PIC32MX440F128L-80I/BG - 80MHz 32-bit MCU 128KB Flash USB-OTG | Microchip
MPN: PIC32MX440F128L-80I/BG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.2 | $8.20 |
| 10 | $7.45 | $74.50 |
| 100 | $6.62 | $662.00 |
| 500 | $5.95 | $2,975.00 |
| 1,000 | $5.3 | $5,300.00 |
PIC32MX440F128L-80I/BG Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, volatile and non-volatile memory, and programmable peripherals. PIC32MX devices specifically use the MIPS32 M4K core, a true 32-bit RISC architecture with hardware multiply/divide and a 5-stage pipeline. Within the broader taxonomy, the PIC32MX family is a 32-bit MCU -> MIPS architecture -> RISC microcontroller -> embedded processor -> semiconductor. The "MX" series is the general-purpose and USB-capable branch, sitting below the "MZ" series that adds higher clock speeds and enhanced peripherals.
Key features include 128 KB of Flash program memory (128K x 8), 32 KB of SRAM, and an integrated USB-OTG full-speed controller. The device offers 10-bit ADC, comparators, I2C, SPI, UART, and PMP peripherals, with DMA support for offloading CPU data movement. Industrial temperature range (-40C to +85C) is indicated by the "I" suffix, and the "80" denotes the 80 MHz maximum operating frequency.
Typical applications include USB peripherals (HID, CDC, mass storage), industrial control panels, embedded data acquisition with USB logging, and low-cost graphical user interfaces driven by an external PMP-connected display. The combination of USB-OTG and a 32-bit core makes the part well-suited to designs that previously required an external USB controller plus 16-bit MCU.
When designing with the TFBGA-121 package, pay attention to PCB layout: route the inner balls out through vias in a dog-bone or via-in-pad pattern, and follow Microchip's recommended decoupling scheme of 0.1 uF + bulk caps per VDD/VUSB rail. Programming is performed via ICSP (PGECx/PGEDx pins) or JTAG.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes that go beyond the manufacturer datasheet, helping engineers select a pin-compatible variant for the PIC32MX440F128L-80I/BG.
Drop-in alternatives for PIC32MX440F128L-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 PIC32MX440F128L-80I/BG (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Operating Voltage, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX440F128LT-80I/BG
✅ Drop-In✓ In Stock
$4.78 / Unit
View Datasheet →PIC32MX460F256L-80I/BG
✅ Drop-In✓ In Stock
$5.55 / Unit
View Datasheet →PIC32MX340F128L-80I/BG
✅ Drop-In✓ In Stock
$5.48 / Unit
View Datasheet →PIC32MX360F512L-80V/BG
✅ Drop-In✓ In Stock
$6.65 / Unit
View Datasheet →PIC32MX360F256L-80I/BG
✅ Drop-In✓ In Stock
$7.58 / Unit
View Datasheet →PIC32MX440F128L-80I/BG Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Bit Width | 32-bit |
| Maximum CPU Frequency | 80 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Data Memory (SRAM) | 32 KB |
| USB Controller | USB 2.0 Full-Speed OTG |
| ADC | 10-bit |
| Supply Voltage | 2.5 V / 3.3 V |
| Operating Temperature Range | -40C to +85C (Industrial, "I") |
| Package | 121-pin TFBGA (10x10 mm) |
| Mounting Type | Surface Mount |
| Pin Count | 121 |
| DMA Channels | Yes |
| ICSP / Debug | PGECx / PGEDx |
| RoHS Status | Compliant |
PIC32MX440F128L-80I/BG 121-pin tfbga (10x10 mm) Pin Configuration Guide
Pin configuration for PIC32MX440F128L-80I/BG (121-pin tfbga (10x10 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 PIC32MX440F128L-80I/BG.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX440F128L-80I/BG is suitable for 6 applications: USB Full-Speed Peripherals (HID, CDC, Mass Storage), Industrial Control Panels with USB Diagnostics, Embedded Data Acquisition with USB Logging, Low-Cost Graphical User Interfaces with PMP, USB-OTG Dual-Role Device Chargers, Educational and Development Boards.
USB Full-Speed Peripherals (HID, CDC, Mass Storage)
The PIC32MX440F128L-80I/BG's integrated USB 2.0 full-speed OTG controller is the primary reason engineers select this MCU for USB peripheral applications. With 80 MHz of CPU headroom, the device can drive USB HID stacks, CDC virtual COM ports, or USB mass storage device mode at USB full speed (12 Mbps) without external PHY. The 32 KB SRAM is large enough to buffer USB descriptor tables and packet payloads alongside user application state, while the 128 KB Flash accommodates full USB stacks (e.g., Microchip's MLA USB framework). Place the device on a board with a 48 MHz crystal and the VUSB rail filter caps; verify differential pair impedance (90 ohm) on the D+/D- lines.
Recommended
Industrial Control Panels with USB Diagnostics
The PIC32MX440F128L-80I/BG's industrial -40C to +85C temperature range and USB-OTG controller make it well-suited to factory-floor panels that expose configuration ports over CDC. The 80 MHz MIPS M4K core can scan 10-bit ADC inputs for sensor telemetry while servicing USB transfers, and the 32 KB SRAM buffers diagnostics logs. Use the device's DMA controller to offload ADC-to-memory transfers from the CPU so USB enumeration latency stays low. Compared to a discrete 16-bit MCU plus external USB controller, the integrated approach reduces PCB area by roughly 40% and BOM count by 6-8 components.
Recommended
Embedded Data Acquisition with USB Logging
For portable data loggers, the PIC32MX440F128L-80I/BG combines a 10-bit ADC at up to 1 Msps with USB-OTG for direct PC connectivity. The 128 KB Flash stores the acquisition firmware and a small file system, while 32 KB SRAM holds ring-buffer samples between USB transfers. In a typical 8-channel 1 kHz logger design, the CPU overhead is below 20% at 80 MHz, leaving headroom for averaging, filtering, and USB bulk transfers. Use the device's DMA controller to stream ADC results to RAM without CPU intervention during high-rate bursts.
Recommended
Low-Cost Graphical User Interfaces with PMP
The PIC32MX440F128L-80I/BG's parallel master port (PMP) can drive small graphical LCDs at up to 16-bit parallel width, enabling cost-sensitive graphical user interfaces. At 80 MHz, the device can refresh QVGA (320x240) displays at 30+ FPS using the PMP's dedicated DMA-style bursting. Combine with a small resistive touch controller over SPI for input. The 121-TFBGA package exposes the full PMP pin count, while smaller 64-pin PIC32MX parts have a reduced PMP width. Pair with an external 8 MB SPI flash for bitmap asset storage.
Recommended
USB-OTG Dual-Role Device Chargers
The PIC32MX440F128L-80I/BG's full-speed OTG support allows battery-operated devices to act as either USB device or USB host, enabling chargers that pull power from upstream or deliver power to downstream accessories. The MCU's 32 KB SRAM accommodates OTG host stacks for negotiating role swap, while the 80 MHz core handles BC1.2 detection algorithms. Industrial temperature grade permits use in outdoor or in-vehicle chargers. Use the MCP2200 or an external boost converter for VBUS switching; the PIC32 controls the role via the USB_VBUS_SENSE and USB_ID pins per Microchip reference designs.
Recommended
Educational and Development Boards
The PIC32MX440F128L-80I/BG is commonly deployed in university curricula and hobbyist development boards thanks to its combination of USB-OTG, 128 KB Flash, and Microchip's free MPLAB X toolchain. Students gain exposure to MIPS assembly, real-time interrupts, USB stack implementation, and PMP-driven displays using the same MCU found in production designs, easing the transition from learning to deployment. The PICkit 5 in-circuit debugger connects via ICSP (PGECx/PGEDx) pins and supports breakpoints and trace, plus Microchip's MPLAB Harmony framework accelerates graphics and USB stack development. Industrial temperature rating also supports classroom lab environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX440F128L-80I/BG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX440F128LT-80I/BG | PIC32MX460F256L-80I/BG | PIC32MX340F128L-80I/BG | PIC32MX360F512L-80V/BG | PIC32MX360F256L-80I/BG |
|---|---|---|---|---|---|---|
| Package | 121-TFBGA (10x10 mm) | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 256 KB | 128 KB | 512 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Maximum CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| USB Controller | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial, "V" suffix) | -40C to +85C (Industrial) |
| Core | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
Key Differentiators
- Identical die available in tape-and-reel packaging (vs PIC32MX440F128LT-80I/BG)
- Same package with double the Flash for richer USB stacks (vs PIC32MX460F256L-80I/BG)
- Identical Flash/SRAM/USB at lower cost when USB-OTG is not required (vs PIC32MX340F128L-80I/BG)
Design Notes
The 121-TFBGA package uses 0.5 mm or 0.8 mm pitch balls and requires dog-bone or via-in-pad PCB layout to route inner balls out. Use a 4-layer stack-up with the inner plane at least 0.5 mm below the BGA pads to minimize via stubs. Add 0.1 uF + 1 uF + 10 uF decoupling caps per VDD/VUSB rail within 5 mm of the package perimeter per the PIC32MX3XX/4XX family reference schematic.
USB-OTG operation requires a precise 48 MHz clock source for full-speed USB. If using the internal 8 MHz PLL with USB fraction, ensure the configured PLL produces a 48 MHz output with the required USB clock accuracy (within 0.25% per the USB specification). Incorrect USB clock settings cause enumeration failures or unstable device connections. Verify VUSB rail voltage (3.3 V) before attempting USB enumeration.
Keep the USB D+ and D- traces as a 90-ohm differential pair with no stubs. Match trace length to within 150 mils of each other. Route D+/D- away from switching signals like PWM or SPI clocks. Place the VBUS sense and USB_ID pins with clean traces back to the corresponding connector pins. Per Microchip's PIC32 USB design checklist, an ESD protection array (such as the USBLC6-2SC6) on D+/D- is required for production designs.
The PIC32MX440F128L-80I/BG requires a 2.5 V or 3.3 V supply on VDD; the core runs from an internal 1.8 V regulator powered by VDD. Total supply current at 80 MHz is approximately 65-75 mA active with USB, so a 100 mA LDO is adequate for most designs. For low-power designs, the device supports Sleep and Idle modes with peripheral clocks gated; reference section 32 of the family datasheet for DC electrical specifications and power-down current values.
Compliance Information
RoHS compliant per Microchip ordering information. Lead-free TFBGA package. Industrial -40C to +85C temperature grade. Not AEC-Q100 qualified; this is a general-purpose MCU. Conflict minerals compliance available via Microchip corporate sustainability statements.
