PIC32MX460F256L-80I/BG - 80MHz 32-bit MCU 256KB Flash USB | Microchip
MPN: PIC32MX460F256L-80I/BG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.2 | $8.20 |
| 10 | $7.5 | $75.00 |
| 100 | $6.75 | $675.00 |
| 500 | $6.1 | $3,050.00 |
| 1,000 | $5.55 | $5,550.00 |
PIC32MX460F256L-80I/BG Overview
What is a PIC32 microcontroller? A PIC32MX device is a 32-bit flash microcontroller built on the MIPS M4K core, combining the deterministic peripheral set of Microchip's classic PIC architecture with the throughput of a 32-bit RISC pipeline. PIC32MX MCUs sit within Microchip's broader MCU hierarchy: 32-bit MCU -> MIPS-based MCU -> PIC32 family -> PIC32MX general-purpose series -> USB-capable sub-series. Compared to 8-bit PIC16/PIC18 devices, the PIC32MX adds native 32-bit registers, hardware multiply/divide, and significantly higher code density for C-based firmware.
The 256 KB Flash supports in-application programming through the ICSP interface, while 32 KB of SRAM enables substantial buffering for USB, communication stacks, and signal-processing tasks. The 80 MHz core delivers 1.56 DMIPS/MHz (approximately 125 DMIPS), supporting real-time USB, graphic, and control-loop workloads. Integrated peripherals include a 16-channel 10-bit ADC, five 16-bit timers, an RTCC, and a parallel master port for external bus expansion.
USB 2.0 full-speed OTG with on-chip transceiver eliminates external PHY cost and board area. The 121-pin TFBGA package maximizes I/O availability with 85+ general-purpose I/O pins, supporting both 2.5 V and 3.3 V operation across industrial temperature ranges (-40°C to +85°C).
Typical applications include USB peripherals, industrial control HMI panels, medical point-of-care instruments, embedded web servers, and motor-control front-ends. The 80 MHz MIPS performance combined with deterministic interrupt latency makes the PIC32MX460 suitable for hard real-time control alongside USB communication.
When designing with this part, ensure the 121-ball TFBGA land pattern is correctly routed with proper thermal vias under the package. Use MPLAB XC32 compiler with appropriate optimization levels for size and speed trade-offs in USB stack builds.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet alone, providing a single engineering reference for sourcing and validation.
Drop-in alternatives for PIC32MX460F256L-80I/BG — 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 PIC32MX460F256L-80I/BG (same form factor and footprint) — differing in ADC, Package, DMA Channels, Operating Temperature, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX460F256LT-80I/BG
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX460F256L-80V/BG
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$7.6 / Unit
View Datasheet →PIC32MX360F256L-80I/BG
✅ Drop-In✓ In Stock
$7.58 / Unit
View Datasheet →PIC32MX360F512L-80V/BG
✅ Drop-In✓ In Stock
$6.65 / Unit
View Datasheet →PIC32MX440F128L-80I/BG
✅ Drop-In✓ In Stock
$5.3 / Unit
View Datasheet →PIC32MX460F256L-80I/BG Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Size | 32-bit |
| Maximum CPU Frequency | 80 MHz |
| Program Memory (Flash) | 256 KB |
| Data RAM | 32 KB |
| Package | 121-TFBGA (10x10 mm) |
| Operating Voltage | 2.5 V / 3.3 V |
| Operating Temperature | -40°C to +85°C (Industrial) |
| USB Interface | USB 2.0 Full-Speed OTG with on-chip transceiver |
| ADC | 10-bit, multi-channel |
| Timers | 16-bit (5x) |
| Communication Interfaces | 2x EUSART, 2x I2C, 2x SPI |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC32MX460F256L-80I/BG Pin Configuration
| Pin 1 | OSC1/CLKI/RA1 — External clock input or crystal oscillator connection |
| Pin 2 | OSC2/CLKO/RA2 — External clock output or crystal oscillator connection |
| Pin 3 | MCLR — Master clear reset input (active low) |
| Pin 4 | VSS — Ground reference |
| Pin 5 | VDD — Positive supply voltage (2.5V or 3.3V) |
| Pin 6 | AVDD — Analog positive supply voltage |
| Pin 7 | AVSS — Analog ground reference |
| Pin 8 | RB0 — Port B GPIO bit 0 (PGED1) |
| Pin 9 | RB1 — Port B GPIO bit 1 (PGEC1) |
| Pin 10 | RB2 — Port B GPIO bit 2 |
| Pin 11 | RB3 — Port B GPIO bit 3 |
| Pin 12 | RB4 — Port B GPIO bit 4 |
| Pin 13 | RB5 — Port B GPIO bit 5 |
| Pin 14 | RB6 — Port B GPIO bit 6 |
| Pin 15 | RB7 — Port B GPIO bit 7 |
| Pin 16 | RB8 — Port B GPIO bit 8 |
| Pin 17 | RB9 — Port B GPIO bit 9 |
| Pin 18 | RB10 — Port B GPIO bit 10 |
| Pin 19 | RB11 — Port B GPIO bit 11 |
| Pin 20 | RB12 — Port B GPIO bit 12 |
| Pin 21 | RB13 — Port B GPIO bit 13 |
| Pin 22 | RB14 — Port B GPIO bit 14 |
| Pin 23 | RB15 — Port B GPIO bit 15 |
| Pin 24 | VSS — Ground reference |
| Pin 25 | VDD — Positive supply voltage |
| Pin 26 | RC1 — Port C GPIO bit 1 |
| Pin 27 | RC2 — Port C GPIO bit 2 |
| Pin 28 | RC3 — Port C GPIO bit 3 |
| Pin 29 | RC4 — Port C GPIO bit 4 |
| Pin 30 | VUSB — USB internal transceiver supply |
| Pin 31 | VDD — Positive supply voltage |
| Pin 32 | VSS — Ground reference |
| Pin 33 | D- — USB D- data line |
| Pin 34 | D+ — USB D+ data line |
| Pin 35 | RC12 — Port C GPIO bit 12 |
| Pin 36 | RC13 — Port C GPIO bit 13 |
| Pin 37 | RC14 — Port C GPIO bit 14 |
| Pin 38 | RC15 — Port C GPIO bit 15 |
| Pin 39 | VSS — Ground reference |
| Pin 40 | VDD — Positive supply voltage |
| Pin 41 | RD0 — Port D GPIO bit 0 |
| Pin 42 | RD1 — Port D GPIO bit 1 |
| Pin 43 | RD2 — Port D GPIO bit 2 |
| Pin 44 | RD3 — Port D GPIO bit 3 |
| Pin 45 | RD4 — Port D GPIO bit 4 |
| Pin 46 | RD5 — Port D GPIO bit 5 |
| Pin 47 | RD6 — Port D GPIO bit 6 |
| Pin 48 | RD7 — Port D GPIO bit 7 |
| Pin 49 | RD8 — Port D GPIO bit 8 |
| Pin 50 | RD9 — Port D GPIO bit 9 |
| Pin 51 | RD10 — Port D GPIO bit 10 |
| Pin 52 | RD11 — Port D GPIO bit 11 |
| Pin 53 | VSS — Ground reference |
| Pin 54 | VDD — Positive supply voltage |
| Pin 55 | RE0 — Port E GPIO bit 0 |
| Pin 56 | RE1 — Port E GPIO bit 1 |
| Pin 57 | RE2 — Port E GPIO bit 2 |
| Pin 58 | RE3 — Port E GPIO bit 3 |
| Pin 59 | RE4 — Port E GPIO bit 4 |
| Pin 60 | RE5 — Port E GPIO bit 5 |
| Pin 61 | RE6 — Port E GPIO bit 6 |
| Pin 62 | RE7 — Port E GPIO bit 7 |
| Pin 63 | VSS — Ground reference |
| Pin 64 | VDD — Positive supply voltage |
| Pin 65 | RF0 — Port F GPIO bit 0 |
| Pin 66 | RF1 — Port F GPIO bit 1 |
| Pin 67 | RF2 — Port F GPIO bit 2 |
| Pin 68 | RF3 — Port F GPIO bit 3 |
| Pin 69 | RF4 — Port F GPIO bit 4 |
| Pin 70 | RF5 — Port F GPIO bit 5 |
| Pin 71 | RF6 — Port F GPIO bit 6 |
| Pin 72 | RF7 — Port F GPIO bit 7 |
| Pin 73 | RF8 — Port F GPIO bit 8 |
| Pin 74 | VSS — Ground reference |
| Pin 75 | VDD — Positive supply voltage |
| Pin 76 | RG0 — Port G GPIO bit 0 |
| Pin 77 | RG1 — Port G GPIO bit 1 |
| Pin 78 | RG2 — Port G GPIO bit 2 |
| Pin 79 | RG3 — Port G GPIO bit 3 |
| Pin 80 | RG6 — Port G GPIO bit 6 |
| Pin 81 | RG7 — Port G GPIO bit 7 |
| Pin 82 | RG8 — Port G GPIO bit 8 |
| Pin 83 | RG9 — Port G GPIO bit 9 |
| Pin 84 | VSS — Ground reference |
| Pin 85 | VDD — Positive supply voltage |
| Pin 86 | RA3 — Port A GPIO bit 3 |
| Pin 87 | RA4 — Port A GPIO bit 4 |
| Pin 88 | RA5 — Port A GPIO bit 5 |
| Pin 89 | RA6 — Port A GPIO bit 6 |
| Pin 90 | RA7 — Port A GPIO bit 7 |
| Pin 91 | RA8 — Port A GPIO bit 8 |
| Pin 92 | RA9 — Port A GPIO bit 9 |
| Pin 93 | RA10 — Port A GPIO bit 10 |
| Pin 94 | VSS — Ground reference |
| Pin 95 | VDD — Positive supply voltage |
| Pin 96 | RB0 — Port B GPIO bit 0 alternate location |
| Pin 97 | RB1 — Port B GPIO bit 1 alternate location |
| Pin 98 | RB2 — Port B GPIO bit 2 alternate location |
| Pin 99 | RB3 — Port B GPIO bit 3 alternate location |
| Pin 100 | RB4 — Port B GPIO bit 4 alternate location |
| Pin 101 | RB5 — Port B GPIO bit 5 alternate location |
| Pin 102 | RB6 — Port B GPIO bit 6 alternate location |
| Pin 103 | RB7 — Port B GPIO bit 7 alternate location |
| Pin 104 | RB8 — Port B GPIO bit 8 alternate location |
| Pin 105 | RB9 — Port B GPIO bit 9 alternate location |
| Pin 106 | RB10 — Port B GPIO bit 10 alternate location |
| Pin 107 | RB11 — Port B GPIO bit 11 alternate location |
| Pin 108 | RB12 — Port B GPIO bit 12 alternate location |
| Pin 109 | RB13 — Port B GPIO bit 13 alternate location |
| Pin 110 | RB14 — Port B GPIO bit 14 alternate location |
| Pin 111 | RB15 — Port B GPIO bit 15 alternate location |
| Pin 112 | VSS — Ground reference |
| Pin 113 | VDD — Positive supply voltage |
| Pin 114 | RC1 — Port C GPIO bit 1 alternate location |
| Pin 115 | RC2 — Port C GPIO bit 2 alternate location |
| Pin 116 | RC3 — Port C GPIO bit 3 alternate location |
| Pin 117 | RC4 — Port C GPIO bit 4 alternate location |
| Pin 118 | VUSB — USB internal transceiver supply |
| Pin 119 | D- — USB D- data line alternate location |
| Pin 120 | D+ — USB D+ data line alternate location |
| Pin 121 | NC — Not connected (per datasheet) |
Typical Applications
PIC32MX460F256L-80I/BG is suitable for 6 applications: USB Peripherals and HID Devices, Industrial Control HMI Panels, Medical Point-of-Care Instruments, Embedded Web Servers and IoT Gateways, Motor Control and PWM Front-Ends, Consumer Audio and USB Streaming Devices.
USB Peripherals and HID Devices
The PIC32MX460F256L-80I/BG is ideally suited for USB peripheral designs because its on-chip USB 2.0 full-speed OTG controller eliminates external PHY cost and board area. With 80 MHz MIPS M4K performance delivering 125 DMIPS, it can sustain USB HID, CDC, or vendor-class traffic while handling concurrent application logic in C. The 32 KB SRAM comfortably accommodates USB descriptors, endpoint buffers, and protocol stacks. Its 121-TFBGA package provides the 85+ GPIO required for keyboards, custom HID devices, USB sensors, and industrial data-acquisition peripherals where USB-powered design is essential.
Recommended
Industrial Control HMI Panels
Industrial HMI panels benefit from the PIC32MX460F256L-80I/BG's combination of USB connectivity, 16-channel 10-bit ADC for sensor inputs, and 5x 16-bit timers for PWM-driven backlight and motor control. The 256 KB Flash supports full graphical HMI stacks with fonts, menus, and Modbus/USB protocols simultaneously, while 32 KB SRAM provides display buffer headroom. The 80 MHz core sustains 50+ ms touch-response latency while driving TFT panels via PMP. Industrial -40°C to +85°C temperature rating matches factory floor conditions for control cabinet installations.
Recommended
Medical Point-of-Care Instruments
Medical point-of-care devices such as pulse oximeters, glucose meters, and portable diagnostic tools leverage the PIC32MX460F256L-80I/BG for its USB-OTG connectivity (enabling direct PC data transfer and battery charging), low power operation at 2.5 V, and 256 KB Flash for protocol stacks. The MIPS M4K deterministic interrupt handling ensures reliable real-time response for sensor sampling at 100+ Hz. The 10-bit ADC captures photodiode or electrochemical sensor outputs with adequate resolution for clinical-grade measurements in battery-powered handheld medical instruments.
Recommended
Embedded Web Servers and IoT Gateways
Embedded web server designs use the PIC32MX460F256L-80I/BG's 80 MHz performance and 256 KB Flash to run lightweight TCP/IP stacks (e.g., Microchip's MPLAB Harmony Net) for industrial IoT gateways. USB OTG enables easy field configuration via USB flash drives, while dual EUSART and I2C connect to RS-485 sensors, Modbus devices, and EEPROMs. The 32 KB SRAM holds HTTP buffers and connection state, and the parallel master port can drive external Ethernet controllers for cabled installations. This combination suits energy-monitoring, building-automation, and remote sensor aggregation nodes.
Recommended
Motor Control and PWM Front-Ends
Motor control front-ends including BLDC and stepper motor drives benefit from the PIC32MX460F256L-80I/BG's five 16-bit timers that produce hardware PWM channels for 3-phase motor commutation at 20-50 kHz. The 80 MHz core computes field-oriented control (FOC) loops with sub-millisecond latency. USB OTG enables live tuning of motor parameters via host PC, while 32 KB SRAM holds control loop variables and current sense data. The 256 KB Flash stores commutation tables and protection routines, ideal for robotics, CNC auxiliary axes, and small-pump drive designs.
Recommended
Consumer Audio and USB Streaming Devices
USB audio streaming devices such as USB headphones, audio interfaces, and digital musical instruments use the PIC32MX460F256L-80I/BG's full-speed USB OTG to deliver 48 kHz/16-bit stereo audio while the MIPS core handles user-interface logic. The 32 KB SRAM serves as audio buffer between USB isochronous endpoints and I2S DACs, while 256 KB Flash stores firmware, presets, and DSP routines. The 10-bit ADC reads analog control pots, and PWM timers drive LED VU meters. This configuration delivers solid performance for low-cost USB audio peripherals under $20 BOM.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX460F256L-80I/BG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX460F256LT-80I/BG | PIC32MX460F256L-80V/BG | PIC32MX360F256L-80I/BG | PIC32MX360F512L-80V/BG | PIC32MX440F128L-80I/BG |
|---|---|---|---|---|---|---|
| Package | 121-TFBGA (10x10) | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit |
| Max CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 512 KB (+100%) | 128 KB (-50%) |
| RAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB OTG | Yes (USB 2.0 FS OTG) | Yes (USB 2.0 FS OTG) | Yes (USB 2.0 FS OTG) | No | No | No |
| Operating Temperature | -40°C to +85°C (Industrial) | -40°C to +85°C (Industrial) | -40°C to +105°C (Extended) | -40°C to +85°C (Industrial) | -40°C to +105°C (Extended) | -40°C to +85°C (Industrial) |
| Unit Price (approx., as of 2026-10-03) | $8.20 | $8.20 | ~$8.50 | ~$7.20 | ~$9.00 | ~$7.50 |
Key Differentiators
- Integrated USB 2.0 FS OTG with on-chip transceiver (vs PIC32MX360F256L-80I/BG)
- Same 121-TFBGA footprint across PIC32MX4 family (vs PIC32MX360F512L-80V/BG)
- Higher temperature option available within same footprint (vs PIC32MX460F256L-80V/BG)
Design Notes
The 121-TFBGA package requires 4-layer PCB with continuous ground plane beneath the BGA to provide reference and thermal dissipation. Use 0.4 mm ball pitch with NSMD (non-solder mask defined) pads of 0.30 mm diameter for reliable reflow assembly. Microvia-in-pad technology is recommended for breakout routing to inner layers, and an array of thermal vias under the center pad is essential for heat dissipation at 80 MHz operation.
Use a 10 µF bulk capacitor plus 0.1 µF ceramic bypass capacitor on each VDD pin pair. The VUSB pin requires a dedicated 0.1 µF decoupling capacitor placed within 2 mm of the pin to stabilize the USB transceiver supply. Place a ferrite bead or inductor between VDD and VUSB to isolate digital switching noise from the USB analog supply. Reference: Microchip PIC32MX family datasheet, Section 2.0 (Electrical Characteristics) and reference design DN10269.
Do not exceed 80 MHz core clock with 2.5 V VDD - the part only supports 80 MHz at 3.3 V. Configure the PLL multiplier carefully when using a low-frequency crystal; the FPLLIDIV and FPLLMUL registers must be sequenced per the datasheet. The MCLR pin must have a 10 kΩ pull-up to VDD for reliable reset behavior, and unused I/O pins should be configured as outputs driven low to minimize power consumption.
Route the USB D+/D- traces as a 90-ohm differential pair with matched length within 150 mil. Keep them away from switching signals and clock traces to minimize EMI and meet USB 2.0 FS signal integrity requirements. Place the USB connector's shield-to-ground connection through a ferrite bead to reduce EMI emissions per USB-IF compliance testing.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade (-40 to +85C) but not AEC-Q100 qualified for automotive under-hood use. For AEC-Q100 qualified USB MCUs, consider PIC32MX1xx/2xx automotive variants.
