PIC32MX250F256L-50I/PT - 50MHz 256KB Flash 32-bit MCU | Microchip
Артикул: PIC32MX250F256L-50I/PT ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $9.2 | $9,20 |
| 10 | $8.45 | $84,50 |
| 100 | $7.55 | $755,00 |
| 500 | $6.85 | $3.425,00 |
| 1.000 | $6.2 | $6.200,00 |
| 3.000 | $5.75 | $17.250,00 |
PIC32MX250F256L-50I/PT Обзор
A 32-bit microcontroller (MCU) is a microprocessor core with on-chip Flash program memory, SRAM data memory, and integrated peripherals such as timers, ADC, communication controllers, and I/O. Within the system hierarchy, an MCU sits at the top of the embedded control stack: MCU -> microcontroller -> embedded processor -> semiconductor. The PIC32MX family uses the MIPS32 M4K Harvard architecture, which separates instruction and data paths and provides single-cycle multiply, hardware divide, and a deterministic interrupt response tailored to real-time embedded control.
Key differentiating features include a USB 2.0-compliant Full-Speed On-The-Go (OTG) controller, four SPI/I2S modules for codec and serial communication, a Parallel Master Port (PMP) with dual buffers for graphics interfaces, two I2C modules, and a 10-bit 1 Msps ADC with up to 28 channels. The PPS function allows digital peripheral pin assignments to be remapped in software, decoupling peripheral selection from physical pinout and simplifying PCB layout.
Architecturally, the PIC32MX250 family is built on a 5-stage pipeline MIPS32 M4K core and integrates a dedicated DMA controller, a crypto engine, and a CTMU for capacitive touch sensing. The 256 KB Flash is arranged as 256K x 8, supporting self-programming under firmware control and IEC 60730 Class B support via the Flash Error Correction Code (ECC) and supporting libraries.
Typical applications include USB peripherals and embedded hosts (HID, CDC, mass storage), audio playback with I2S DACs, low-cost graphical HMI with PMP-driven LCDs, capacitive-touch user interfaces, and industrial control nodes. The combination of USB OTG, large SRAM, and PPS makes the PIC32MX250F256L-50I/PT a flexible general-purpose 32-bit platform for both consumer and industrial designs.
Design tip: place 0.1 µF decoupling capacitors as close as possible to every VDD/VSS pin pair and add a bulk 10 µF tantalum or ceramic capacitor near the IC. For USB designs, the 90 Ω differential D+/D- trace impedance must be controlled and the VBUS line should include ESD protection rated at IEC 61000-4-2 Level 4.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes beyond what the manufacturer datasheet provides, giving engineers a single reference for sourcing and design-in.
Аналоги без доработки для PIC32MX250F256L-50I/PT — 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 PIC32MX250F256L-50I/PT (тот же форм-фактор и посадочное место) — отличается по ADC, Package, Core Architecture, USB, SRAM.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC32MX250F256HT-I/PT
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$5.1 / шт.
Открыть даташит →PIC32MX250F256L-50I/PF
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
PIC32MX250F256H-50I/PT
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$4.55 / шт.
Открыть даташит →PIC32MX230F256D-50I/PT
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$4.15 / шт.
Открыть даташит →PIC32MX170F512L-50I/PT
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
PIC32MX274F256D-I/PT
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC32MX250F256L-50I/PT Максимальные параметры и электрические характеристики
| Core Architecture | MIPS32 M4K 32-bit |
| Maximum CPU Speed | 50 MHz / 83 DMIPS |
| Program Memory (Flash) | 256 KB (256K x 8) |
| Data Memory (SRAM) | 32 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Корпус | 100-pin TQFP (PT) 12x12 mm |
| Диапазон рабочих температур | -40C to +85C (Industrial) |
| Number of I/O Pins | 81 |
| USB | USB 2.0 Full-Speed OTG |
| ADC | 10-bit, up to 1 Msps |
| SPI / I2S Modules | 4 (SPI/I2S configurable) |
| I2C Modules | 2 |
| Parallel Master Port (PMP) | Yes, with dual buffers |
| DMA Channels | 4 (with FIFOs) |
| Peripheral Pin Select (PPS) | Yes |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
| Уровень MSL | 3 (168 hours) |
Конфигурация выводов PIC32MX250F256L-50I/PT
| Контакт 1 | RG15 — General purpose I/O / SDA2 (PPS) |
| Контакт 2 | VDD — Positive supply (2.3 V to 3.6 V) |
| Контакт 3 | RP10/RD0 — Remappable peripheral I/O |
| Контакт 4 | RP11/RD1 — Remappable peripheral I/O |
| Контакт 5 | RP4/PMD4/RD2 — Remappable peripheral I/O / PMP data |
| Контакт 6 | RP5/PMD5/RD3 — Remappable peripheral I/O / PMP data |
| Контакт 7 | VDD — Positive supply |
| Контакт 8 | VSS — Ground reference |
| Контакт 9 | RP6/PMD6/RD4 — Remappable peripheral I/O / PMP data |
| Контакт 10 | RP7/PMD7/RD5 — Remappable peripheral I/O / PMP data |
| Контакт 11 | RP8/PMD8/RD6 — Remappable peripheral I/O / PMP data |
| Контакт 12 | RP9/PMD9/RD7 — Remappable peripheral I/O / PMP data |
| Контакт 13 | VSS — Ground reference |
| Контакт 14 | PGEC2 — ICSP clock / debugging |
| Контакт 15 | PGED2 — ICSP data / debugging |
| Контакт 16 | RG6 — General purpose I/O |
| Контакт 17 | RG7 — General purpose I/O |
| Контакт 18 | RG8 — General purpose I/O |
| Контакт 19 | RG9 — General purpose I/O |
| Контакт 20 | VSS — Ground reference |
| Контакт 21 | RG0 — General purpose I/O |
| Контакт 22 | RG1 — General purpose I/O |
| Контакт 23 | VUSB — USB internal 3.3 V regulator output (decouple 1uF) |
| Контакт 24 | D+ — USB D+ data line |
| Контакт 25 | D- — USB D- data line |
| Контакт 26 | VSS — Ground reference |
| Контакт 27 | PGEC3 — ICSP clock / debugging (alternate) |
| Контакт 28 | PGED3 — ICSP data / debugging (alternate) |
| Контакт 29 | RF0 — General purpose I/O |
| Контакт 30 | RF1 — General purpose I/O |
| Контакт 31 | RF2 — General purpose I/O |
| Контакт 32 | RF3 — General purpose I/O |
| Контакт 33 | RF4 — General purpose I/O |
| Контакт 34 | RF5 — General purpose I/O |
| Контакт 35 | VSS — Ground reference |
| Контакт 36 | RF6 — General purpose I/O |
| Контакт 37 | RF7 — General purpose I/O |
| Контакт 38 | RF8 — General purpose I/O |
| Контакт 39 | VSS — Ground reference |
| Контакт 40 | OSC1/CLKI/RC13 — Crystal oscillator input or external clock input |
| Контакт 41 | OSC2/CLKO/RC14 — Crystal oscillator output or clock output |
| Контакт 42 | SOSCI/RPC13/RC13 — Secondary oscillator input |
| Контакт 43 | SOSCO/RPC14/RC14 — Secondary oscillator output |
| Контакт 44 | VDD — Positive supply |
| Контакт 45 | RA0 — General purpose I/O / analog input AN0 |
| Контакт 46 | RA1 — General purpose I/O / analog input AN1 |
| Контакт 47 | RA2 — General purpose I/O / analog input AN2 |
| Контакт 48 | RA3 — General purpose I/O / analog input AN3 |
| Контакт 49 | RA4 — General purpose I/O / analog input AN4 |
| Контакт 50 | RA5 — General purpose I/O / analog input AN5 |
| Контакт 51 | RA6 — General purpose I/O / analog input AN6 |
| Контакт 52 | RA7 — General purpose I/O / analog input AN7 |
| Контакт 53 | VSS — Ground reference |
| Контакт 54 | RB0 — General purpose I/O / AN8 / PGED1 |
| Контакт 55 | RB1 — General purpose I/O / AN9 / PGEC1 |
| Контакт 56 | RB2 — General purpose I/O / AN10 / CVREF+ |
| Контакт 57 | RB3 — General purpose I/O / AN11 / CVREF- |
| Контакт 58 | RB4 — General purpose I/O / AN12 |
| Контакт 59 | RB5 — General purpose I/O / AN13 |
| Контакт 60 | RB6 — General purpose I/O / AN14 |
| Контакт 61 | RB7 — General purpose I/O / AN15 |
| Контакт 62 | RB8 — General purpose I/O / AN16 |
| Контакт 63 | RB9 — General purpose I/O / AN17 |
| Контакт 64 | RB10 — General purpose I/O / AN18 |
| Контакт 65 | RB11 — General purpose I/O / AN19 |
| Контакт 66 | VSS — Ground reference |
| Контакт 67 | RB12 — General purpose I/O / AN20 |
| Контакт 68 | RB13 — General purpose I/O / AN21 |
| Контакт 69 | RB14 — General purpose I/O / AN22 |
| Контакт 70 | RB15 — General purpose I/O / AN23 |
| Контакт 71 | RC1 — General purpose I/O |
| Контакт 72 | RC2 — General purpose I/O |
| Контакт 73 | RC3 — General purpose I/O |
| Контакт 74 | RC4 — General purpose I/O |
| Контакт 75 | VDD — Positive supply |
| Контакт 76 | RD8/RTCC/PMRD — Remappable / RTCC output / PMP read strobe |
| Контакт 77 | RD9/PMWR — Remappable / PMP write strobe |
| Контакт 78 | RD10/PMCS1 — Remappable / PMP chip select 1 |
| Контакт 79 | RD11/PMCS2 — Remappable / PMP chip select 2 |
| Контакт 80 | RD12 — General purpose I/O |
| Контакт 81 | RD13 — General purpose I/O |
| Контакт 82 | RD14 — General purpose I/O |
| Контакт 83 | RD15 — General purpose I/O |
| Контакт 84 | VSS — Ground reference |
| Контакт 85 | RE0 — General purpose I/O / PMD0 |
| Контакт 86 | RE1 — General purpose I/O / PMD1 |
| Контакт 87 | RE2 — General purpose I/O / PMD2 |
| Контакт 88 | RE3 — General purpose I/O / PMD3 |
| Контакт 89 | RE4 — General purpose I/O / PMD4 (alt) |
| Контакт 90 | RE5 — General purpose I/O / PMD5 (alt) |
| Контакт 91 | RE6 — General purpose I/O / PMD6 (alt) |
| Контакт 92 | RE7 — General purpose I/O / PMD7 (alt) |
| Контакт 93 | RG2 — General purpose I/O |
| Контакт 94 | RG3 — General purpose I/O |
| Контакт 95 | MCLR — Master Clear (reset) input |
| Контакт 96 | RG12 — General purpose I/O |
| Контакт 97 | RG13 — General purpose I/O |
| Контакт 98 | RG14 — General purpose I/O |
| Контакт 99 | VDD — Positive supply |
| Контакт 100 | RG15 — General purpose I/O (alt location) |
Типичное применение
PIC32MX250F256L-50I/PT подходит для 6 применениеs: USB Audio Class (UAC) DAC Peripheral, Graphical HMI with Parallel LCD, Industrial Sensor Hub with USB Diagnostics, Capacitive Touch Control Panel, Portable Data Logger with USB Mass Storage, Embedded Web Server (Lightweight HTTP).
USB Audio Class (UAC) DAC Peripheral
The PIC32MX250F256L-50I/PT is well matched to USB audio class peripherals because it combines an on-chip USB 2.0 Full-Speed OTG controller, four I2S-capable SPI modules for connecting external DACs, and 32 KB SRAM for sample buffering at 48 kHz/16-bit stereo. The PIC32MX250F256L-50I/PT can sustain 50 MHz core operation while servicing the USB interrupt, leaving cycles for audio rendering. The on-chip DMA controller moves samples between the USB endpoint FIFO and the I2S transmit buffer without CPU intervention. Recommended companion: AKM AK4452 I2S DAC and TI TPS2051B USB power switch.
Рекомендуется
Graphical HMI with Parallel LCD
The Parallel Master Port (PMP) on the PIC32MX250F256L-50I/PT supports 8-bit and 16-bit data widths with dual read/write buffers, enabling the PIC32MX250F256L-50I/PT to drive small QVGA (320x240) TFT LCDs without an external controller. With 256 KB Flash, full-frame graphical firmware libraries fit on-chip, and the 81 I/O pins provide ample signal lines for touch, backlight, and SD card interfaces. The 50 MHz core refreshes the display from internal SRAM without DMA bottlenecks.
Рекомендуется
Industrial Sensor Hub with USB Diagnostics
For industrial sensor aggregation, the PIC32MX250F256L-50I/PT provides two I2C buses, four SPI ports, and a 10-bit 1 Msps ADC with up to 28 input channels. Engineers use the USB OTG controller as a service port for diagnostics and firmware update, while the 32 KB SRAM buffers sensor frames before uploading to a host. The -40C to +85C industrial temperature range covers most factory-floor enclosures without derating.
Рекомендуется
Capacitive Touch Control Panel
The PIC32MX250F256L-50I/PT integrates the Charge Time Measurement Unit (CTMU), which combined with the on-chip 10-bit ADC and PPS-mappable I/O enables up to 16 capacitive touch buttons or a 4x4 matrix. Designers use the PPS function to route CTMU channels to any spare I/O pin, simplifying PCB layout for irregular-shaped touch pads. The 256 KB Flash accommodates Microchip's mTouch library plus a custom UI state machine.
Рекомендуется
Portable Data Logger with USB Mass Storage
Battery-powered data loggers benefit from the PIC32MX250F256L-50I/PT because it runs from a single Li-Ion cell (2.3 V to 3.6 V), integrates USB Full-Speed for direct connection to a host PC, and provides 256 KB Flash plus 32 KB SRAM for circular log buffers. The PIC32MX250F256L-50I/PT implements USB Mass Storage Class using the on-chip Flash or an external SPI Flash as the backing store. Power-down current with the on-chip RTCC is microampere-class, extending battery life during idle logging intervals.
Рекомендуется
Embedded Web Server (Lightweight HTTP)
Although the PIC32MX250F256L-50I/PT lacks Ethernet, it can implement a lightweight HTTP service over USB RNDIS or an external SPI-based Wi-Fi module such as the MRF24WG0MA. The PIC32MX250F256L-50I/PT runs Microchip's TCP/IP stack (MLA) in 256 KB Flash, and the 81 I/O pins provide a generous connection count to controlled devices. For secure deployments, the on-chip crypto engine accelerates AES-128/256 blocks used by TLS handshake acceleration.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC32MX250F256L-50I/PT — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC32MX250F256HT-I/PT | PIC32MX250F256L-50I/PF | PIC32MX250F256H-50I/PT | PIC32MX230F256D-50I/PT | PIC32MX170F512L-50I/PT | PIC32MX274F256D-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-pin TQFP (PT) 12x12 mm | 100-pin TQFP (PT) 12x12 mm - same | 100-pin TFBGA (PF) - same die, different package | 100-pin TQFP (PT) 12x12 mm - same | 100-pin TQFP (PT) 12x12 mm - same | 100-pin TQFP (PT) 12x12 mm - same | 100-pin TQFP (PT) 12x12 mm - same |
| Core | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit |
| Maximum CPU Speed | 50 MHz / 83 DMIPS | 50 MHz / 83 DMIPS | 50 MHz / 83 DMIPS | 50 MHz / 83 DMIPS | 40 MHz / 52 DMIPS | 50 MHz / 83 DMIPS | 72 MHz / 117 DMIPS |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 512 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB | 64 KB | 32 KB |
| USB OTG | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | No | Yes (Full-Speed) | No | Yes (Full-Speed) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +105C (AEC-Q100 Grade 2) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Approx. Unit Price (qty-1) | $9.20 (as of 2026-10-02) | Higher (extended temp) | Similar | Slightly lower (no USB) | Lower (less SRAM) | Higher (more Flash) | Slightly higher (newer family) |
Ключевые отличия
- Integrated USB 2.0 Full-Speed OTG controller with on-chip transceiver (против PIC32MX170F512L-50I/PT)
- 50 MHz / 83 DMIPS core speed for the same Flash/SRAM capacity (против PIC32MX230F256D-50I/PT)
- Full Peripheral Pin Select (PPS) remapping on all digital peripherals (против PIC32MX250F256H-50I/PT)
Заметки по проектированию
Place a 0.1 uF ceramic decoupling capacitor on every VDD/VSS pin pair as close to the package as physically possible (within 2 mm). Add a single 10 uF bulk ceramic or tantalum capacitor near the IC to handle transient load steps from the USB transceiver and ADC. The VUSB pin (pin 23) requires a 1 uF ceramic decoupling capacitor to ground per the Microchip PIC32MX2XX family datasheet, and this capacitor must be present even when USB is unused because the internal 3.3 V LDO remains active.
For USB designs, the D+ and D- traces must be routed as a 90 ohm differential pair with controlled impedance, using a continuous reference ground plane beneath. Length matching should hold within 150 mil between D+ and D- per the USB 2.0 specification. Place a common-mode choke or ferrite bead in series with VBUS if the design is susceptible to conducted EMI, and add ESD protection diodes (USBLC6-2SC6 or equivalent) rated at IEC 61000-4-2 Level 4 directly at the USB connector.
Use the Peripheral Pin Select (PPS) feature to remap digital peripherals (UART, SPI, I2C, timers) to any available I/O pin, but group high-speed SPI signals (SCK, MOSI, MISO) on adjacent pins to minimize loop area. Estimated: keep SCK trace length below 50 mm and route it on the top layer with a continuous ground plane on layer 2 to avoid EMI. Place the 8 MHz or 12 MHz crystal within 5 mm of the OSC1/OSC2 pins and guard the traces with a ground pour on both sides.
Do not skip the MCLR pull-up resistor; the MCLR pin (pin 95) requires a 10 kohm pull-up to VDD for reliable reset behavior, especially in noisy environments. Do not leave any VDD pin floating; the PIC32MX250F256L has multiple VDD pins (2, 7, 44, 75, 99) and all must be connected. Programming the device via ICSP requires both PGECx/PGEDx pairs to be accessible - if a pair is used exclusively for peripherals, keep the alternate pair (PGEC3/PGED3 on pins 27/28) free for in-circuit debugging.
When driving large parallel LCDs through the PMP, add 22 ohm series damping resistors on the PMD[15:0], PMRD, PMWR, and PMCS lines if the bus length exceeds 50 mm. The PMP can sustain up to 50 MHz operation but the actual throughput depends on the load capacitance of the LCD connector and cable. Estimated: total bus capacitance should be held below 50 pF to maintain 25 MHz PMP operation without bus errors.
Информация о соответствии
Standard -50I part is industrial-grade (-40C to +85C). For AEC-Q100 qualified parts, choose the -HT variant. RoHS and REACH compliance per Microchip product declarations.