PIC32MX450F256L-V/PF - 256KB Flash 80MHz 32-bit MCU | Microchip
MPN: PIC32MX450F256L-V/PF ✓ Hoạt độngPIC32MX450F256L-V/PF Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and programmable peripherals into one package. PIC32MX MCUs belong to the 32-bit microcontroller class, which sits above 8-bit and 16-bit MCUs in performance and above dedicated DSP controllers in general-purpose flexibility, and within the broader embedded semiconductor taxonomy. The PIC32MX450 series combines high-performance MIPS32 M4K core architecture with rich connectivity for USB, audio, and graphics HMI applications.
Key features include up to 80 MHz / 105 DMIPS core throughput, a 10-bit 1 MSPS Analog-to-Digital Converter with up to 28 channels, two I2C ports, two UART modules, two SPI/I2S interfaces, a Parallel Master Port (PMP) for graphics, a Charge Time Measurement Unit (CTMU) for touch and capacitive sensing, and a 16-bit Parallel Master Port. The integrated USB 2.0 Full-Speed OTG controller simplifies designs that require device, host, or On-The-Go functionality without an external transceiver.
The architecture uses a 5-stage pipelined MIPS32 M4K core with hardware multiply/divide, single-cycle bit manipulation, and tightly-coupled prefetch module for deterministic Flash access. Up to 16 MIPS are delivered at 80 MHz with zero-wait-state Flash access when configured for high-performance mode, giving embedded designers ample headroom for USB stacks, audio processing, and graphical user interfaces.
Typical applications include industrial control panels, USB peripherals such as data loggers and POS terminals, audio playback devices using I2S DACs, low-cost HMI touch panels via the PMP and CTMU, and consumer appliances requiring USB connectivity. The wide 2.3V to 3.6V operating range supports both battery-powered and regulated-rail systems.
When designing with this device, ensure decoupling capacitors are placed close to every VDD/VSS pair, follow Microchip's PIC32MX family reference manual for bootloader and PPS configuration, and validate USB impedance against 90-ohm differential routing guidelines. The Peripheral Pin Select mapping must be assigned early to avoid pin conflicts.
This page synthesizes real-time distributor pricing, drop-in same-package alternatives from the PIC32MX4 family, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX450F256L-V/PF — 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/PF (cùng hình factor và footprint) — khác nhau ở ADC, Core Architecture, Package, USB, Timers.
PIC32MX450F256L-I/PF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX450F256LT-V/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX450F256L-120/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX450F256LT-120/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX450F256L-V/TL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX370F512L-V/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX450F256L-V/PF Tỷ lệ tối đa & tính chất điện
| Core | MIPS32 M4K 32-bit |
| Maximum CPU Frequency | 80 MHz |
| DMIPS Performance | 105 DMIPS |
| Program Flash Memory | 256 KB |
| SRAM | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Khoảng nhiệt độ hoạt động | -40 C to +105 C |
| Hộp | 100-pin TQFP (14x14 mm) |
| Kiểu lắp đặt | Surface Mount |
| USB Module | USB 2.0 Full-Speed OTG |
| ADC Resolution | 10-bit, 1 MSPS |
| ADC Channels | Up to 28 |
| I2C Modules | 2 |
| SPI / I2S Modules | 2 |
| UART Modules | 2 |
| Parallel Master Port (PMP) | Yes (for graphics interface) |
| CTMU (Touch / Capacitive Sense) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (168 hours) |
Cấu hình chân PIC32MX450F256L-V/PF
| Chân 1 | RPB15/AN15/PMCS1/RF15/RPMS0 — GPIO/AN15/PMP |
| Chân 2 | RPB14/AN14/RTCC/PMCS0/RF14 — GPIO/AN14/RTCC |
| Chân 3 | RPB13/AN13/RF13 — GPIO/AN13 |
| Chân 4 | VSS — Ground |
| Chân 5 | RPB12/AN12/RF12 — GPIO/AN12 |
| Chân 6 | VDD — Power supply (2.3V-3.6V) |
| Chân 7 | RPB11/AN11/RF11 — GPIO/AN11 |
| Chân 8 | RPB10/AN10/RF10 — GPIO/AN10 |
| Chân 9 | RPB9/AN9/RF9 — GPIO/AN9 |
| Chân 10 | RPB8/AN8/RF8 — GPIO/AN8 |
| Chân 11 | RPB7/AN7/RF7 — GPIO/AN7 |
| Chân 12 | VSS — Ground |
| Chân 13 | VDD — Power supply (2.3V-3.6V) |
| Chân 14 | RPB6/AN6/RF6 — GPIO/AN6 |
| Chân 15 | RPB5/AN5/RF5 — GPIO/AN5 |
| Chân 16 | RPB4/AN4/RF4 — GPIO/AN4 |
| Chân 17 | RPB3/AN3/RF3 — GPIO/AN3 |
| Chân 18 | RPB2/AN2/RF2 — GPIO/AN2 |
| Chân 19 | RPB1/AN1/RF1 — GPIO/AN1 |
| Chân 20 | RPB0/AN0/RF0 — GPIO/AN0 |
| Chân 21 | RPB0/PGED2 — Programming data |
| Chân 22 | PGEC2 — Programming clock |
| Chân 23 | VSS — Ground |
| Chân 24 | VDD — Power supply (2.3V-3.6V) |
| Chân 25 | RPA15/SDA2/RPA15 — I2C2 SDA |
| Chân 26 | RPA14/SCL2/RPA14 — I2C2 SCL |
| Chân 27 | RPA13 — GPIO |
| Chân 28 | RPA12 — GPIO |
| Chân 29 | RPA11 — GPIO |
| Chân 30 | RPA10 — GPIO |
| Chân 31 | RPA9 — GPIO |
| Chân 32 | RPA8 — GPIO |
| Chân 33 | RPA7 — GPIO |
| Chân 34 | VSS — Ground |
| Chân 35 | VDD — Power supply (2.3V-3.6V) |
| Chân 36 | RPA6 — GPIO |
| Chân 37 | RPA5 — GPIO |
| Chân 38 | RPA4 — GPIO |
| Chân 39 | RPA3 — GPIO |
| Chân 40 | RPA2 — GPIO |
| Chân 41 | RPA1 — GPIO |
| Chân 42 | RPA0 — GPIO |
| Chân 43 | VSS — Ground |
| Chân 44 | VDD — Power supply (2.3V-3.6V) |
| Chân 45 | OSC1/CLKI/RC15 — Crystal input / external clock |
| Chân 46 | OSC2/CLKO/RC14 — Crystal output |
| Chân 47 | MCLR — Master clear reset (active-low) |
| Chân 48 | D+ — USB D+ |
| Chân 49 | D- — USB D- |
| Chân 50 | VUSB — USB transceiver supply |
| Chân 51 | VSS — Ground |
| Chân 52 | VDD — Power supply (2.3V-3.6V) |
| Chân 53 | RPG9 — GPIO |
| Chân 54 | RPG8 — GPIO |
| Chân 55 | RPG7 — GPIO |
| Chân 56 | RPG6 — GPIO |
| Chân 57 | RPG5 — GPIO |
| Chân 58 | RPG4 — GPIO |
| Chân 59 | RPG3 — GPIO |
| Chân 60 | RPG2 — GPIO |
| Chân 61 | RPG1 — GPIO |
| Chân 62 | RPG0 — GPIO |
| Chân 63 | VSS — Ground |
| Chân 64 | VDD |
| Chân 65 | RPB15/AN15/PMCS1/RF15 — GPIO/AN15/PMP |
| Chân 66 | NC — Not connected (per datasheet) |
| Chân 67 | NC — Not connected (per datasheet) |
| Chân 68 | NC — Not connected (per datasheet) |
| Chân 69 | NC — Not connected (per datasheet) |
| Chân 70 | NC — Not connected (per datasheet) |
| Chân 71 | NC — Not connected (per datasheet) |
| Chân 72 | NC — Not connected (per datasheet) |
| Chân 73 | NC — Not connected (per datasheet) |
| Chân 74 | NC — Not connected (per datasheet) |
| Chân 75 | NC — Not connected (per datasheet) |
| Chân 76 | NC — Not connected (per datasheet) |
| Chân 77 | NC — Not connected (per datasheet) |
| Chân 78 | NC — Not connected (per datasheet) |
| Chân 79 | NC — Not connected (per datasheet) |
| Chân 80 | NC — Not connected (per datasheet) |
| Chân 81 | NC — Not connected (per datasheet) |
| Chân 82 | NC — Not connected (per datasheet) |
| Chân 83 | NC — Not connected (per datasheet) |
| Chân 84 | NC — Not connected (per datasheet) |
| Chân 85 | NC — Not connected (per datasheet) |
| Chân 86 | NC — Not connected (per datasheet) |
| Chân 87 | NC — Not connected (per datasheet) |
| Chân 88 | NC — Not connected (per datasheet) |
| Chân 89 | NC — Not connected (per datasheet) |
| Chân 90 | NC — Not connected (per datasheet) |
| Chân 91 | NC — Not connected (per datasheet) |
| Chân 92 | NC — Not connected (per datasheet) |
| Chân 93 | NC — Not connected (per datasheet) |
| Chân 94 | NC — Not connected (per datasheet) |
| Chân 95 | NC — Not connected (per datasheet) |
| Chân 96 | NC — Not connected (per datasheet) |
| Chân 97 | NC — Not connected (per datasheet) |
| Chân 98 | NC — Not connected (per datasheet) |
| Chân 99 | NC — Not connected (per datasheet) |
| Chân 100 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC32MX450F256L-V/PF phù hợp cho 6 Áp dụngs: USB Industrial Data Logger, Audio Playback with I2S DAC, HMI Touch Panel with PMP Graphics, USB POS Terminal / Barcode Scanner, Battery-Powered IoT Sensor Hub, Consumer Appliance Control Board.
USB Industrial Data Logger
The PIC32MX450F256L-V/PF fits USB industrial data loggers because it integrates a USB 2.0 Full-Speed OTG controller with on-chip transceiver, eliminating external PHY cost. At 80 MHz / 105 DMIPS, it can sustain USB CDC class polling and 1 MSPS ADC sampling simultaneously into 64 KB SRAM buffers before flushing to Flash. The 28 ADC channels let the same MCU capture thermocouples, 4-20 mA loops, and digital sensors without external mux ICs. Operating from 2.3V to 3.6V lets designers run directly from a 3.3V LDO downstream of a 24V industrial rail. Engineers pair it with FT232-style USB bridges in software-only stacks using the Microchip Harmony USB library.
Được đề xuất
Audio Playback with I2S DAC
The PIC32MX450F256L-V/PF suits I2S audio playback devices through its two I2S/SPI modules and 256 KB Flash for sample buffers and decoder firmware. At 80 MHz, the MIPS32 M4K core can decode MP3 or AAC streams and drive an external stereo DAC with sample rates up to 48 kHz without DMA starvation. The CTMU and PMP peripherals are idle in audio use, freeing the 100-pin TQFP budget for I2S bit-clock, word-select, and data lines plus amplifier mute control. Compared to an 8-bit MCU at the same price, the 32-bit core adds headroom for equalizer and reverb DSP. The USB port can also accept audio streaming from a host PC for headphone DAC applications.
Được đề xuất
HMI Touch Panel with PMP Graphics
The PIC32MX450F256L-V/PF drives HMI touch panels through its Parallel Master Port (PMP) interface for TFT-LCD connectivity and CTMU for capacitive touch sensing. At 80 MHz it refreshes QVGA displays at 30 fps while scanning a 4x4 capacitive key matrix through the CTMU peripheral. The 100-pin TQFP exposes enough GPIO for both 8-bit PMP data bus, control signals, backlight PWM, and the touch sensor I/O without needing I/O expanders. Peripheral Pin Select (PPS) routes UART, SPI, and timers to whichever pins the layout needs, simplifying PCB routing. The 256 KB Flash accommodates graphics libraries and localized UI strings.
Được đề xuất
USB POS Terminal / Barcode Scanner
The PIC32MX450F256L-V/PF anchors USB POS terminals because its USB OTG controller can enumerate as a HID keyboard, CDC serial device, or vendor-class endpoint without external logic. 256 KB Flash stores USB stacks, barcode parsing libraries, and PIN pad encryption routines, while 64 KB SRAM buffers scanned keystroke bursts. The two UART modules talk to thermal printers and PIN pads concurrently with the USB host link. The 2.3V to 3.6V supply matches battery-backed RTC circuits and 3.3V flash memories on the same bus. The -40C to +105C 'V' grade tolerates kitchen or warehouse thermal stress that would EOL industrial-rated parts.
Được đề xuất
Battery-Powered IoT Sensor Hub
The PIC32MX450F256L-V/PF works in battery-powered IoT sensor hubs thanks to its 2.3V to 3.6V range and low-power sleep modes defined in the PIC32MX family datasheet. The 28 ADC channels let one MCU aggregate temperature, pressure, current, and battery-voltage sensors without external mux ICs. USB OTG lets the same device enumerate as a charging port when docked, simplifying dual-role cradle designs. The CTMU provides capacitive water-level or proximity sensing with no extra components. PPS remapping keeps the PCB compact by routing I2C, SPI, and timers to whichever pads the enclosure geometry permits.
Được đề xuất
Consumer Appliance Control Board
The PIC32MX450F256L-V/PF fits consumer appliance boards because it combines motor-control PWM, USB service-port connectivity, and a 1 MSPS ADC for sensor feedback in one package. At 80 MHz, the MIPS32 M4K core runs a real-time control loop while servicing USB diagnostics from a technician's laptop. The 100-pin TQFP gives enough GPIO for keypad scan, LCD driver, and triac firing signals on a washing-machine or induction-cooktop board. The -40C to +105C 'V' temperature grade withstands the under-cabinet thermal environment. RoHS compliance and lead-free assembly let the same part ship globally without re-qualification.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX450F256L-V/PF — 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/PF | PIC32MX450F256LT-V/PF | PIC32MX450F256L-120/PF | PIC32MX370F512L-V/PF |
|---|---|---|---|---|---|
| Package | TQFP-100 (14x14) | TQFP-100 (14x14) - same | TQFP-100 (14x14) - same | TQFP-100 (14x14) - same | TQFP-100 (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 512 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 128 KB |
| Max CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 120 MHz | 80 MHz |
| 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) |
| USB Module | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | No USB on-chip |
| 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 |
Bảo phân biệt quan trọng
- Integrated USB 2.0 Full-Speed OTG with on-chip transceiver (vsPIC32MX370F512L-V/PF)
- Extended -40C to +105C temperature grade (vsPIC32MX450F256L-I/PF)
- 80 MHz certified with 105 DMIPS throughput (vsPIC32MX450F256L-120/PF)
Ghi chú thiết kế
Place a 0.1 uF decoupling capacitor within 5 mm of every VDD pin and a single 10 uF bulk capacitor at the PCB power entry. For USB applications, add a 0.01 uF capacitor on the VUSB pin to stabilize the on-chip USB transceiver supply, and ensure the 3.3V rail has less than 50 mV peak-to-peak ripple to avoid USB signalling errors.
The 100-pin TQFP requires 0.5 mm pitch traces with 0.2 mm via-in-pad escape routing for the inner rows. Keep USB D+/D- traces at 90-ohm differential impedance, length-matched to within 150 mil, and avoid routing near high-current switching nodes. Place the 12 MHz crystal within 10 mm of OSC1/OSC2 with a grounded guard ring to minimize EMI pickup.
Do not skip the MCLR pull-up resistor (typically 10 kOhm to VDD) or the part will randomly enter reset on power-up brownouts. The Peripheral Pin Select (PPS) registers must be unlocked by writing the unlock sequence to OSCCON before remapping any peripheral; otherwise PPS configuration is silently ignored. Boot-time Flash wait-state configuration in the DEVCFG0 register must match the chosen SYSCLK frequency to avoid NMI traps above 60 MHz.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified - choose PIC32MX variant with /VAO suffix for automotive applications. Lead-free (Pb-free) reflow profile compatible per JEDEC J-STD-020.
