpose I/O |
| Контакт 21 | RC2 — General purpose I/O |
| Контакт 22 | RC3 — General purpose I/O |
| Контакт 23 | RC4 — General purpose I/O |
| Контакт 24 | RC5 — General purpose I/O |
| Контакт 25 | RC6 — General purpose I/O |
| Контакт 26 | RC7 — General purpose I/O |
| Контакт 27 | RC8 — General purpose I/O |
| Контакт 28 | VUSB — USB internal transceiver supply (3.3 V typical) |
| Контакт EP | EP — Exposed thermal pad, must be soldered to VSS plane |
Типичное применение
PIC32MX254F128BT-I/MM подходит для 7 применениеs: USB HID / CDC Device, Capacitive Touch Interface (CTMU), Battery-Powered IoT Sensor Node, Industrial Control Panel, Medical Point-of-Care Monitor, Home Appliance with USB Diagnostics, USB Audio / MIDI Device.
USB HID / CDC Device
The PIC32MX254F128BT-I/MM's on-chip USB 2.0 Full-Speed transceiver with device/host/OTG support makes it ideal for USB HID peripherals, CDC virtual COM ports, and MSD devices. The 72 MHz MIPS32 M4K core at 83 DMIPS comfortably handles USB polling plus application code without DMA. Typical designs need only a 90 ohm differential pair on D+/D-, ESD protection array (such as USBLC6-2SC6), and 100 nF decoupling on VBUS. Microchip's MLA USB stack provides ready-to-use HID, CDC, and MSD class drivers for MPLAB X.
Рекомендуется
Capacitive Touch Interface (CTMU)
The integrated Charge Time Measurement Unit (CTMU) plus 10-bit ADC at 1 Msps lets the PIC32MX254F128BT-I/MM implement up to 17 capacitive touch buttons or sliders without an external touch IC. CTMU delivers charge-time resolution down to 1 ns, enabling reliable touch through 3-5 mm glass or plastic overlays. The 72 MHz core runs the touch-scan state machine plus UI rendering on small TFTs via PMP. mTouch reference designs from Microchip shorten time to prototype for white goods and consumer control panels.
Рекомендуется
Battery-Powered IoT Sensor Node
XLP (eXtreme Low Power) technology gives the PIC32MX254F128BT-I/MM deep-sleep currents in the microamp range with retention RAM and RTCC active. The 2.5-3.6 V operating range suits 2xAA or Li-coin cells directly. The 72 MHz core wakes briefly to sample sensors, transmit over USB or UART, and return to sleep, drawing microamp average current. The 32 KB SRAM buffers sensor frames; the 128 KB Flash holds the MPLAB X firmware plus a USB bootloader for field updates.
Рекомендуется
Industrial Control Panel
The industrial temperature range (-40 C to +85 C), USB for diagnostics, and 17 GPIO with Peripheral Pin Select make the PIC32MX254F128BT-I/MM well suited for industrial control panels, HMI keypads, and small PLC I/O modules. The hardware PMP interface can drive character LCDs or small parallel TFTs directly. Three analog comparators support over-current/voltage protection loops. The exposed-pad QFN-S package provides robust thermal performance for enclosed industrial cabinets.
Рекомендуется
Medical Point-of-Care Monitor
The PIC32MX254F128BT-I/MM's 10-bit ADC at 1 Msps with up to 13 analog inputs supports multi-channel physiological signal acquisition (pulse oximetry, temperature, ECG lead-off detection). The 83 DMIPS performance handles digital filtering and USB data streaming to a host PC without an external DSP. The 28-QFN-S (6x6 mm) package fits compact handheld enclosures. Use the RTCC for time-stamping patient measurements and the CTMU for capacitive coupling detection in ECG cables.
Рекомендуется
Home Appliance with USB Diagnostics
Coffee machines, washing machines, and HVAC controllers increasingly use USB ports for service diagnostics and firmware updates. The PIC32MX254F128BT-I/MM integrates USB FS plus all the control peripherals (PWM, ADC, comparators, RTCC) needed for appliance control in a single chip. The 128 KB Flash supports USB MSD bootloader plus full application code. The exposed pad QFN-S package handles the thermal load in enclosed appliance environments.
Рекомендуется
USB Audio / MIDI Device
The PIC32MX254F128BT-I/MM's I2S module combined with USB Full-Speed enables USB Audio Class 1.0 or USB MIDI device implementations. The 72 MHz core handles S/PDIF-to-USB bridging at 48 kHz with low latency. Microchip's MLA USB Audio stack provides reference firmware. The 32 KB SRAM is sufficient for short audio buffers; consider PIC32MX274 variants for multi-channel audio with more RAM. The exposed pad QFN-S package is ideal for compact desktop audio interfaces.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC32MX254F128BT-I/MM — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC32MX254F128B-I/MM | PIC32MX154F128BT-I/MM | PIC32MX174F256BT-I/MM | PIC32MX170F256BT-I/MM | PIC32MX250F128BT-I/MM |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same |
| Maximum CPU Clock | 72 MHz | 72 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 256 KB | 256 KB | 128 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB 2.0 Full-Speed | Yes | Yes | Yes | Yes | Yes | No |
| GPIO Count | 17 | 17 | 17 | 17 | 17 | 17 |
| Operating Voltage | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Ключевые отличия
- Higher CPU clock speed within same 28-QFN footprint (против PIC32MX154F128BT-I/MM)
- Larger Flash memory at same package (против PIC32MX250F128BT-I/MM)
- Integrated USB 2.0 Full-Speed transceiver (против PIC32MX170F256BT-I/MM)
Заметки по проектированию
The 28-QFN-S package has an exposed thermal pad (EP) that must be soldered to the PCB ground plane. For designs operating at full 72 MHz with USB active, a 4-layer PCB with the EP connected to a continuous ground pour is recommended. Estimate: at VDD = 3.3 V, CPU running at 72 MHz with all peripherals active, core current is roughly 30 mA, giving junction temperature rise of 15-20 C above ambient on a JEDEC EIA/JESD51 4-layer test board.
USB D+ and D- traces must be routed as a 90 ohm differential pair on the top layer with continuous ground reference underneath. Keep the pair length-matched within 150 mil and avoid vias. Place a 100 nF decoupling capacitor within 2 mm of each VDD pin. The VUSB pin requires a 100 nF bypass to ground; without it the internal USB transceiver will not function reliably. Place the 12 MHz primary oscillator within 5 mm of OSC1/OSC2 with a grounded guard ring.
Do not exceed 3.6 V on any VDD pin; the PIC32MX254 is not 5 V tolerant. Configure unused I/O as outputs (not inputs) to avoid parasitic current draw. When using Peripheral Pin Select (PPS), unlock the IOLOCK bit sequence before configuration and lock again afterward to prevent accidental remapping. The CTMU requires the on-chip current source calibration per datasheet section 38 - skip this and your touch readings will drift with temperature.
The 10-bit ADC at 1 Msps requires a low-impedance source (under 1 kohm) for full accuracy. Add a 100 nF bypass on each analog input pin in use. For ACAP/VCAP filtering, route analog and digital ground planes separately and join them at a single point near the IC's VSS pins. The 12 MHz primary oscillator is sensitive to capacitive loading - use a crystal or resonator with specified load capacitance matching the on-chip load caps (typically 8-15 pF).
Информация о соответствии
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40 C to +85 C is NOT AEC-Q100 automotive qualified; for automotive use, consider the PIC32MX254F128BT-V/MM automotive variant. Halogen-free per JEDEC JS709.
