PIC32MX550F256LT-50I/PT - 50MHz 32-bit MCU 256KB Flash | Microchip
部品番号: PIC32MX550F256LT-50I/PT ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $2.3893 | $2.39 |
PIC32MX550F256LT-50I/PT 概要
A PIC32MX microcontroller is a 32-bit MIPS-based MCU from Microchip's PIC32 family, which sits between the 8-bit PIC16/PIC24 families and higher-performance MIPS cores. It is a Harvard-architecture MCU combining deterministic interrupt response with M4K pipeline efficiency, designed for embedded control and connectivity. Within Microchip's taxonomy, PIC32MX belongs to the 32-bit MCU category -> microcontroller -> embedded processing IC -> semiconductor. It is widely used as a cost-effective, low-power 32-bit platform for industrial, consumer, and audio bridging applications.
Key features include 50 MHz / 83 DMIPS core speed, 256 KB Flash program memory, 32 KB SRAM, Peripheral Pin Select (PPS) for flexible pin mapping, Parallel Master Port (PMP) with dual read/write buffers for graphics interfaces, 5-bit parallel master port, USB 2.0 FS OTG, two I2S, four SPI, two I2C, five UART, 16-bit timers, 10-bit ADC at 1 Msps, and CTMU for capacitive touch sensing. The 100-pin TQFP exposes up to 85 digital I/O, which is more than the 64-pin equivalents remain useful for.
The PIC32MX550F256L silicon uses the MIPS32 M4K core with single-cycle hardware multiply and zero-overhead loop instructions, achieving 1.66 DMIPS/MHz. The 256 KB Flash is single-voltage programmable with 20K erase cycles endurance, and 32 KB SRAM supports DMA without CPU load. The USB 2.0 FS OTG PHY is integrated on-chip, eliminating the need for an external PHY. PMP enables connection to graphics controllers and external parallel memory or bus peripherals.
Typical applications include USB audio interfaces (USB-to-I2S bridges), industrial HMI with graphics, capacitive-touch user interfaces using CTMU, sensor hubs with USB-CDC or USB-HID, digital signage controllers, and consumer audio docks. Exact line-to-line pin compatibility with smaller PIC32MX variants is achieved through PPS remapping. When designing with this part, observe the 2.3V-3.6V VDD range and provide a 12 MHz or 24 MHz crystal for the primary oscillator with USB operation requiring 48 MHz PLL lock.
ドロップイン代替品: PIC32MX550F256LT-50I/PT — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PIC32MX550F256LT-50I/PT （同一形状・フットプリント） — 相違点: ADC, Package, USB, Operating Temperature, CAN.
クイック比較ツール — 並列比較する代替部品を選択:
PIC32MX550F256L-50I/PT
✅ ドロップイン✓ 在庫あり
$3.96 / 個
データシートを見る →PIC32MX550F256H-50I/PT
✅ ドロップイン✓ 在庫あり
$3.05 / 個
データシートを見る →PIC32MX550F256LT-I/PT
✅ ドロップイン✓ 在庫あり
$4.16 / 個
データシートを見る →PIC32MX570F512L-50I/PT
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$5.3 / 個
データシートを見る →PIC32MX270F512L-50I/PT
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$4.65 / 個
データシートを見る →PIC32MX470F512L-50I/PT
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC32MX550F256LT-50I/PT 最大定格＆電気的特性
| Core Architecture | MIPS32 M4K 32-bit |
| Maximum CPU Speed | 50 MHz (83 DMIPS) |
| Program Flash Memory | 256 KB |
| SRAM | 32 KB |
| パッケージ | 100-pin TQFP (PT), 12x12 mm |
| Operating Voltage (VDD) | 2.3 V to 3.6 V |
| 動作温度 | -40 C to +85 C (Industrial, 'I') |
| USB | USB 2.0 Full-Speed Device/Host/OTG (integrated PHY) |
| I2S Modules | 2 |
| SPI Modules | 4 |
| I2C Modules | 2 |
| UART Modules | 5 |
| ADC | 10-bit, up to 1 Msps, up to 28 channels |
| Comparators | 3 |
| CTMU (Capacitive Touch) | Yes |
| RTCC (Real-Time Clock Calendar) | Yes |
| Parallel Master Port (PMP) | Yes (dual read/write buffers) |
| Peripheral Pin Select (PPS) | Yes |
| DMA Channels | 8 |
| Timers | 5 x 16-bit, 2 x 32-bit |
| I/O Pins | 85 |
| 実装タイプ | Surface Mount |
| MSLレベル | 3 |
| RoHS ステータス | Compliant |
PIC32MX550F256LT-50I/PT 100-pin tqfp (pt), 12x12 mm ピン配置ガイド
PIC32MX550F256LT-50I/PT (100-pin tqfp (pt), 12x12 mm パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: PIC32MX550F256LT-50I/PT.
詳細は データシート をご参照ください。
主な用途
PIC32MX550F256LT-50I/PT の用途: 7 件s: USB-to-I2S Audio Bridge, Industrial HMI with Graphics Display, Capacitive Touch Control Panel, USB Sensor Hub / Data Acquisition, Digital Signage / Kiosk Controller, Consumer Audio Dock, Motorized Valve / Small Motor Drive.
USB-to-I2S Audio Bridge
The PIC32MX550F256LT-50I/PT is purpose-built for USB audio class interfaces because it integrates USB 2.0 FS OTG with on-chip PHY, two I2S modules, and 256 KB Flash large enough for USB Audio class 1.0/2.0 stacks. At 50 MHz / 83 DMIPS the M4K core handles USB enumeration plus 48 kHz / 96 kHz I2S streaming without CPU stall. Use the second I2S as a S/PDIF transmit path and the comparators for signal detect.
おすすめ
Industrial HMI with Graphics Display
The PIC32MX550F256LT-50I/PT drives small TFT LCDs through the Parallel Master Port (PMP) with dual read/write buffers, freeing the CPU from byte-by-byte display updates. The 50 MHz core renders menus at 60 fps, and the 85 I/O pins leave headroom for keypad scan, status LEDs, and RS-485 comms. The 10-bit 1 Msps ADC reads analog sensors concurrently with display refresh.
おすすめ
Capacitive Touch Control Panel
The on-chip CTMU (Charge Time Measurement Unit) combined with the 10-bit ADC makes the PIC32MX550F256LT-50I/PT ideal for capacitive touch sliders, wheels, and matrix keypads without an external touch IC. With up to 28 ADC channels and 85 I/O, engineers can implement 30+ touch electrodes with one MCU. The RTCC handles wake-on-touch scheduling for battery-powered panels.
おすすめ
USB Sensor Hub / Data Acquisition
Use the integrated USB 2.0 FS OTG to expose multi-channel sensor readings via virtual COM, HID, or vendor-class endpoints. The 8 DMA channels move ADC samples to USB endpoint RAM without CPU intervention, and the 50 MHz MIPS core handles up to 8 kHz sample rates across the 1 Msps ADC. Ideal for USB-based oscilloscope probes and lab instruments.
おすすめ
Digital Signage / Kiosk Controller
The PIC32MX550F256LT-50I/PT drives low-resolution LCDs via PMP, plays back image sequences from external SPI Flash, and communicates with cloud services via USB Ethernet bridge or Wi-Fi modules through UART/SPI. The 32 KB SRAM holds frame buffers, and the 50 MHz core runs Lua or custom scripting for animated signage.
おすすめ
Consumer Audio Dock
Plug a smartphone or laptop into the USB OTG port, route audio through I2S to a Class-D amplifier, and provide charging passthrough. The PIC32MX550F256LT-50I/PT's two I2S blocks support input and output paths simultaneously, enabling headset and speaker arrays simultaneously. The RTCC schedules automatic standby/wake for low-power idle.
おすすめ
Motorized Valve / Small Motor Drive
The 5 timers, 16-bit and 32-bit, combined with the 3 on-chip comparators allow the PIC32MX550F256LT-50I/PT to generate PWM, sense back-EMF, and implement closed-loop control of small BLDC or stepper motors. USB OTG is convenient for firmware updates and parameter tuning via a host PC. The 85 I/O exposes ports for end-stop and encoder feedback.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: PIC32MX550F256LT-50I/PT — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | PIC32MX550F256L-50I/PT | PIC32MX550F256H-50I/PT | PIC32MX550F256LT-I/PT | PIC32MX570F512L-50I/PT | PIC32MX270F512L-50I/PT | PIC32MX470F512L-50I/PT |
|---|---|---|---|---|---|---|---|
| Package | 100-TQFP (PT, 12x12) | 100-TQFP (PT, 12x12) - same | 100-TQFP (PT, 12x12) - same | 100-TQFP (PT, 12x12) - same | 100-TQFP (PT, 12x12) - same | 100-TQFP (PT, 12x12) - same | 100-TQFP (PT, 12x12) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| 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 | MIPS32 M4K, 32-bit |
| Maximum CPU Speed | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) | 40 MHz (66 DMIPS) | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB | 64 KB | 64 KB |
| USB 2.0 FS OTG PHY | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated) | No | Yes (integrated) |
| I2S Modules | 2 | 2 | 2 | 2 | 2 | 0 | 0 |
| CTMU (Capacitive Touch) | Yes | Yes | Yes | Yes | Yes | No | Yes |
| Operating Temperature | -40 C to +85 C (I-grade) | -40 C to +85 C (I-grade) | -40 C to +85 C (I-grade) | -40 C to +85 C (I-grade) | -40 C to +85 C (I-grade) | -40 C to +85 C (I-grade) | -40 C to +85 C (I-grade) |
主な差別化要因
- Integrated USB 2.0 FS OTG PHY with PIC32MX550 family （vs PIC32MX270F512L-50I/PT)
- Two dedicated I2S audio interfaces （vs PIC32MX470F512L-50I/PT)
- 50 MHz speed grade with same package and 256 KB Flash （vs PIC32MX550F256LT-I/PT)
設計ノート
The PIC32MX550F256LT-50I/PT requires a regulated 2.3V-3.6V supply on VDD with separate AVDD filtering for the ADC. Place a 10 uF bulk + 100 nF ceramic decoupling pair within 5 mm of each VDD pin, and connect AVDD through a ferrite bead or 10 ohm resistor with its own 100 nF + 10 uF filter. Keep VDDCORE filtered through the on-chip regulator; do not drive VDDCORE externally.
USB operation requires the on-chip PLL locked to 48 MHz. The primary oscillator must use a 12 MHz or 24 MHz crystal with the correct HS/PLL configuration bits set in OSCCON. Forgetting to enable the USB PLL or using an incorrect OSCCON setting results in USB enumeration failure that looks like a hardware fault. Verify the VBUS pin has proper ESD protection (USB-IF compliant TVS array).
Route the USB D+/D- pair as a 90 ohm differential trace matched within 150 mil length mismatch. Place the crystal within 8 mm of OSC1/OSC2 with short, symmetric traces and a guard ring tied to GND. The 100-pin TQFP allows four-layer stack-up with continuous GND plane under the device; keep analog traces away from PWM and I2S clock signals to minimize crosstalk into the ADC.
The I2S interface runs at up to 12.288 MHz for 96 kHz audio. Source-terminate the MCLK line with 33 ohm series resistor if the run exceeds 50 mm to suppress reflections. The PMP bus for graphics operates at up to 25 MHz - add 22 ohm series damping on the byte-wide data bus for runs > 40 mm.
コンプライアンス情報
RoHS and REACH compliant per Microchip product page. Industrial temperature grade (-40C to +85C) is not AEC-Q100 automotive qualified; for automotive applications choose the AEC-Q100 qualified variant if available.
