PIC32MX250F256LT-I/PF - 32-bit MCU 256KB Flash 100-TQFP
N.º da peça: PIC32MX250F256LT-I/PF ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $6.05 | $6,05 |
| 10 | $5.44 | $54,40 |
| 100 | $4.84 | $484,00 |
| 500 | $4.36 | $2.180,00 |
| 1.000 | $3.88 | $3.880,00 |
PIC32MX250F256LT-I/PF Visão geral
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), working memory (SRAM), and integrated peripherals. The PIC32MX250 sits within the broader taxonomy of microcontroller -> 32-bit MCU -> MIPS-based MCU -> embedded controller -> semiconductor. It is designed for embedded applications that need more processing headroom than 8/16-bit MCUs but where a Linux-class application processor is overkill.
Key differentiating specifications include 256KB on-chip Flash (256K x 8 organization), 32KB SRAM, two I2S and four SPI modules for codec and serial communications, Peripheral Pin Select (PPS) for flexible pin mapping, a Parallel Master Port with dual buffers for graphics, and an integrated 10-bit ADC with CTMU for touch and capacitive sensing. The device supports 2.3V to 3.6V operation, and the -I suffix indicates an industrial temperature range of -40C to +85C.
The PIC32MX250 architecture uses a MIPS32 M4K Harvard core with separate instruction and data buses, hardware multiply/divide, and a 5-stage pipeline. The PPS subsystem allows most digital peripherals to be remapped to a wide choice of physical pins, simplifying PCB routing and enabling pin-compatible variants across different memory sizes without board redesign.
Typical applications include consumer audio (Bluetooth/I2S speakers), capacitive touch human-machine interfaces, low-cost graphics with PMP-driven TFT panels, USB device/host bridges, sensor hubs, and small industrial controllers. Its balance of Flash, RAM, and peripheral mix makes it well-suited to mid-volume connected products.
When designing with this part, plan the 40 MHz clock tree carefully, allocate PPS mappings before PCB layout, and ensure the 100-pin TQFP footprint is consistent with the -50I/PF or -50I/PT pin-compatible speed variants if headroom is needed.
This page synthesizes distributor pricing, drop-in alternatives drawn from Microchip's own PIC32MX2XX family, and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para PIC32MX250F256LT-I/PF — 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 PIC32MX250F256LT-I/PF (mesmo formato e footprint) — diferindo em ADC, Package, Parallel Master Port (PMP), CTMU (Capacitive Touch), Operating Temperature Range.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC32MX250F256L-I/PF
✅ Drop-In✓ Em estoque
$4.1 / unidade
Ver ficha técnica →PIC32MX250F256L-50I/PF
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC32MX270F256L-I/PF
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC32MX170F512L-I/PF
✅ Drop-In✓ Em estoque
$6.45 / unidade
Ver ficha técnica →PIC32MX130F128L-I/PF
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC32MX250F256LT-I/PF Classificações máximas e características elétricas
| Core Architecture | MIPS32 M4K |
| Core Type | PIC32MX 32-bit MCU |
| Maximum CPU Speed | 40 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| Data Memory (SRAM) | 32 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Faixa de temperatura de operação | -40 C to +85 C (Industrial, -I) |
| Encapsulamento | 100-pin TQFP (14x14 mm), TQFP-100 |
| Tipo de montagem | Surface Mount |
| I2S Modules | 2 |
| SPI Modules | 4 |
| Parallel Master Port (PMP) | Yes, with dual read/write buffers |
| Peripheral Pin Select (PPS) | Yes |
| ADC | 10-bit (1 MSPS), 1 module |
| CTMU (Capacitive Touch) | Yes |
| DMIPS | Up to 83 DMIPS (at 50 MHz core speed, family max) |
| Nível MSL | 3 (168 hours) |
| Status RoHS | Compliant |
| Lead-Free | Yes |
Configuração de pinos do PIC32MX250F256LT-I/PF
| Pino 1 | RG15 — General purpose I/O / PPS-mappable |
| Pino 2 | VDD — Supply voltage (2.3V to 3.6V) |
| Pino 3 | RF0 — General purpose I/O / PPS-mappable |
| Pino 4 | RF1 — General purpose I/O / PPS-mappable |
| Pino 5 | RG6 — General purpose I/O / PPS-mappable |
| Pino 6 | RG7 — General purpose I/O / PPS-mappable |
| Pino 7 | RG8 — General purpose I/O / PPS-mappable |
| Pino 8 | RG9 — General purpose I/O / PPS-mappable |
| Pino 9 | VSS — Ground |
| Pino 10 | VDD — Supply voltage |
| Pino 11 | RB0 — PPS-mappable I/O / PGED1 |
| Pino 12 | RB1 — PPS-mappable I/O / PGEC1 |
| Pino 13 | RB2 — PPS-mappable I/O |
| Pino 14 | RB3 — PPS-mappable I/O |
| Pino 15 | RB4 — PPS-mappable I/O |
| Pino 16 | RB5 — PPS-mappable I/O |
| Pino 17 | RB6 — PPS-mappable I/O |
| Pino 18 | RB7 — PPS-mappable I/O |
| Pino 19 | RB8 — PPS-mappable I/O |
| Pino 20 | RB9 — PPS-mappable I/O |
| Pino 21 | RB10 — PPS-mappable I/O |
| Pino 22 | RB11 — PPS-mappable I/O |
| Pino 23 | RB12 — PPS-mappable I/O |
| Pino 24 | RB13 — PPS-mappable I/O |
| Pino 25 | RB14 — PPS-mappable I/O |
| Pino 26 | RB15 — PPS-mappable I/O |
| Pino 27 | VSS — Ground |
| Pino 28 | VDD — Supply voltage |
| Pino 29 | RC12 — PPS-mappable I/O |
| Pino 30 | RC13 — PPS-mappable I/O |
| Pino 31 | RC14 — PPS-mappable I/O |
| Pino 32 | RC15 — PPS-mappable I/O |
| Pino 33 | VSS — Ground |
| Pino 34 | RD0 — PPS-mappable I/O |
| Pino 35 | RD1 — PPS-mappable I/O |
| Pino 36 | RD2 — PPS-mappable I/O |
| Pino 37 | RD3 — PPS-mappable I/O |
| Pino 38 | RD4 — PPS-mappable I/O |
| Pino 39 | RD5 — PPS-mappable I/O |
| Pino 40 | RD6 — PPS-mappable I/O |
| Pino 41 | RD7 — PPS-mappable I/O |
| Pino 42 | RD8 — PPS-mappable I/O |
| Pino 43 | RD9 — PPS-mappable I/O |
| Pino 44 | RD10 — PPS-mappable I/O |
| Pino 45 | RD11 — PPS-mappable I/O |
| Pino 46 | VSS — Ground |
| Pino 47 | VDD — Supply voltage |
| Pino 48 | RD12 — PPS-mappable I/O |
| Pino 49 | RD13 — PPS-mappable I/O |
| Pino 50 | RD14 — PPS-mappable I/O |
| Pino 51 | RD15 — PPS-mappable I/O |
| Pino 52 | RE0 — PPS-mappable I/O |
| Pino 53 | RE1 — PPS-mappable I/O |
| Pino 54 | RE2 — PPS-mappable I/O |
| Pino 55 | RE3 — PPS-mappable I/O |
| Pino 56 | RE4 — PPS-mappable I/O |
| Pino 57 | RE5 — PPS-mappable I/O |
| Pino 58 | RE6 — PPS-mappable I/O |
| Pino 59 | RE7 — PPS-mappable I/O |
| Pino 60 | RG0 — PPS-mappable I/O |
| Pino 61 | RG1 — PPS-mappable I/O |
| Pino 62 | RG2 — PPS-mappable I/O |
| Pino 63 | RG3 — PPS-mappable I/O |
| Pino 64 | VSS — Ground |
| Pino 65 | VDD — Supply voltage |
| Pino 66 | RF13 — PPS-mappable I/O |
| Pino 67 | RF12 — PPS-mappable I/O |
| Pino 68 | RF5 — PPS-mappable I/O |
| Pino 69 | RF4 — PPS-mappable I/O |
| Pino 70 | RF3 — PPS-mappable I/O |
| Pino 71 | RF2 — PPS-mappable I/O |
| Pino 72 | RC1 — PPS-mappable I/O |
| Pino 73 | RC2 — PPS-mappable I/O |
| Pino 74 | RC3 — PPS-mappable I/O |
| Pino 75 | RC4 — PPS-mappable I/O |
| Pino 76 | VSS — Ground |
| Pino 77 | RF8 — PPS-mappable I/O |
| Pino 78 | VSS — Ground |
| Pino 79 | RA0 — PPS-mappable I/O |
| Pino 80 | RA1 — PPS-mappable I/O |
| Pino 81 | RA2 — PPS-mappable I/O |
| Pino 82 | RA3 — PPS-mappable I/O |
| Pino 83 | RA4 — PPS-mappable I/O |
| Pino 84 | RA5 — PPS-mappable I/O |
| Pino 85 | RA6 — PPS-mappable I/O |
| Pino 86 | RA7 — PPS-mappable I/O |
| Pino 87 | RA8 — PPS-mappable I/O |
| Pino 88 | RA9 — PPS-mappable I/O |
| Pino 89 | RA10 — PPS-mappable I/O |
| Pino 90 | RG14 — PPS-mappable I/O |
| Pino 91 | RG12 — PPS-mappable I/O |
| Pino 92 | RG13 — PPS-mappable I/O |
| Pino 93 | VDD — Supply voltage |
| Pino 94 | VSS — Ground |
| Pino 95 | RF6 — PPS-mappable I/O |
| Pino 96 | RF7 — PPS-mappable I/O |
| Pino 97 | RG1 — PPS-mappable I/O |
| Pino 98 | RG0 — PPS-mappable I/O |
| Pino 99 | RG15 — PPS-mappable I/O |
| Pino 100 | VSS — Ground |
Aplicações típicas
PIC32MX250F256LT-I/PF é adequado para 6 aplicaçãos: Consumer Audio (I2S Speakers / Headphones), Capacitive Touch HMI (Kitchen Appliances, Industrial Panels), Small TFT Graphical Display (PMP-Driven Panels), USB Device/Host Bridge (Custom HID / Mass Storage), IoT Sensor Hub and Edge Node, Industrial Control (Motor / Valve / Sensor Aggregation).
Consumer Audio (I2S Speakers / Headphones)
The PIC32MX250F256LT-I/PF fits consumer audio because it integrates two I2S modules and four SPI ports for the audio codec plus Bluetooth transport, and the MIPS M4K core at 40 MHz (66 DMIPS) has the headroom to decode MP3/AAC streams. The 32 KB SRAM accommodates compressed audio buffers while the 256 KB Flash holds firmware plus decoder tables. Placed as the central controller between the Bluetooth module, audio DAC, and user input, it eliminates the need for a separate DSP. Trade-off vs an STM32F4: lower raw MIPS but more flexible PPS routing in the 100-pin TQFP.
Recomendado
Capacitive Touch HMI (Kitchen Appliances, Industrial Panels)
The PIC32MX250F256LT-I/PF supports capacitive touch through its integrated CTMU and 10-bit 1 MSPS ADC, with Microchip mTouch libraries validated on the PIC32MX2XX family. The 100-pin TQFP exposes up to 83 I/O pins, easily accommodating 20+ touch electrodes, slider strips, and proximity sensors. Placed at the front-panel MCU, the device drives both the touch scanning loop and the appliance control logic; the 32 KB SRAM handles touch baseline history. Unlike dedicated touch ICs, it shares scan, comms, and UI rendering on one die, lowering BOM and firmware complexity.
Recomendado
Small TFT Graphical Display (PMP-Driven Panels)
The PIC32MX250F256LT-I/PF drives small TFT panels through its Parallel Master Port with dual read/write buffers, offloading pixel transfer via DMA and freeing the M4K core for UI logic. At 40 MHz and 32 KB SRAM it handles QVGA-class panels with partial frame buffers; the 100-pin TQFP (PF) exposes the full PMP bus plus remaining GPIO for backlight and touch. Placed between the panel FPC and the rest of the system, it acts as a dedicated graphics co-processor; a higher-speed PIC32MX250F256L-50I/PF gives extra headroom for animations.
Recomendado
USB Device/Host Bridge (Custom HID / Mass Storage)
Although the PIC32MX250F256LT-I/PF itself does not contain a USB PHY, its PPS subsystem and 83 I/O pins make it well-suited as the bridge controller on a board where USB signaling is handled by an external PHY such as the PIC32MX USB-capable siblings. The 256 KB Flash holds USB stack and class drivers, while 32 KB SRAM is ample for HID reports and bulk transfer buffers. As a bridge, it converts a parallel sensor data stream into USB HID or bulk transfers. The 40 MHz grade is sufficient for USB Full Speed (12 Mbps) protocol overhead and command parsing.
Recomendado
IoT Sensor Hub and Edge Node
The PIC32MX250F256LT-I/PF acts as a low-cost IoT edge node, fanning in UART, SPI, and I2C sensors through PPS-mapped pins and publishing over UART to a Wi-Fi/BLE module. With 256 KB Flash it accommodates TLS libraries or vendor stacks, and 32 KB SRAM is adequate for sensor frame buffering. At 2.3V to 3.6V it can be battery-powered with a switching regulator; the industrial -40C to +85C temperature range suits outdoor enclosures. Trade-off versus an ESP32: more deterministic real-time, lower power in deep-sleep via software MCU, but more external BOM.
Recomendado
Industrial Control (Motor / Valve / Sensor Aggregation)
The PIC32MX250F256LT-I/PF fits small industrial controllers where deterministic response matters: the MIPS M4K core runs a real-time scheduler, the PMP and PPS simplify multi-axis sensor aggregation, and the CTMU handles analog front-end conditioning. The industrial -40C to +85C grade tolerates cabinet environments, and the 100-pin TQFP eases layout for opto-isolated I/O groups. Placed at the heart of a small controller, it reads inputs, drives outputs, and reports over UART/CAN/Modbus via SPI-to-transceiver. The 40 MHz grade is sufficient when PID loops are modest and software is C-based.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC32MX250F256LT-I/PF — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC32MX250F256L-I/PF | PIC32MX250F256L-50I/PF | PIC32MX270F256L-I/PF | PIC32MX170F512L-I/PF | PIC32MX130F128L-I/PF |
|---|---|---|---|---|---|---|
| Package | TQFP-100 (PF, 14x14 mm) | TQFP-100 (PF, 14x14 mm) - same | TQFP-100 (PF, 14x14 mm) - same | TQFP-100 (PF, 14x14 mm) - same | TQFP-100 (PF, 14x14 mm) - same | TQFP-100 (PF, 14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum CPU Speed | 40 MHz | 40 MHz | 50 MHz (+25%) | 50 MHz (+25%) | 50 MHz (+25%) | 50 MHz (+25%) |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 512 KB (+100%) | 128 KB (-50%) |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Operating Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
| Temperature Range | -40 C to +85 C (Industrial) | -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 |
| USB Controller | None (USB via external PHY or sibling) | None | None | USB-OTG on-die | None | None |
Principais diferenciais
- Highest pin count in the family exposes full PMP and Trace (vs PIC32MX230F256DT-I/PT (TQFP-64))
- Doubled Flash headroom without changing footprint (vs PIC32MX130F128L-I/PF (128 KB))
- USB-OTG on-die available in sibling at same footprint (vs PIC32MX270F256L-I/PF)
Notas de projeto
The PIC32MX250F256LT-I/PF operates from a single 2.3V to 3.6V supply; place a 10 uF bulk plus 100 nF decoupling at every VDD/VSS pair on the 100-pin TQFP. Core current at 40 MHz is moderate (estimated 60 to 80 mA active, ~10 uA sleep per the PIC32MX1XX/2XX/5XX family datasheet). For USB or sensor rails, route analog AV+/AV- separately. Do not let the supply fall below 2.3V during Flash programming or the device will abort the write and may flag an ECC error.
Use a 4-layer PCB with continuous ground plane under the 100-pin TQFP and keep traces to the 8 MHz primary oscillator under 10 mm. PPS allows remapping most digital peripherals, but analog inputs (ANx) and the PMP bus are pin-fixed, so plan those routes first. Decoupling capacitors must be placed as close as possible to each VDD pin; the TQFP-100 has 6 VDD pins and 6 VSS pins distributed across all four sides.
Estimated: at 40 MHz peripheral bus (PBCLK = SYSCLK/1 default), high-speed SPI peripherals can exceed 40 MHz when configured carelessly - cap PBCLK per the family datasheet. The CTMU requires calibration via the CTMUCON register before touch scanning; skip this and touch readings drift. Finally, do not drive PMP data lines above VDD, as the parallel port has no 5V tolerance.
The 100-pin TQFP exposes JTAG (PGEC1/PGED1) and optionally Trace (TRCLK/TRD0-TRD3) on dedicated pins; keep these traces short and series-terminated if the cable to the programmer is longer than 100 mm. When using I2S to drive an external DAC, the MCLK output can be a source of spurs on the audio band - route I2S lines over an unbroken ground reference and isolate them from switching power traces.
Informações de conformidade
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - the PIC32MX family targets industrial/commercial not automotive. Halogen-free status not stated in retrieved data.
