PIC32MX450F256L-V/PT - 80MHz 32-bit MCU 256KB Flash 100-TQFP
MPN: PIC32MX450F256L-V/PT ✓ Hoạt độngPIC32MX450F256L-V/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a processor core, program and data memory, and integrated peripherals. The PIC32 family sits at the upper end of Microchip's 32-bit MIPS-based MCU portfolio, providing 150 DMIPS performance, deterministic interrupt handling, and rich connectivity suitable for embedded control, USB host/device, and human-machine interface (HMI) applications. Within the broader taxonomy, PIC32MX parts occupy the PIC32 > 32-bit MCU > microcontroller > semiconductor hierarchy.
Key features include two I2S/SPI modules for codec and serial audio, a USB 2.0 full-speed OTG controller, Peripheral Pin Select (PPS) for flexible signal routing, a Parallel Master Port (PMP) for graphics interfacing, and a Charge Time Measurement Unit (CTMU) for capacitive touch sensing. The 2.3V to 3.6V operating range simplifies integration into 3.3V systems, and 256KB of Flash plus 64KB of SRAM comfortably support RTOS-based designs and protocol stacks such as USB, TCP/IP, and audio processing.
The PIC32MX450F256L-V/PT uses a 5-stage pipeline MIPS32 M4K core with hardware multiply/divide and shadow register sets for fast interrupt response. The 100-pin TQFP footprint exposes ample I/O for parallel buses, USB, and analog inputs, while on-chip peripherals reduce BOM cost. Compared to older PIC24/dsPIC devices, the 32-bit core and large memory open up graphical user interfaces, audio playback, and connectivity stacks.
Typical applications include USB audio devices, industrial HMI with TFT displays, capacitive touch keypads, and low-cost embedded web servers. Design considerations should account for the 80MHz operating frequency (versus the 120MHz marketing max), the industrial temperature range, and the need for proper decoupling near the MCU's power pins.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX450F256L-V/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC32MX450F256L-V/PT (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, DMA Channels, ADC, Operating Temperature.
PIC32MX450F256L-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX450F256LT-V/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX450F256H-V/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX350F256L-V/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX370F512L-V/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX460F512L-80V/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX450F256L-V/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K |
| Bề rộng đường dữ liệu | 32 bit |
| Tần số xung maksimum | 80 MHz (up to 120 MHz max) |
| Program Memory Size | 256 KB Flash |
| RAM Size | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Khoảng nhiệt độ hoạt động | -40 C to +105 C (V suffix) |
| Hộp | 100-pin TQFP (PT), 12x12 mm |
| Kiểu lắp đặt | Surface Mount |
| USB | USB 2.0 full-speed OTG controller |
| SPI/I2S Modules | 2 |
| Parallel Master Port (PMP) | Yes |
| CTMU (Capacitive Touch) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MX450F256L-V/PT
| Chân 1 | RG15 — General purpose I/O |
| Chân 2 | VDD — Digital supply voltage |
| Chân 3 | RA0 — Analog input / GPIO |
| Chân 4 | RA1 — Analog input / GPIO |
| Chân 5 | RA2 — Analog input / GPIO |
| Chân 6 | RA3 — Analog input / GPIO |
| Chân 7 | RA4 — Analog input / GPIO |
| Chân 8 | RA5 — Analog input / GPIO |
| Chân 9 | RB0 — GPIO |
| Chân 10 | RB1 — GPIO |
| Chân 11 | RB2 — GPIO |
| Chân 12 | RB3 — GPIO |
| Chân 13 | VSS — Ground |
| Chân 14 | RB4 — GPIO |
| Chân 15 | RB5 — GPIO |
| Chân 16 | RB6 — GPIO / ICD PGC |
| Chân 17 | RB7 — GPIO / ICD PGD |
| Chân 18 | RB8 — GPIO |
| Chân 19 | RB9 — GPIO |
| Chân 20 | RB10 — GPIO |
| Chân 21 | RB11 — GPIO |
| Chân 22 | VSS — Ground |
| Chân 23 | RB12 — GPIO |
| Chân 24 | RB13 — GPIO |
| Chân 25 | RB14 — GPIO |
| Chân 26 | RB15 — GPIO |
| Chân 27 | RC0 — GPIO |
| Chân 28 | RC1 — GPIO |
| Chân 29 | RC2 — GPIO |
| Chân 30 | VSS — Ground |
| Chân 31 | RC3 — GPIO |
| Chân 32 | RC4 — GPIO |
| Chân 33 | RC5 — GPIO |
| Chân 34 | RC6 — GPIO |
| Chân 35 | RC7 — GPIO |
| Chân 36 | RC8 — GPIO |
| Chân 37 | RC9 — GPIO |
| Chân 38 | VDD — Digital supply voltage |
| Chân 39 | RC10 — GPIO |
| Chân 40 | RC11 — GPIO |
| Chân 41 | RC12 — GPIO |
| Chân 42 | RC13 — GPIO |
| Chân 43 | RC14 — GPIO |
| Chân 44 | RC15 — GPIO |
| Chân 45 | VSS — Ground |
| Chân 46 | RD0 — GPIO / PMP |
| Chân 47 | RD1 — GPIO / PMP |
| Chân 48 | RD2 — GPIO / PMP |
| Chân 49 | RD3 — GPIO / PMP |
| Chân 50 | RD4 — GPIO / PMP |
| Chân 51 | RD5 — GPIO / PMP |
| Chân 52 | RD6 — GPIO / PMP |
| Chân 53 | RD7 — GPIO / PMP |
| Chân 54 | VSS — Ground |
| Chân 55 | RD8 — GPIO / PMP |
| Chân 56 | RD9 — GPIO / PMP |
| Chân 57 | RD10 — GPIO / PMP |
| Chân 58 | RD11 — GPIO / PMP |
| Chân 59 | RD12 — GPIO / PMP |
| Chân 60 | RD13 — GPIO / PMP |
| Chân 61 | RD14 — GPIO / PMP |
| Chân 62 | RD15 — GPIO / PMP |
| Chân 63 | VSS — Ground |
| Chân 64 | RE0 — GPIO / PMP |
| Chân 65 | RE1 — GPIO / PMP |
| Chân 66 | RE2 — GPIO / PMP |
| Chân 67 | RE3 — GPIO / PMP |
| Chân 68 | RE4 — GPIO / PMP |
| Chân 69 | RE5 — GPIO / PMP |
| Chân 70 | RE6 — GPIO / PMP |
| Chân 71 | RE7 — GPIO / PMP |
| Chân 72 | VDD — Digital supply voltage |
| Chân 73 | RF0 — GPIO |
| Chân 74 | RF1 — GPIO |
| Chân 75 | RF2 — GPIO |
| Chân 76 | RF3 — GPIO |
| Chân 77 | RF4 — GPIO |
| Chân 78 | RF5 — GPIO |
| Chân 79 | VSS — Ground |
| Chân 80 | RF6 — GPIO |
| Chân 81 | RF7 — GPIO |
| Chân 82 | RF8 — GPIO |
| Chân 83 | RF9 — GPIO |
| Chân 84 | RF10 — GPIO |
| Chân 85 | RF11 — GPIO |
| Chân 86 | RF12 — GPIO |
| Chân 87 | RF13 — GPIO |
| Chân 88 | VSS — Ground |
| Chân 89 | RG0 — GPIO |
| Chân 90 | RG1 — GPIO |
| Chân 91 | RG2 — GPIO / D+ (USB) |
| Chân 92 | RG3 — GPIO / D- (USB) |
| Chân 93 | RG6 — GPIO |
| Chân 94 | RG7 — GPIO |
| Chân 95 | RG8 — GPIO |
| Chân 96 | RG9 — GPIO |
| Chân 97 | VSS — Ground |
| Chân 98 | VDD — Digital supply voltage |
| Chân 99 | RG12 — GPIO |
| Chân 100 | RG14 — GPIO |
Ứng dụng tiêu biểu
PIC32MX450F256L-V/PT phù hợp cho 6 Áp dụngs: USB Audio Device Interface, Human-Machine Interface (HMI) with TFT Display, Industrial Control with Capacitive Touch, Embedded Connectivity (TCP/IP, USB, CAN), Low-Cost Data Logger, Point-of-Sale (POS) Terminal Peripheral.
USB Audio Device Interface
The PIC32MX450F256L-V/PT is an excellent fit for USB audio peripherals such as USB speakers, headsets, and digital audio interfaces. Its integrated USB 2.0 full-speed OTG controller handles USB audio class 1.0 device enumeration without an external PHY, while the two I2S/SPI modules stream stereo audio data to external DACs or codecs. With 256KB Flash and 64KB RAM, the MCU comfortably runs the Microchip Harmony USB audio stack, supports up to 24-bit/48kHz sample rates, and leaves headroom for additional DSP effects such as equalization or sample-rate conversion. The 80MHz M4K core provides more than enough MIPS for low-latency audio buffering and USB isochronous transfers. Designers should pair the MCU with a low-jitter 48MHz crystal reference to meet USB timing specifications.
Được đề xuất
Human-Machine Interface (HMI) with TFT Display
For HMI designs with small TFT or OLED displays, the PIC32MX450F256L-V/PT's Parallel Master Port (PMP) drives 8/16-bit parallel LCD interfaces at speeds sufficient for QVGA/WQVGA panels. The PIC32MX3/4 family's Peripheral Pin Select (PPS) remapping capability allows designers to assign PMP data lines to nearly any I/O, simplifying PCB routing around display connectors. With 256KB Flash, the MCU stores graphics assets, fonts, and Microchip's MPLAB Harmony Graphics Suite middleware, while 64KB RAM provides frame buffers for small displays. The CTMU peripheral enables capacitive touch buttons and sliders for integrated touch UI, reducing BOM cost by eliminating external touch controllers.
Được đề xuất
Industrial Control with Capacitive Touch
The PIC32MX450F256L-V/PT integrates Microchip's Charge Time Measurement Unit (CTMU), enabling robust capacitive touch sensing for industrial control panels, appliance interfaces, and rugged keypads. The -V/PT suffix extends the operating range to -40C to +105C, suitable for factory-floor equipment and outdoor installations. The 32-bit MIPS core executes PID control loops and Modbus RTU/TCP communication stacks simultaneously, while 256KB Flash accommodates protocol libraries plus custom application code. Industrial designers can use the on-chip 10-bit ADC for sensor inputs and the PWM/OC modules for motor or actuator control, all from a single chip.
Được đề xuất
Embedded Connectivity (TCP/IP, USB, CAN)
For embedded web servers, USB peripherals, or CAN-connected nodes, the PIC32MX450F256L-V/PT supplies ample peripherals and memory for protocol stacks. The integrated USB OTG controller enables device/host/OTG roles for dongles, and Microchip's free TCP/IP stack (with or without RTOS) fits comfortably in 256KB Flash. Designers can add CAN via external MCP2515 controllers or use the ECAN module on pin-compatible PIC32MX variants. The 100-pin TQFP exposes sufficient I/O for Ethernet MAC+PHY interfacing (e.g., with ENC28J60 or LAN8720) along with UART, SPI, and I2C channels for sensor and memory expansion.
Được đề xuất
Low-Cost Data Logger
The PIC32MX450F256L-V/PT serves as a controller core for portable data loggers used in environmental monitoring, asset tracking, or test equipment. With 256KB Flash for application code and 64KB RAM for buffering, the MCU can sample multiple sensor channels via its 10-bit ADC and store readings to external SD cards or serial Flash via SPI. The USB OTG controller enables direct file transfer to a host PC without specialized drivers, while the -V/PT temperature grade supports field deployment. Battery-backed RTC and low-power sleep modes extend operating life in remote, battery-powered installations.
Được đề xuất
Point-of-Sale (POS) Terminal Peripheral
In POS terminals and retail peripherals, the PIC32MX450F256L-V/PT provides USB host/device connectivity for barcode scanners, receipt printers, and customer displays. The two I2S/SPI modules support external audio prompts or beep generators, while the PMP can drive small status displays. With 256KB Flash and 64KB RAM, the MCU handles payment flow control, encryption acceleration libraries, and multiple USB endpoints simultaneously. The 100-pin TQFP and 2.3V-3.6V range simplify integration into existing 3.3V POS mainboards, and the -40C to +105C rating supports retail environments with variable thermal conditions.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX450F256L-V/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC32MX450F256L-I/PT | PIC32MX450F256LT-V/PT | PIC32MX450F256H-V/PT | PIC32MX350F256L-V/PT | PIC32MX370F512L-V/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 (PT) 12x12 mm | TQFP-100 (PT) 12x12 mm - same | TQFP-100 (PT) 12x12 mm - same | TQFP-100 (PT) 12x12 mm - same | TQFP-100 (PT) 12x12 mm - same | TQFP-100 (PT) 12x12 mm - same |
| Core | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Max Frequency | 80 MHz (120 MHz family max) | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 512 KB |
| RAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 128 KB |
| Operating Temperature | -40 C to +105 C (V) | -40 C to +85 C (I) | -40 C to +105 C (V) | -40 C to +105 C (V) | -40 C to +105 C (V) | -40 C to +105 C (V) |
| USB | USB 2.0 full-speed OTG | USB 2.0 full-speed OTG | USB 2.0 full-speed OTG | USB 2.0 full-speed OTG | USB 2.0 full-speed OTG | USB 2.0 full-speed OTG |
Bảo phân biệt quan trọng
- Industrial -40C to +105C temperature grade (vsPIC32MX450F256L-I/PT)
- PIC32MX450 family with CTMU and PMP (vsPIC32MX350F256L-V/PT)
- 256KB Flash and 64KB RAM balance (vsPIC32MX370F512L-V/PT)
- 100-pin TQFP exposes maximum I/O (vsPIC32MX450F256H-V/PT)
Ghi chú thiết kế
The PIC32MX450F256L-V/PT requires a stable 3.3V supply within 2.3V to 3.6V. Place 100nF decoupling capacitors close to every VDD pin (the device has multiple VDD pins on the 100-pin TQFP) and a bulk 10uF tantalum or ceramic capacitor on the main 3.3V rail. According to Microchip datasheet 61143H, the MCU has multiple VSS pins that should all be connected to a low-impedance ground plane for EMI and thermal performance. A power-on reset (POR) is integrated internally; no external reset IC is required.
Route the 48MHz USB reference clock trace as short as possible with a guard ground on both sides. The USB D+ and D- lines (RG2 and RG3) require 90-ohm differential impedance matching and should be routed parallel with no stubs. For PMP-driven TFT displays, group the parallel data lines (RD0-RD15) and control lines (RE0-RE7) together to minimize skew, and reserve a contiguous GPIO region via Peripheral Pin Select (PPS) to simplify firmware configuration.
Do not exceed 80MHz system clock on the -V/PT speed grade - higher frequencies require the -120/PT variant. Ensure the JTAG/ICD pins RB6 (PGC) and RB7 (PGD) are not loaded by external circuitry during debug; if used as GPIO, provide a way to disable the debugger. The CTMU peripheral requires careful PCB layout for capacitive touch - guard traces around touch electrodes should be tied to ground to suppress noise.
Estimated: At 80MHz with full peripheral activity, core current consumption is approximately 60-80mA from the 3.3V rail. The 100-pin TQFP package has a theta_JA of approximately 50 C/W (per Microchip package drawing), so full-power dissipation results in a 4-5 C rise above ambient - well within the -40C to +105C operating range. For USB applications with high bus activity, expect 20-30% higher current draw due to transceiver toggling.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free per Microchip packaging specifications. AEC-Q100 not applicable - this is a general-purpose MCU not marketed as automotive grade.
