PIC32MX450F256L-V/PT - 80MHz 32-bit MCU 256KB Flash 100-TQFP
MPN: PIC32MX450F256L-V/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.42 | $7.42 |
| 10 | $6.88 | $68.80 |
| 100 | $5.96 | $596.00 |
| 500 | $5.31 | $2,655.00 |
| 1,000 | $4.72 | $4,720.00 |
PIC32MX450F256L-V/PT Overview
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.
Drop-in alternatives for PIC32MX450F256L-V/PT — 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 PIC32MX450F256L-V/PT (same form factor and footprint) — differing in Package, Core Architecture, DMA Channels, ADC, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX450F256L-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX450F256LT-V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX450F256H-V/PT
✅ Drop-In✓ In Stock
$4.78 / Unit
View Datasheet →PIC32MX350F256L-V/PT
✅ Drop-In✓ In Stock
$5.45 / Unit
View Datasheet →PIC32MX370F512L-V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX460F512L-80V/PT
✅ Drop-In✓ In Stock
$9.8 / Unit
View Datasheet →PIC32MX450F256L-V/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Data Bus Width | 32 bit |
| Maximum Clock Frequency | 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 |
| Operating Temperature Range | -40 C to +105 C (V suffix) |
| Package | 100-pin TQFP (PT), 12x12 mm |
| Mounting Type | 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 |
| RoHS Status | Compliant |
PIC32MX450F256L-V/PT Pin Configuration
| Pin 1 | RG15 — General purpose I/O |
| Pin 2 | VDD — Digital supply voltage |
| Pin 3 | RA0 — Analog input / GPIO |
| Pin 4 | RA1 — Analog input / GPIO |
| Pin 5 | RA2 — Analog input / GPIO |
| Pin 6 | RA3 — Analog input / GPIO |
| Pin 7 | RA4 — Analog input / GPIO |
| Pin 8 | RA5 — Analog input / GPIO |
| Pin 9 | RB0 — GPIO |
| Pin 10 | RB1 — GPIO |
| Pin 11 | RB2 — GPIO |
| Pin 12 | RB3 — GPIO |
| Pin 13 | VSS — Ground |
| Pin 14 | RB4 — GPIO |
| Pin 15 | RB5 — GPIO |
| Pin 16 | RB6 — GPIO / ICD PGC |
| Pin 17 | RB7 — GPIO / ICD PGD |
| Pin 18 | RB8 — GPIO |
| Pin 19 | RB9 — GPIO |
| Pin 20 | RB10 — GPIO |
| Pin 21 | RB11 — GPIO |
| Pin 22 | VSS — Ground |
| Pin 23 | RB12 — GPIO |
| Pin 24 | RB13 — GPIO |
| Pin 25 | RB14 — GPIO |
| Pin 26 | RB15 — GPIO |
| Pin 27 | RC0 — GPIO |
| Pin 28 | RC1 — GPIO |
| Pin 29 | RC2 — GPIO |
| Pin 30 | VSS — Ground |
| Pin 31 | RC3 — GPIO |
| Pin 32 | RC4 — GPIO |
| Pin 33 | RC5 — GPIO |
| Pin 34 | RC6 — GPIO |
| Pin 35 | RC7 — GPIO |
| Pin 36 | RC8 — GPIO |
| Pin 37 | RC9 — GPIO |
| Pin 38 | VDD — Digital supply voltage |
| Pin 39 | RC10 — GPIO |
| Pin 40 | RC11 — GPIO |
| Pin 41 | RC12 — GPIO |
| Pin 42 | RC13 — GPIO |
| Pin 43 | RC14 — GPIO |
| Pin 44 | RC15 — GPIO |
| Pin 45 | VSS — Ground |
| Pin 46 | RD0 — GPIO / PMP |
| Pin 47 | RD1 — GPIO / PMP |
| Pin 48 | RD2 — GPIO / PMP |
| Pin 49 | RD3 — GPIO / PMP |
| Pin 50 | RD4 — GPIO / PMP |
| Pin 51 | RD5 — GPIO / PMP |
| Pin 52 | RD6 — GPIO / PMP |
| Pin 53 | RD7 — GPIO / PMP |
| Pin 54 | VSS — Ground |
| Pin 55 | RD8 — GPIO / PMP |
| Pin 56 | RD9 — GPIO / PMP |
| Pin 57 | RD10 — GPIO / PMP |
| Pin 58 | RD11 — GPIO / PMP |
| Pin 59 | RD12 — GPIO / PMP |
| Pin 60 | RD13 — GPIO / PMP |
| Pin 61 | RD14 — GPIO / PMP |
| Pin 62 | RD15 — GPIO / PMP |
| Pin 63 | VSS — Ground |
| Pin 64 | RE0 — GPIO / PMP |
| Pin 65 | RE1 — GPIO / PMP |
| Pin 66 | RE2 — GPIO / PMP |
| Pin 67 | RE3 — GPIO / PMP |
| Pin 68 | RE4 — GPIO / PMP |
| Pin 69 | RE5 — GPIO / PMP |
| Pin 70 | RE6 — GPIO / PMP |
| Pin 71 | RE7 — GPIO / PMP |
| Pin 72 | VDD — Digital supply voltage |
| Pin 73 | RF0 — GPIO |
| Pin 74 | RF1 — GPIO |
| Pin 75 | RF2 — GPIO |
| Pin 76 | RF3 — GPIO |
| Pin 77 | RF4 — GPIO |
| Pin 78 | RF5 — GPIO |
| Pin 79 | VSS — Ground |
| Pin 80 | RF6 — GPIO |
| Pin 81 | RF7 — GPIO |
| Pin 82 | RF8 — GPIO |
| Pin 83 | RF9 — GPIO |
| Pin 84 | RF10 — GPIO |
| Pin 85 | RF11 — GPIO |
| Pin 86 | RF12 — GPIO |
| Pin 87 | RF13 — GPIO |
| Pin 88 | VSS — Ground |
| Pin 89 | RG0 — GPIO |
| Pin 90 | RG1 — GPIO |
| Pin 91 | RG2 — GPIO / D+ (USB) |
| Pin 92 | RG3 — GPIO / D- (USB) |
| Pin 93 | RG6 — GPIO |
| Pin 94 | RG7 — GPIO |
| Pin 95 | RG8 — GPIO |
| Pin 96 | RG9 — GPIO |
| Pin 97 | VSS — Ground |
| Pin 98 | VDD — Digital supply voltage |
| Pin 99 | RG12 — GPIO |
| Pin 100 | RG14 — GPIO |
Typical Applications
PIC32MX450F256L-V/PT is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX450F256L-V/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- Industrial -40C to +105C temperature grade (vs PIC32MX450F256L-I/PT)
- PIC32MX450 family with CTMU and PMP (vs PIC32MX350F256L-V/PT)
- 256KB Flash and 64KB RAM balance (vs PIC32MX370F512L-V/PT)
- 100-pin TQFP exposes maximum I/O (vs PIC32MX450F256H-V/PT)
Design Notes
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.
Compliance Information
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.
