Guia completo do PIC32MX460F512L-80I/PT: Especificações, Pinagem, Alternativas e Fornecimento do MCU USB Microchip de 32 bits (2026)

What is the PIC32MX460F512L-80I/PT and where does it fit in Microchip's MCU lineup?

The PIC32MX460F512L-80I/PT is a Microchip Technology 32-bit microcontroller built on the MIPS32 M4K core, delivering 80 MHz of processing speed with 512 KB Flash program memory, 32 KB SRAM, integrated USB 2.0 Full-Speed On-The-Go, a 16-channel 10-bit ADC, 4-channel DMA, and 53 I/O pins in a 100-pin TQFP (12x12 mm) package operating from 2.3 V to 3.6 V across the -40°C to +85°C industrial temperature range. It is in active production lifecycle with 99,999 units stocked at XAIPART and ships in 1-piece MOQ, with verified pricing from $9.20 at qty 1 down to $6.05 at qty 1,000 (as of 2026-10-06). The part targets USB peripherals and HID devices, industrial control panels with graphical LCDs, USB mass storage data loggers, point-of-sale terminals, consumer audio equipment with USB input, and IoT edge devices.

Within Microchip's PIC32MX3xx/4xx/5xx/6xx/7xx family, this device occupies the mid-density Flash tier and shares the 100-pin TQFP footprint with the rest of the family, allowing migration up or down the product line without PCB rework. Engineers migrating from PIC24/dsPIC designs benefit from the 32-bit MIPS32 M4K core's 5-stage pipeline, hardware multiply/divide, and shadow register sets, plus Microchip's MPLAB X IDE and Harmony middleware ecosystem. Browse the PIC32MX460F512L-80I/PT product page for live stock, verified pricing tiers, and order placement.

How do you design in the PIC32MX460F512L-80I/PT?

Begin with the supply rail. The MCU requires 2.3 V to 3.6 V on every VDD pin (verified at pins 2, 15, 26, 34, 46, 56, 70, 80, 90), with matched VSS returns on pins 10, 14, 20, 25, 33, 45, 55, 61, 64, 69, 79, 89, and 99. Place a 10 µF bulk capacitor near the package plus 0.1 µF ceramic on each VDD/VSS pair to keep the PLL and USB transceiver stable. The analog VDD on pin 34 should be filtered separately from the digital rails through a ferrite bead to prevent ADC noise injection from switching I/O. The five-stage M4K pipeline and 80 MHz core clock draw modest current, but the integrated USB OTG transceiver adds 25 mA peak during packet transmission that the regulator must supply without sag.

Clock the M4K core from a primary crystal between OSC1 (pin 62) and OSC2 (pin 63), or feed an external CMOS clock into OSC1. The internal PLL multiplies the primary oscillator up to the 80 MHz core clock specified for the -80 speed grade. The MPLAB X IDE configures the PLL through configuration bits; the family datasheet (61143H) lists the supported crystal frequencies and PLL multiplier tables. For USB applications, the 48 MHz USB clock must derive from the same PLL chain, so the primary oscillator frequency should be selected to allow clean integer multiplication to both 80 MHz core and 48 MHz USB clocks.

Program and debug the device through ICSP using PGEC1 (pin 5) and PGED1 (pin 6), or through JTAG on alternate pins on the 100-pin package. The MPLAB ICD 4 and PICkit 4 programmers support both interfaces. For production programming, budget ICSP header placement on the PCB even if JTAG is the primary debug interface, because ICSP survives board revisions and field firmware updates without expensive programmers.

Route the integrated USB 2.0 Full-Speed On-The-Go controller to the USB connector with a 15 kΩ pull-down on D+ and D-. RF1 (pin 100) carries USB D-. The internal transceiver eliminates the external PHY that older PIC24 designs required, saving BOM cost and PCB area. The MPLAB Harmony framework provides ready-made USB stacks for CDC, HID, MSD, and vendor classes. The four dedicated DMA controllers can offload USB endpoint transfers, freeing the 80 MHz core for application logic.

Wire analog inputs to Port A (RA0-RA7, AN0-AN7) and Port B (RB0-RB7, AN8-AN15) for the 16-channel 10-bit ADC. The ADC converts up to 1 Msps with hardware sample-and-hold. Tie unused analog pins to ground through 10 kΩ to prevent leakage current into the ADC mux from affecting adjacent channel readings.

Configure the five 16-bit timers/counters, two UART, two SPI, and two I2C peripherals through the peripheral pin-select (PPS) mechanism on the RP0-RP15 pins. PPS lets you remap peripheral inputs and outputs to most general-purpose I/O, simplifying PCB layout when signal routing constraints change between board revisions. The peripheral pin select supports up to 16 remappable inputs and a similar count of remappable outputs across the available digital I/O.

The 12x12 mm 100-pin TQFP footprint with 0.4 mm pitch requires careful fanout to inner power planes. Use the family compatibility to keep options open for Flash-density migration: a board designed for the 100-pin TQFP can drop in the F256L (256 KB) or F512L (512 KB) variants without PCB changes.

Design-in takeaway: Anchor the design to 512 KB Flash and 32 KB SRAM for full USB stack headroom. The 80 MHz MIPS M4K with hardware multiply/divide and the 4-channel DMA offload keep the CPU available for application code while USB, ADC, and serial peripherals run in parallel.

What are the verified drop-in alternatives within the PIC32MX family?

Six drop-in alternatives exist within the PIC32MX family, all built on the same MIPS32 M4K 80 MHz core with 2.3 V to 3.6 V supply voltage. The verified alternatives from the product data block include:

Use PIC32MX460F512LT-80I/PT when the part will run on an SMT production line that prefers tape-and-reel packaging — same die, identical firmware image, identical electrical specs.

Use PIC32MX460F512L-80V/PT for automotive under-hood, outdoor industrial enclosures, or any application that demands -40°C to +105°C. Flash, RAM, USB, and peripheral count remain identical.

Use the PIC32MX360F512L-80I/PT for backward compatibility with legacy PIC32MX360 firmware. Same 512 KB Flash, 32 KB RAM, and 80 MHz, but lacks the USB OTG enhancements of the F460 silicon revision.

Use the PIC32MX460F256L-80I/PT for cost-down on smaller firmware images that outgrow the F128 variants but do not need 512 KB. RAM and peripheral count remain identical to the F512L.

Use the PIC32MX564F128H-I/PT for board-area-constrained designs. The 64-pin TQFP package, 128 KB Flash, and 16 KB RAM shrink the BOM, but it is not pin-compatible with the 100-pin family.

Use PIC32MX795F512L-80I/PT when Ethernet MAC or CAN connectivity is required. The 100-pin TQFP footprint is preserved, but firmware configuration changes are required.

Comparison takeaway: The PIC32MX460F512L-80I/PT is the optimal balance of code space (512 KB), RAM (32 KB), USB OTG, and industrial temperature range. For drop-in migrations, choose the -80V variant for extended temperature or the F256L for cost-down on smaller firmware. For second-source flexibility, validate firmware portability across the F460 and F795 variants.

What is the lifecycle and supply situation for the PIC32MX460F512L-80I/PT?

The PIC32MX460F512L-80I/PT is in active production lifecycle status, with 99,999 units stocked at XAIPART and a 1-piece minimum order quantity. Verified pricing scales from $9.20 at qty 1+, to $8.45 at qty 10+, $7.30 at qty 100+, $6.65 at qty 500+, and $6.05 at qty 1,000+ (as of 2026-10-06). Major distributors including DigiKey and Mouser list the part with immediate shipping stock, and factory-direct via Microchip Direct carries typical lead times of 4 to 8 weeks for high-volume orders above 10k units.

Because the part is in active production and used in long-lifecycle designs, allocation pressure is low. The RoHS-compliant lead-free TQFP package (PT suffix) satisfies current environmental compliance for commercial and industrial deployments in EU and North American markets. The part is verified at Octopart across 15 global resellers, confirming broad distribution coverage and pricing transparency.

Supply takeaway: Active production status with 99,999 units in stock means buyers can secure volumes without allocation risk. For high-volume orders above 10k units, request pricing and lead-time quotes from Microchip Direct in parallel with distributor orders to lock supply.

What trends should buyers and engineers watch for the PIC32MX460F512L-80I/PT?

Three trends shape sourcing and design decisions for this part:

1. Long-lifecycle industrial and consumer designs. The 80 MHz MIPS32 M4K core, 512 KB Flash, 32 KB SRAM, and integrated USB 2.0 Full-Speed OTG combination targets USB peripherals and HID devices, industrial control panels with graphical LCDs, USB mass storage data loggers, point-of-sale terminals, consumer audio equipment, and IoT edge devices. These applications typically run product lifecycles of 5 to 10 years, and the active production status of the PIC32MX460F512L-80I/PT supports that horizon without forced redesign.

2. Family migration paths inside the PIC32MX footprint. The 100-pin TQFP shared across the PIC32MX3xx/4xx/5xx/6xx/7xx family lets engineers migrate between Flash densities (128 KB, 256 KB, 512 KB) and feature mixes (USB OTG, Ethernet MAC, CAN) without PCB rework. Designers should plan firmware architecture to be portable across the F256L, F460, and F795 variants to maximize second-source flexibility and absorb memory-density changes late in the project.

3. Ecosystem maturity versus Cortex-M competition. The MPLAB X IDE, MPLAB Harmony framework, and PICkit 4 / MPLAB ICD 4 programmer ecosystem reduce firmware development risk for existing PIC32 shops. Educational platforms including the Microchip MA320002 PIM, MikroElektronika EasyPIC FUSION v7 MCUcard, and Olimex PIC32-MX460 reference board keep the part accessible to new engineers and labs, supporting continued demand for the device into 2026 and beyond.

Trend takeaway: Anchor designs to the verified 512 KB Flash, 32 KB SRAM, 80 MHz, USB 2.0 Full-Speed OTG, and 100-pin TQFP combination. Plan firmware portability across the PIC32MX family for second-source flexibility, and use the active production status and 99,999-unit stock position to negotiate long-term supply agreements.

For related Microchip MCU coverage, browse the XAIPART component catalog or read the XAIPART blog for parallel guides such as the PIC32MX340F512H-80I/MR Complete Guide and the PIC32MM0256GPM048-I/M4 Complete Guide.