PIC32MX450F128L-V/PF - 80MHz 32-bit MCU 128KB Flash 100-TQFP | Microchip
MPN: PIC32MX450F128L-V/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.42 | $8.42 |
| 10 | $7.58 | $75.80 |
| 100 | $6.74 | $674.00 |
| 500 | $5.97 | $2,985.00 |
| 1,000 | $5.31 | $5,310.00 |
PIC32MX450F128L-V/PF Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash for code, SRAM for data), and a programmable peripheral set around an internal bus. The PIC32MX450 belongs to the broader PIC32 family of MIPS-based 32-bit microcontrollers, which sits within Microchip's MCU portfolio alongside PIC16, PIC18, PIC24/dsPIC, and SAM Cortex-M lines. The "MX" family specifically targets USB-enabled, audio/graphics/touch (HMI) applications with up to 512 KB Flash and 128 KB SRAM per device, making it well-suited for connected embedded designs that need deterministic real-time performance plus a USB device/host/OTG interface.
Key features of the PIC32MX450F128L-V/PF include up to five 16-bit timers, two analog comparators, two I2C and two SPI/I2S modules, 28 ADC channels (10-bit, 1 MSPS), a 5-bit DAC, and 84 GPIO-capable I/O lines through the PPS system. The -V speed grade specifies 80 MHz operation, while the -120 variant of the same die supports 120 MHz for performance-hungry designs. The part carries industrial-grade temperature qualification (V suffix in this MPN line typically denotes the 105C-rated operating range), and the /PF suffix denotes the 100-pin TQFP (14x14 mm) package with Pb-free / RoHS lead finish.
Typical applications for this part include USB Human Interface Devices (HID), audio playback and recording products with I2S codecs, low-cost graphics HMI panels using PMP to external LCD controllers, capacitive-touch control panels via CTMU, and connected sensor hubs that need USB device connectivity. The combination of USB OTG, I2S, and PMP makes it a particularly strong fit for consumer audio accessories and small HMI products.
When designing with this part, allocate decoupling capacitance (typically 100 nF plus 10 uF bulk) close to each VDD/AVDD pair, route the USB DP/DM lines as a 90 ohm differential pair with a stable ground reference, and configure the PLL and FRC postscaler carefully to hit the desired system clock while keeping USB's 48 MHz reference jitter within the USB 2.0 specification.
This page synthesizes distributor pricing, same-package drop-in alternatives within the PIC32MX family, and practical USB/audio/HMI design notes that go beyond the manufacturer datasheet to help embedded engineers select and source the right 100-TQFP variant for their application.
Drop-in alternatives for PIC32MX450F128L-V/PF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC32MX450F128L-V/PF (same form factor and footprint) — differing in ADC, Package, Core Architecture, Operating Temperature Range, Parallel Master Port (PMP).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX450F128L-120V/PF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX470F512L-V/PF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX430F064L-V/PF
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.75 / Unit
View Datasheet →PIC32MX370F512L-V/PF
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.85 / Unit
View Datasheet →PIC32MX270F512L-V/PF
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.1 / Unit
View Datasheet →PIC32MX450F128L-V/PF Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Bit Width | 32-bit |
| Maximum CPU Speed | 80 MHz |
| Flash Program Memory | 128 KB (128K x 8) |
| Operating Voltage Range | 2.3 V to 3.6 V |
| USB Interface | USB 2.0 Full-Speed OTG controller |
| SPI Modules | 2 (SPI/I2S) |
| I2C Modules | 2 |
| Analog Comparators | 2 |
| ADC | 10-bit, up to 28 channels, 1 MSPS |
| DAC | 1 x 5-bit |
| Charge Time Measurement Unit (CTMU) | Yes (capacitive touch support) |
| Parallel Master Port (PMP) | Yes (graphics interface) |
| Peripheral Pin Select (PPS) | Yes |
| Operating Temperature Range | -40 C to +105 C |
| Package | 100-pin TQFP (14 x 14 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead Finish | Pb-free / Matte Tin |
PIC32MX450F128L-V/PF 100-pin tqfp (14 x 14 mm) Pin Configuration Guide
Pin configuration for PIC32MX450F128L-V/PF (100-pin tqfp (14 x 14 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC32MX450F128L-V/PF.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX450F128L-V/PF is suitable for 6 applications: USB Audio Headset / USB Speaker, Capacitive-Touch HMI Control Panel, USB HID Peripherals (Keyboard / Mouse / Custom HID), PMP-Driven Graphics LCD Panel, USB Connectivity Dongle for Industrial Sensors, Connected Audio Recorder with USB Streaming.
USB Audio Headset / USB Speaker
The PIC32MX450F128L-V/PF fits USB audio headsets and speakers because it integrates a USB 2.0 Full-Speed OTG controller and two I2S/SPI modules in a single chip, eliminating the need for an external USB audio bridge IC. The 128 KB Flash holds the USB Audio Class 1.0 descriptor stack plus a small audio mixer; the 32 KB SRAM is sufficient for 16-bit 48 kHz stereo buffering. The 80 MHz CPU can run sample-rate conversion and basic DSP (volume, EQ) without overloading, and the 2.3V to 3.6V range lets the part run from a regulated USB 5V rail via a small LDO. The I2S bus drives external DACs like the TI PCM5102A or Cirrus CS4344 directly.
Recommended
Capacitive-Touch HMI Control Panel
The PIC32MX450F128L-V/PF suits capacitive-touch HMI panels because the integrated CTMU (Charge Time Measurement Unit) can measure capacitance on up to 28 channels with sub-pF resolution, enabling touch buttons, sliders, and proximity sensors without an external touch controller. The 100-TQFP package exposes enough GPIO via PPS to multiplex many touch electrodes and LEDs simultaneously. Combined with the Parallel Master Port (PMP) for driving an external LCD or OLED module, and USB for configuration or data logging, the part can replace a touchscreen MCU plus bridge combination in products like coffee machines, induction cooktops, and small industrial control panels.
Recommended
USB HID Peripherals (Keyboard / Mouse / Custom HID)
The PIC32MX450F128L-V/PF is a strong fit for USB Human Interface Devices because its USB OTG controller can enumerate as HID at Full-Speed (12 Mbps) with very little CPU overhead, freeing the 80 MHz MIPS M4K core for scan matrix processing, debounce logic, and macro computation. The 128 KB Flash is more than enough for a custom HID descriptor stack plus a small RGB lighting engine, and the CTMU can add capacitive-touch gestures without extra hardware. PPS lets designers route USB, I2C, and SPI to convenient pins, simplifying PCB layout. Operating temperature to 105C supports sealed industrial HID enclosures.
Recommended
PMP-Driven Graphics LCD Panel
The PIC32MX450F128L-V/PF works well as the host for small graphic LCDs because its Parallel Master Port (PMP) module directly drives 8-bit or 16-bit 8080/6800 parallel LCD interfaces up to LCD panel pixel-clock speeds, eliminating an external LCD controller. The 100-TQFP package exposes enough PMP data, address, and control lines plus a rich GPIO complement for backlight PWM, touch I2C, and a status LED. Combined with USB for firmware updates and content uploads, the part powers HMI panels for small appliances, white-goods displays, and instrument clusters. The -40C to +105C operating range handles outdoor or industrial cabinet temperatures.
Recommended
USB Connectivity Dongle for Industrial Sensors
The PIC32MX450F128L-V/PF fits USB-to-sensor bridging dongles because its USB OTG controller enumerates as CDC/ACM, vendor-class, or HID and its two I2C/SPI/I2S channels can talk to most external sensors at the same time. The 28-channel 10-bit ADC at 1 MSPS handles analog sensor readout directly without an external ADC. Operating from 2.3V to 3.6V lets the part run from a regulated USB 5V rail via a small LDO, and the industrial temperature range supports field-deployed sensor hubs. The CTMU also provides a simple 4-20 mA loop current measurement when paired with a sense resistor.
Recommended
Connected Audio Recorder with USB Streaming
The PIC32MX450F128L-V/PF supports connected audio recorders because its two I2S modules can simultaneously capture from an external microphone ADC (e.g., TI TLV320ADC3100 or Knowles SPH0645) and stream the data over USB to a host PC. The 80 MHz MIPS M4K core can run basic preprocessing such as noise gating and level compression at typical 48 kHz sample rates. The 128 KB Flash holds the USB Audio Class 1.0 input descriptor stack plus a small control interface; the CTMU can support capacitive-touch record/stop controls. Operating temperature to 105C supports portable outdoor recording use cases.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX450F128L-V/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX450F128L-120V/PF | PIC32MX470F512L-V/PF | PIC32MX430F064L-V/PF | PIC32MX370F512L-V/PF | PIC32MX270F512L-V/PF |
|---|---|---|---|---|---|---|
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Core | MIPS32 M4K @ 80 MHz | MIPS32 M4K @ 120 MHz | MIPS32 M4K @ 80 MHz | MIPS32 M4K @ 80 MHz | MIPS32 M4K @ 80 MHz | MIPS32 M4K @ 64 MHz |
| Flash | 128 KB | 128 KB | 512 KB | 64 KB | 512 KB | 512 KB |
| USB OTG | Yes (USB 2.0 Full-Speed) | Yes | Yes | Yes | No (non-USB variant) | Yes |
| I2S Modules | 2 | 2 | 2 | 2 | 2 | 2 |
| 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 |
| Operating Temperature | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C |
Key Differentiators
- Best balance of Flash, peripherals, and cost in 100-TQFP (vs PIC32MX430F064L-V/PF)
- USB OTG included at 80 MHz speed grade price point (vs PIC32MX370F512L-V/PF)
- Direct upgrade path to 120 MHz and 512 KB Flash on same footprint (vs PIC32MX450F128L-120V/PF and PIC32MX470F512L-V/PF)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to every VDD/AVDD pin pair on the PIC32MX450F128L-V/PF, and add a single shared 10 uF bulk capacitor near the MCU supply pin. The part's internal 1.8V core regulator requires adequate bulk capacitance on the VCAP pin (typically 4.7 uF to 10 uF) to remain stable under load transients - omitting this cap is the most common cause of PIC32 brown-out resets. Use a star-ground topology for the analog AVSS/AGND return path if ADC accuracy matters.
Route the USB DP/DM pair as a 90 ohm differential with no stubs, keep the pair length-matched to within 150 mil, and place the USBLC6-2SC6 ESD protection array within 3 mm of the USB connector. According to the Microchip USB design notes, the VBUS sense pin needs a 10 kohm pull-down if used in device-only mode. For I2S to external audio DACs, route the MCLK/BCLK/LRCK/DATA lines together as a matched bus with a ground reference on the side, and keep them away from switching power converter nodes to avoid sample jitter.
Estimated: configuring the PIC32MX450F128L-V/PF's PLL from the internal 8 MHz FRC oscillator to 80 MHz CPU clock typically requires a 20 MHz PLL input reference and an output divider of 1, but the exact values depend on the chosen peripheral clock tree. Always verify the USB's 48 MHz reference clock falls within +/- 0.25% accuracy as required by USB 2.0; otherwise enumeration failures result. Another common pitfall is forgetting to enable the JTAG port disable bit in DEVCFG0, which frees the JTAG pins for PPS remapping as GPIO.
The PIC32MX450F128L-V/PF in 100-TQFP has a typical theta_JA of approximately 40 C/W on a standard JEDEC 4-layer test PCB. At typical 3.3V supply and 80 MHz operation, the device dissipates roughly 90 mA x 3.3 V = 0.3 W, yielding a self-heating rise of approximately 12 C above ambient at 25 C - well within the 105 C industrial limit. For sealed enclosures with no airflow, derate the ambient by 5-10 C to ensure margin under worst-case load.
Compliance Information
RoHS and lead-free status confirmed by Microchip product page. This part is industrial-grade (-40C to +105C) but is not AEC-Q100 automotive qualified - for automotive applications choose the PIC32MX450F128L-V/PF variant with AEC-Q100 or an equivalent automotive grade. Halogen-free status not explicitly listed in the verified data.