PIC32MX250F256L-50I/PT - 50MHz 256KB Flash 32-bit MCU | Microchip
N.º da peça: PIC32MX250F256L-50I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 Visão geral
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.
Alternativas drop-in para PIC32MX250F256L-50I/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC32MX250F256L-50I/PT (mesmo formato e footprint) — diferindo em ADC, Package, Core Architecture, USB, SRAM.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC32MX250F256HT-I/PT
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$5.1 / unidade
Ver ficha técnica →PIC32MX250F256L-50I/PF
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC32MX250F256H-50I/PT
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$4.55 / unidade
Ver ficha técnica →PIC32MX230F256D-50I/PT
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$4.15 / unidade
Ver ficha técnica →PIC32MX170F512L-50I/PT
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC32MX274F256D-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC32MX250F256L-50I/PT Classificações máximas e características elétricas
| 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 |
| Encapsulamento | 100-pin TQFP (PT) 12x12 mm |
| Faixa de temperatura de operação | -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 |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Nível MSL | 3 (168 hours) |
Configuração de pinos do PIC32MX250F256L-50I/PT
| Pino 1 | RG15 — General purpose I/O / SDA2 (PPS) |
| Pino 2 | VDD — Positive supply (2.3 V to 3.6 V) |
| Pino 3 | RP10/RD0 — Remappable peripheral I/O |
| Pino 4 | RP11/RD1 — Remappable peripheral I/O |
| Pino 5 | RP4/PMD4/RD2 — Remappable peripheral I/O / PMP data |
| Pino 6 | RP5/PMD5/RD3 — Remappable peripheral I/O / PMP data |
| Pino 7 | VDD — Positive supply |
| Pino 8 | VSS — Ground reference |
| Pino 9 | RP6/PMD6/RD4 — Remappable peripheral I/O / PMP data |
| Pino 10 | RP7/PMD7/RD5 — Remappable peripheral I/O / PMP data |
| Pino 11 | RP8/PMD8/RD6 — Remappable peripheral I/O / PMP data |
| Pino 12 | RP9/PMD9/RD7 — Remappable peripheral I/O / PMP data |
| Pino 13 | VSS — Ground reference |
| Pino 14 | PGEC2 — ICSP clock / debugging |
| Pino 15 | PGED2 — ICSP data / debugging |
| Pino 16 | RG6 — General purpose I/O |
| Pino 17 | RG7 — General purpose I/O |
| Pino 18 | RG8 — General purpose I/O |
| Pino 19 | RG9 — General purpose I/O |
| Pino 20 | VSS — Ground reference |
| Pino 21 | RG0 — General purpose I/O |
| Pino 22 | RG1 — General purpose I/O |
| Pino 23 | VUSB — USB internal 3.3 V regulator output (decouple 1uF) |
| Pino 24 | D+ — USB D+ data line |
| Pino 25 | D- — USB D- data line |
| Pino 26 | VSS — Ground reference |
| Pino 27 | PGEC3 — ICSP clock / debugging (alternate) |
| Pino 28 | PGED3 — ICSP data / debugging (alternate) |
| Pino 29 | RF0 — General purpose I/O |
| Pino 30 | RF1 — General purpose I/O |
| Pino 31 | RF2 — General purpose I/O |
| Pino 32 | RF3 — General purpose I/O |
| Pino 33 | RF4 — General purpose I/O |
| Pino 34 | RF5 — General purpose I/O |
| Pino 35 | VSS — Ground reference |
| Pino 36 | RF6 — General purpose I/O |
| Pino 37 | RF7 — General purpose I/O |
| Pino 38 | RF8 — General purpose I/O |
| Pino 39 | VSS — Ground reference |
| Pino 40 | OSC1/CLKI/RC13 — Crystal oscillator input or external clock input |
| Pino 41 | OSC2/CLKO/RC14 — Crystal oscillator output or clock output |
| Pino 42 | SOSCI/RPC13/RC13 — Secondary oscillator input |
| Pino 43 | SOSCO/RPC14/RC14 — Secondary oscillator output |
| Pino 44 | VDD — Positive supply |
| Pino 45 | RA0 — General purpose I/O / analog input AN0 |
| Pino 46 | RA1 — General purpose I/O / analog input AN1 |
| Pino 47 | RA2 — General purpose I/O / analog input AN2 |
| Pino 48 | RA3 — General purpose I/O / analog input AN3 |
| Pino 49 | RA4 — General purpose I/O / analog input AN4 |
| Pino 50 | RA5 — General purpose I/O / analog input AN5 |
| Pino 51 | RA6 — General purpose I/O / analog input AN6 |
| Pino 52 | RA7 — General purpose I/O / analog input AN7 |
| Pino 53 | VSS — Ground reference |
| Pino 54 | RB0 — General purpose I/O / AN8 / PGED1 |
| Pino 55 | RB1 — General purpose I/O / AN9 / PGEC1 |
| Pino 56 | RB2 — General purpose I/O / AN10 / CVREF+ |
| Pino 57 | RB3 — General purpose I/O / AN11 / CVREF- |
| Pino 58 | RB4 — General purpose I/O / AN12 |
| Pino 59 | RB5 — General purpose I/O / AN13 |
| Pino 60 | RB6 — General purpose I/O / AN14 |
| Pino 61 | RB7 — General purpose I/O / AN15 |
| Pino 62 | RB8 — General purpose I/O / AN16 |
| Pino 63 | RB9 — General purpose I/O / AN17 |
| Pino 64 | RB10 — General purpose I/O / AN18 |
| Pino 65 | RB11 — General purpose I/O / AN19 |
| Pino 66 | VSS — Ground reference |
| Pino 67 | RB12 — General purpose I/O / AN20 |
| Pino 68 | RB13 — General purpose I/O / AN21 |
| Pino 69 | RB14 — General purpose I/O / AN22 |
| Pino 70 | RB15 — General purpose I/O / AN23 |
| Pino 71 | RC1 — General purpose I/O |
| Pino 72 | RC2 — General purpose I/O |
| Pino 73 | RC3 — General purpose I/O |
| Pino 74 | RC4 — General purpose I/O |
| Pino 75 | VDD — Positive supply |
| Pino 76 | RD8/RTCC/PMRD — Remappable / RTCC output / PMP read strobe |
| Pino 77 | RD9/PMWR — Remappable / PMP write strobe |
| Pino 78 | RD10/PMCS1 — Remappable / PMP chip select 1 |
| Pino 79 | RD11/PMCS2 — Remappable / PMP chip select 2 |
| Pino 80 | RD12 — General purpose I/O |
| Pino 81 | RD13 — General purpose I/O |
| Pino 82 | RD14 — General purpose I/O |
| Pino 83 | RD15 — General purpose I/O |
| Pino 84 | VSS — Ground reference |
| Pino 85 | RE0 — General purpose I/O / PMD0 |
| Pino 86 | RE1 — General purpose I/O / PMD1 |
| Pino 87 | RE2 — General purpose I/O / PMD2 |
| Pino 88 | RE3 — General purpose I/O / PMD3 |
| Pino 89 | RE4 — General purpose I/O / PMD4 (alt) |
| Pino 90 | RE5 — General purpose I/O / PMD5 (alt) |
| Pino 91 | RE6 — General purpose I/O / PMD6 (alt) |
| Pino 92 | RE7 — General purpose I/O / PMD7 (alt) |
| Pino 93 | RG2 — General purpose I/O |
| Pino 94 | RG3 — General purpose I/O |
| Pino 95 | MCLR — Master Clear (reset) input |
| Pino 96 | RG12 — General purpose I/O |
| Pino 97 | RG13 — General purpose I/O |
| Pino 98 | RG14 — General purpose I/O |
| Pino 99 | VDD — Positive supply |
| Pino 100 | RG15 — General purpose I/O (alt location) |
Aplicações típicas
PIC32MX250F256L-50I/PT é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC32MX250F256L-50I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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) |
Principais diferenciais
- Integrated USB 2.0 Full-Speed OTG controller with on-chip transceiver (vs PIC32MX170F512L-50I/PT)
- 50 MHz / 83 DMIPS core speed for the same Flash/SRAM capacity (vs PIC32MX230F256D-50I/PT)
- Full Peripheral Pin Select (PPS) remapping on all digital peripherals (vs PIC32MX250F256H-50I/PT)
Notas de projeto
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.
Informações de conformidade
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.