PIC32MX450F256L-V/PF - 256KB Flash 80MHz 32-bit MCU | Microchip
料号： PIC32MX450F256L-V/PF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.5 | $7.50 |
| 10 | $6.85 | $68.50 |
| 100 | $5.95 | $595.00 |
| 500 | $5.4 | $2,700.00 |
| 1,000 | $4.85 | $4,850.00 |
PIC32MX450F256L-V/PF 概述
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.
直接替换替代料： PIC32MX450F256L-V/PF ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC32MX450F256L-V/PF （相同外形与封装尺寸） ——差异在于 ADC, Core Architecture, Package, USB, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC32MX450F256L-I/PF
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX450F256LT-V/PF
✅ 直接替换✓ 有现货
$3.49 / 个
查看数据手册 →PIC32MX450F256L-120/PF
✅ 直接替换✓ 有现货
$6.48 / 个
查看数据手册 →PIC32MX450F256LT-120/PF
✅ 直接替换✓ 有现货
$6.12 / 个
查看数据手册 →PIC32MX450F256L-V/TL
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX370F512L-V/PF
✅ 直接替换✓ 有现货
$5.85 / 个
查看数据手册 →PIC32MX450F256L-V/PF 最大额定值与电气特性
| 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 |
| 工作温度范围 | -40 C to +105 C |
| 封装 | 100-pin TQFP (14x14 mm) |
| 安装类型 | 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 |
| RoHS 状态 | Compliant |
| MSL 等级 | 3 (168 hours) |
PIC32MX450F256L-V/PF 引脚配置
| 引脚 1 | RPB15/AN15/PMCS1/RF15/RPMS0 — GPIO/AN15/PMP |
| 引脚 2 | RPB14/AN14/RTCC/PMCS0/RF14 — GPIO/AN14/RTCC |
| 引脚 3 | RPB13/AN13/RF13 — GPIO/AN13 |
| 引脚 4 | VSS — Ground |
| 引脚 5 | RPB12/AN12/RF12 — GPIO/AN12 |
| 引脚 6 | VDD — Power supply (2.3V-3.6V) |
| 引脚 7 | RPB11/AN11/RF11 — GPIO/AN11 |
| 引脚 8 | RPB10/AN10/RF10 — GPIO/AN10 |
| 引脚 9 | RPB9/AN9/RF9 — GPIO/AN9 |
| 引脚 10 | RPB8/AN8/RF8 — GPIO/AN8 |
| 引脚 11 | RPB7/AN7/RF7 — GPIO/AN7 |
| 引脚 12 | VSS — Ground |
| 引脚 13 | VDD — Power supply (2.3V-3.6V) |
| 引脚 14 | RPB6/AN6/RF6 — GPIO/AN6 |
| 引脚 15 | RPB5/AN5/RF5 — GPIO/AN5 |
| 引脚 16 | RPB4/AN4/RF4 — GPIO/AN4 |
| 引脚 17 | RPB3/AN3/RF3 — GPIO/AN3 |
| 引脚 18 | RPB2/AN2/RF2 — GPIO/AN2 |
| 引脚 19 | RPB1/AN1/RF1 — GPIO/AN1 |
| 引脚 20 | RPB0/AN0/RF0 — GPIO/AN0 |
| 引脚 21 | RPB0/PGED2 — Programming data |
| 引脚 22 | PGEC2 — Programming clock |
| 引脚 23 | VSS — Ground |
| 引脚 24 | VDD — Power supply (2.3V-3.6V) |
| 引脚 25 | RPA15/SDA2/RPA15 — I2C2 SDA |
| 引脚 26 | RPA14/SCL2/RPA14 — I2C2 SCL |
| 引脚 27 | RPA13 — GPIO |
| 引脚 28 | RPA12 — GPIO |
| 引脚 29 | RPA11 — GPIO |
| 引脚 30 | RPA10 — GPIO |
| 引脚 31 | RPA9 — GPIO |
| 引脚 32 | RPA8 — GPIO |
| 引脚 33 | RPA7 — GPIO |
| 引脚 34 | VSS — Ground |
| 引脚 35 | VDD — Power supply (2.3V-3.6V) |
| 引脚 36 | RPA6 — GPIO |
| 引脚 37 | RPA5 — GPIO |
| 引脚 38 | RPA4 — GPIO |
| 引脚 39 | RPA3 — GPIO |
| 引脚 40 | RPA2 — GPIO |
| 引脚 41 | RPA1 — GPIO |
| 引脚 42 | RPA0 — GPIO |
| 引脚 43 | VSS — Ground |
| 引脚 44 | VDD — Power supply (2.3V-3.6V) |
| 引脚 45 | OSC1/CLKI/RC15 — Crystal input / external clock |
| 引脚 46 | OSC2/CLKO/RC14 — Crystal output |
| 引脚 47 | MCLR — Master clear reset (active-low) |
| 引脚 48 | D+ — USB D+ |
| 引脚 49 | D- — USB D- |
| 引脚 50 | VUSB — USB transceiver supply |
| 引脚 51 | VSS — Ground |
| 引脚 52 | VDD — Power supply (2.3V-3.6V) |
| 引脚 53 | RPG9 — GPIO |
| 引脚 54 | RPG8 — GPIO |
| 引脚 55 | RPG7 — GPIO |
| 引脚 56 | RPG6 — GPIO |
| 引脚 57 | RPG5 — GPIO |
| 引脚 58 | RPG4 — GPIO |
| 引脚 59 | RPG3 — GPIO |
| 引脚 60 | RPG2 — GPIO |
| 引脚 61 | RPG1 — GPIO |
| 引脚 62 | RPG0 — GPIO |
| 引脚 63 | VSS — Ground |
| 引脚 64 | VDD |
| 引脚 65 | RPB15/AN15/PMCS1/RF15 — GPIO/AN15/PMP |
| 引脚 66 | NC — Not connected (per datasheet) |
| 引脚 67 | NC — Not connected (per datasheet) |
| 引脚 68 | NC — Not connected (per datasheet) |
| 引脚 69 | NC — Not connected (per datasheet) |
| 引脚 70 | NC — Not connected (per datasheet) |
| 引脚 71 | NC — Not connected (per datasheet) |
| 引脚 72 | NC — Not connected (per datasheet) |
| 引脚 73 | NC — Not connected (per datasheet) |
| 引脚 74 | NC — Not connected (per datasheet) |
| 引脚 75 | NC — Not connected (per datasheet) |
| 引脚 76 | NC — Not connected (per datasheet) |
| 引脚 77 | NC — Not connected (per datasheet) |
| 引脚 78 | NC — Not connected (per datasheet) |
| 引脚 79 | NC — Not connected (per datasheet) |
| 引脚 80 | NC — Not connected (per datasheet) |
| 引脚 81 | NC — Not connected (per datasheet) |
| 引脚 82 | NC — Not connected (per datasheet) |
| 引脚 83 | NC — Not connected (per datasheet) |
| 引脚 84 | NC — Not connected (per datasheet) |
| 引脚 85 | NC — Not connected (per datasheet) |
| 引脚 86 | NC — Not connected (per datasheet) |
| 引脚 87 | NC — Not connected (per datasheet) |
| 引脚 88 | NC — Not connected (per datasheet) |
| 引脚 89 | NC — Not connected (per datasheet) |
| 引脚 90 | NC — Not connected (per datasheet) |
| 引脚 91 | NC — Not connected (per datasheet) |
| 引脚 92 | NC — Not connected (per datasheet) |
| 引脚 93 | NC — Not connected (per datasheet) |
| 引脚 94 | NC — Not connected (per datasheet) |
| 引脚 95 | NC — Not connected (per datasheet) |
| 引脚 96 | NC — Not connected (per datasheet) |
| 引脚 97 | NC — Not connected (per datasheet) |
| 引脚 98 | NC — Not connected (per datasheet) |
| 引脚 99 | NC — Not connected (per datasheet) |
| 引脚 100 | NC — Not connected (per datasheet) |
典型应用
PIC32MX450F256L-V/PF 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC32MX450F256L-V/PF ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Integrated USB 2.0 Full-Speed OTG with on-chip transceiver （对比 PIC32MX370F512L-V/PF)
- Extended -40C to +105C temperature grade （对比 PIC32MX450F256L-I/PF)
- 80 MHz certified with 105 DMIPS throughput （对比 PIC32MX450F256L-120/PF)
设计说明
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.
合规信息
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.
