PIC32MX460F256L-80V/BG - 80MHz 32-bit MCU, 256KB Flash, USB-OTG | Microchip
MPN: PIC32MX460F256L-80V/BG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.5 | $11.50 |
| 10 | $10.62 | $106.20 |
| 100 | $9.45 | $945.00 |
| 500 | $8.4 | $4,200.00 |
| 1,000 | $7.6 | $7,600.00 |
PIC32MX460F256L-80V/BG Overview
What is a 32-bit MCU? A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, data RAM, and a rich set of peripherals. The PIC32 family represents Microchip's 32-bit extension of the classic PIC architecture, using the industry-standard MIPS instruction set rather than the proprietary 16-bit PIC ISA, which gives it direct C-compiler compatibility, larger linear address space, and competitive MIPS-per-MHz efficiency for embedded control and connectivity applications.
Key features of the PIC32MX460F256L-80V/BG include a 32-bit MIPS M4K core with hardware multiply/divide and single-cycle MAC, 16-channel 10-bit ADC, four DMA channels, 5x 16-bit timers, two UART, two SPI, two I2C, and full-speed USB-OTG. The -80V speed grade denotes 80MHz operation over the industrial 2.3V to 3.6V supply range, while the BG suffix identifies the 121-ball TFBGA (10x10 mm) package with industrial operating temperature.
Typical applications include USB peripherals (HID, CDC, mass storage), embedded web servers and IoT gateways, industrial control and HMI panels, consumer audio devices, and portable data-loggers. The combination of USB-OTG, generous RAM (32KB), and 80MHz throughput makes this part well-suited for full-speed USB device, host, or dual-role designs.
When designing with this device, allocate PCB fan-out for the 121-ball BGA using 0.8mm-pitch escape routing and follow Microchip's reference design for USB impedance (90 ohm differential). Use the MPLAB Harmony framework or legacy MLA stack for USB stack, and choose a temperature grade matching the deployment environment (-40C to +105C industrial).
Drop-in alternatives for PIC32MX460F256L-80V/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-80V/BG (same form factor and footprint) — differing in Package, ADC, Timers, Core Architecture, USB Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX460F256LT-80V/BG
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View Datasheet →PIC32MX460F256L-80I/BG
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View Datasheet →PIC32MX460F512L-80V/BG
✅ Drop-In✓ In Stock
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View Datasheet →PIC32MX460F256LT-80I/BG
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX360F512L-80V/BG
✅ Drop-In✓ In Stock
$6.65 / Unit
View Datasheet →PIC32MX360F256L-80V/BG
✅ Drop-In✓ In Stock
$6.4 / Unit
View Datasheet →PIC32MX460F256L-80V/BG Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Frequency | 80 MHz |
| DMIPS Performance | 105 DMIPS |
| Flash Program Memory | 256 KB |
| SRAM Data Memory | 32 KB |
| Supply Voltage Range | 2.3 V to 3.6 V |
| USB Interface | USB 2.0 Full-Speed OTG with integrated PHY and dedicated DMA |
| ADC | 10-bit, 16 channels, 1 Msps |
| DMA Channels | 4 channels |
| Timers | 5 x 16-bit |
| UART / SPI / I2C | 2 / 2 / 2 |
| Package | 121-pin TFBGA (BG), 10x10 mm, 0.8 mm pitch |
| Operating Temperature | -40 C to +105 C (industrial, V grade) |
| Instruction Set Extensions | MIPS16e for up to 40% code compression |
| Multiply/Divide Unit | 32x32-bit hardware multiply, hardware divide, single-cycle MAC |
| Mounting Type | Surface Mount (BGA) |
| RoHS Status | Compliant (per manufacturer product page) |
PIC32MX460F256L-80V/BG Pin Configuration
| Pin A1 | RG15 — General purpose I/O / UART2 CTS |
| Pin A2 | VDD — Supply voltage |
| Pin A3 | RG6 — General purpose I/O |
| Pin A4 | RG7 — General purpose I/O |
| Pin A5 | RG8 — General purpose I/O |
| Pin A6 | RG9 — General purpose I/O |
| Pin A7 | VSS — Ground |
| Pin A8 | RA0 — General purpose I/O |
| Pin A9 | RA1 — General purpose I/O |
| Pin A10 | RA2 — General purpose I/O |
| Pin A11 | RA3 — General purpose I/O |
| Pin B1 | RG14 — General purpose I/O |
| Pin B2 | RG13 — General purpose I/O |
| Pin B3 | RG12 — General purpose I/O |
| Pin B4 | VDD — Supply voltage |
| Pin B5 | RF4 — General purpose I/O |
| Pin B6 | RF5 — General purpose I/O |
| Pin B7 | RF3 — General purpose I/O |
| Pin B8 | RF2 — General purpose I/O |
| Pin B9 | RF6 — General purpose I/O |
| Pin B10 | RF7 — General purpose I/O |
| Pin B11 | RF8 — General purpose I/O |
| Pin C1 | VSS — Ground |
| Pin C2 | RG0 — General purpose I/O |
| Pin C3 | RG1 — General purpose I/O |
| Pin C4 | RG2 — General purpose I/O |
| Pin C5 | RG3 — General purpose I/O |
| Pin C6 | VBUS — USB VBUS detect |
| Pin C7 | USBID — USB OTG ID pin |
| Pin C8 | D- — USB D- differential data line |
| Pin C9 | D+ — USB D+ differential data line |
| Pin C10 | VUSB — USB transceiver supply (3.3V) |
| Pin C11 | VSS — Ground |
| Pin D1 | RD8 — General purpose I/O |
| Pin D2 | RD9 — General purpose I/O |
| Pin D3 | RD10 — General purpose I/O |
| Pin D4 | RD11 — General purpose I/O |
| Pin D5 | RD0 — General purpose I/O |
| Pin D6 | RD1 — General purpose I/O |
| Pin D7 | RD2 — General purpose I/O |
| Pin D8 | RD3 — General purpose I/O |
| Pin D9 | RD4 — General purpose I/O |
| Pin D10 | RD5 — General purpose I/O |
| Pin D11 | RD6 — General purpose I/O |
| Pin E1 | RD7 — General purpose I/O |
| Pin E2 | RC1 — General purpose I/O |
| Pin E3 | RC2 — General purpose I/O |
| Pin E4 | RC3 — General purpose I/O |
| Pin E5 | RC4 — General purpose I/O |
| Pin E6 | VDD — Supply voltage |
| Pin E7 | VSS — Ground |
| Pin E8 | RF0 — General purpose I/O |
| Pin E9 | RF1 — General purpose I/O |
| Pin E10 | RE0 — General purpose I/O |
| Pin E11 | RE1 — General purpose I/O |
| Pin F1 | RE2 — General purpose I/O |
| Pin F2 | RE3 — General purpose I/O |
| Pin F3 | RE4 — General purpose I/O |
| Pin F4 | RE5 — General purpose I/O |
| Pin F5 | RE6 — General purpose I/O |
| Pin F6 | RE7 — General purpose I/O |
| Pin F7 | RG4 — General purpose I/O |
| Pin F8 | RG5 — General purpose I/O |
| Pin F9 | AVDD — Analog supply voltage |
| Pin F10 | AVSS — Analog ground |
| Pin F11 | RA4 — General purpose I/O |
| Pin G1 | RC14 — General purpose I/O |
| Pin G2 | RC15 — General purpose I/O |
| Pin G3 | RB0 — General purpose I/O / PGED1 |
| Pin G4 | RB1 — General purpose I/O / PGEC1 |
| Pin G5 | RB2 — General purpose I/O |
| Pin G6 | RB3 — General purpose I/O |
| Pin G7 | RB4 — General purpose I/O |
| Pin G8 | RB5 — General purpose I/O |
| Pin G9 | RB6 — General purpose I/O |
| Pin G10 | RB7 — General purpose I/O |
| Pin G11 | RA5 — General purpose I/O |
| Pin H1 | RB8 — General purpose I/O |
| Pin H2 | RB9 — General purpose I/O |
| Pin H3 | RB10 — General purpose I/O |
| Pin H4 | RB11 — General purpose I/O |
| Pin H5 | RB12 — General purpose I/O |
| Pin H6 | RB13 — General purpose I/O |
| Pin H7 | RB14 — General purpose I/O |
| Pin H8 | RB15 — General purpose I/O |
| Pin H9 | RA6 — General purpose I/O |
| Pin H10 | RA7 — General purpose I/O |
| Pin H11 | AVDD — Analog supply voltage |
| Pin J1 | VDD — Supply voltage |
| Pin J2 | VSS — Ground |
| Pin J3 | RC0 — General purpose I/O |
| Pin J4 | RD12 — General purpose I/O |
| Pin J5 | RD13 — General purpose I/O |
| Pin J6 | RD14 — General purpose I/O |
| Pin J7 | RD15 — General purpose I/O |
| Pin J8 | RC5 — General purpose I/O |
| Pin J9 | RC6 — General purpose I/O |
| Pin J10 | RC7 — General purpose I/O |
| Pin J11 | RC8 — General purpose I/O |
| Pin K1 | RC9 — General purpose I/O |
| Pin K2 | RC10 — General purpose I/O |
| Pin K3 | RC11 — General purpose I/O |
| Pin K4 | RC12 — General purpose I/O |
| Pin K5 | RC13 — General purpose I/O |
| Pin K6 | VDDCORE — Core voltage (internal regulator output) |
| Pin K7 | ENVREG — Voltage regulator enable |
| Pin K8 | VCAP — Voltage regulator bypass cap |
| Pin K9 | OSC1 — Crystal oscillator input |
| Pin K10 | OSC2 — Crystal oscillator output |
| Pin K11 | VSS — Ground |
Typical Applications
PIC32MX460F256L-80V/BG is suitable for 6 applications: USB Full-Speed Peripheral Device, USB On-The-Go Dual-Role Devices, Industrial Control and HMI, Embedded Web Server / IoT Gateway, Portable Data Loggers, Consumer Audio Devices.
USB Full-Speed Peripheral Device
The PIC32MX460F256L-80V/BG is purpose-built for USB full-speed (12 Mbps) peripheral applications such as HID controllers, CDC virtual COM ports, MSD readers, and audio class devices. Its integrated USB 2.0 OTG controller with on-chip PHY eliminates the external USB transceiver, reducing BOM by roughly 1 USD per board and saving board area for compact dongles and instrumentation front-ends. The dedicated DMA channel offloads USB endpoint memory transfers from the CPU, freeing MIPS for application logic. With 256KB Flash and 32KB RAM, the device comfortably runs Microchip's MLA or MPLAB Harmony USB stacks alongside custom application code; engineers typically reserve 50-60KB for stack and class drivers. The 80MHz MIPS M4K core provides 105 DMIPS, more than sufficient for USB polling latency requirements of 1ms in full-speed mode.
Recommended
USB On-The-Go Dual-Role Devices
The PIC32MX460F256L-80V/BG supports USB OTG dual-role operation, making it ideal for devices that can act as either USB host or device depending on cable insertion, such as tablet accessories, industrial data loggers that import from USB sticks, or portable test instruments. The integrated OTG PHY handles session request protocol (SRP) and host negotiation protocol (HNP) without external circuitry. The 32KB SRAM accommodates USB host stack plus FAT32 file system buffers for mass-storage reads, while 256KB Flash holds both USB host and device stacks. Designers commonly pair this MCU with external level shifters for 5V VBUS handling; Microchip's PIC32MX OTG reference design demonstrates role-swap timing under 200 ms.
Recommended
Industrial Control and HMI
With 16-channel 10-bit ADC (1 Msps), 5x 16-bit timers, 4 DMA channels, and the 121-ball TFBGA exposing the full GPIO/peripheral count, the PIC32MX460F256L-80V/BG fits mid-range industrial control applications including PLC I/O modules, motor-control auxiliary boards, sensor hubs, and human-machine interface (HMI) panels. The 10-bit ADC is adequate for temperature, pressure, and potentiometer feedback in HMI; the 80MHz core drives 320x240 QVGA TFTs with Microchip's gfx library. The V-temp -40C to +105C range covers most factory-floor enclosures, while MIPS16e code compression helps fit rich HMI graphics in 256KB Flash. Typical HMI tasks cycle in under 20ms with DMA handling ADC bursts in background.
Recommended
Embedded Web Server / IoT Gateway
The 80MHz MIPS M4K core, 32KB RAM, and TCP/IP stack footprint make the PIC32MX460F256L-80V/BG a viable platform for lightweight embedded web servers, MQTT IoT gateways, and Ethernet-to-serial bridges. Microchip's Microchip Harmony TCP/IP stack plus HTTP server consumes roughly 30-40KB Flash with one TCP socket, leaving ample room for application logic and a small web UI. The four DMA channels allow efficient SPI/uart sensor polling without CPU intervention. Pair with an external ENC28J60 or MRF24WG0MA Wi-Fi transceiver over SPI; throughput of 2-3 Mbps is realistic at 80MHz. V-temp allows deployment in semi-outdoor enclosures.
Recommended
Portable Data Loggers
The PIC32MX460F256L-80V/BG suits battery-powered data loggers measuring temperature, humidity, vibration, or other slow-changing signals. Its 16-channel 10-bit ADC multiplexed through the analog MUX captures multiple sensors with the four DMA channels moving conversion results to RAM without CPU wake-up, while the MIPS16e mode keeps active current low. The 32KB SRAM holds thousands of timestamped samples; an external SPI Flash or SD card extends storage. USB-OTG enables direct file offload to a PC host without a separate cable. With peripheral library sleep modes, average current can drop below 5mA, supporting weeks of logging on a 2000mAh Li-ion cell.
Recommended
Consumer Audio Devices
USB audio class 1.0 devices (headsets, speakers, microphones) are a natural fit for the PIC32MX460F256L-80V/BG thanks to its full-speed USB-OTG and 80MHz throughput. The MIPS M4K core handles 48 kHz / 16-bit stereo USB audio streaming over isochronous endpoints with cycles to spare for DSP effects or volume control. External I2S DACs connect over the two SPI ports reconfigured as I2S, and the 10-bit ADC supports line-input monitoring. 256KB Flash comfortably fits USB audio class drivers plus a small audio-processing library. V-temp allows operation in enclosed speaker cabinets under continuous load.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX460F256L-80V/BG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX460F256LT-80V/BG | PIC32MX460F256L-80I/BG | PIC32MX460F512L-80V/BG | PIC32MX460F256LT-80I/BG | PIC32MX360F512L-80V/BG | PIC32MX360F256L-80V/BG |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 121-ball TFBGA (10x10 mm) | 121-ball TFBGA (10x10 mm) - same | 121-ball TFBGA (10x10 mm) - same | 121-ball TFBGA (10x10 mm) - same | 121-ball TFBGA (10x10 mm) - same | 121-ball TFBGA (10x10 mm) - same | 121-ball TFBGA (10x10 mm) - same |
| Core / Max Frequency | MIPS M4K / 80 MHz | MIPS M4K / 80 MHz | MIPS M4K / 80 MHz | MIPS M4K / 80 MHz | MIPS M4K / 80 MHz | MIPS M4K / 80 MHz | MIPS M4K / 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 512 KB (+100%) | 256 KB | 512 KB (+100%) | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB-OTG | Yes (with PHY) | Yes (with PHY) | Yes (with PHY) | Yes (with PHY) | Yes (with PHY) | No USB | No USB |
| Operating Temperature (V/I grade) | -40C to +105C (V) | -40C to +105C (V) | -40C to +85C (I) | -40C to +105C (V) | -40C to +85C (I) | -40C to +105C (V) | -40C to +105C (V) |
| ADC Channels / Resolution | 16 ch / 10-bit | 16 ch / 10-bit | 16 ch / 10-bit | 16 ch / 10-bit | 16 ch / 10-bit | 16 ch / 10-bit | 16 ch / 10-bit |
Key Differentiators
- Highest-density package exposes maximum peripherals (vs PIC32MX360F256L-80I/BG (100-pin TQFP variants))
- Integrated USB-OTG with on-chip PHY (vs PIC32MX360F256L-80V/BG)
- Industrial V-grade temperature option (-40C to +105C) (vs PIC32MX460F256L-80I/BG)
Design Notes
The 121-ball TFBGA (10x10 mm, 0.8 mm pitch) requires 4-layer PCB with microvia stackups (HDI) for reliable assembly. Escape-route the inner balls using 0.15 mm trace/space on the top layer with via-in-pad or dog-bone fan-out. Match the USB D+/D- pair to 90 ohm differential impedance with length matching within 150 mils per the Microchip PIC32MX USB hardware design checklist. Place 100nF decoupling within 2 mm of every VDD pin and a 10uF bulk near the IC.
The PIC32MX460F256L-80V/BG requires a single 2.3-3.6V supply on VDD pins plus a stable VDDCORE output. The internal 1.8V regulator requires a 10uF low-ESR ceramic capacitor on the VCAP pin (typically X5R/X7R) placed within 5 mm. The ENVREG pin should be tied to VDD (not floated) to enable the regulator. During USB bus-powered designs, ensure VBUS detection triggers before enumeration and that VUSB has its own 100nF + 4.7uF decoupling to handle USB inrush current.
Common pitfalls with the PIC32MX460 series include: (1) forgetting to configure JTAG/TRACE pins as GPIO via CFGCON register to free RB7-RB10 for application use; (2) failing to commit the Flash wait-state to match CPU speed (80MHz requires 2 wait states for Flash access); (3) not enabling the peripheral's analog/digital select (ANSEL) registers before using ADC inputs; (4) connecting ICSP pins (PGEC1/PGED1) directly to application circuitry without isolating for in-circuit programming.
At 80MHz in the 121-ball TFBGA (BG), typical core current is 50-70 mA active plus 20 mA for peripherals. Use the JEDEC EIA/JESD51 standard theta-JA of approximately 30 C/W for the 10x10 mm BGA on a 4-layer JEDEC test board. For sealed enclosures, derate by 30-40% and provide thermal vias under the exposed center balls. For V-temp applications, validate at 105C ambient in chamber for at least 48 hours to catch thermal-induced timing drift in USB and ADC paths.
Compliance Information
RoHS and REACH compliance per Microchip product page; lead-free BG package; AEC-Q100 not applicable for consumer/industrial MCU - not automotive qualified
