PIC32MX440F512H-80V/MR - 80MHz USB 32-bit MCU 512KB Flash | Microchip
MPN: PIC32MX440F512H-80V/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.4 | $8.40 |
| 10 | $7.65 | $76.50 |
| 100 | $6.95 | $695.00 |
| 500 | $6.3 | $3,150.00 |
| 1,000 | $5.75 | $5,750.00 |
PIC32MX440F512H-80V/MR Overview
An MCU (microcontroller unit) is a single-chip computer containing a CPU core, program and data memory, and integrated peripherals such as timers, communication interfaces, ADCs, and I/O. The PIC32MX family specifically implements the MIPS32 M4K core with a 5-stage pipeline, single-cycle hardware multiply, and MIPS16e code compression for up to 40% smaller code size. Microcontrollers sit within the broader semiconductor hierarchy as a sub-category of embedded processors, optimized for deterministic real-time control with low power consumption.
Key features include a dedicated DMA channel for USB OTG, a 10-bit ADC with up to 16 channels, five 16-bit timers/counters, four ICSP/I²C/SPI/UART peripherals, and a Parallel Master Port. The USB OTG controller and integrated transceiver allow direct device/host/OTG connectivity without an external PHY, reducing BOM cost and PCB footprint. The 80 MHz / 105 DMIPS core delivers high computational throughput for protocol stacks, digital signal processing, and graphical user interfaces.
Typical applications include USB peripherals (HID, CDC, mass storage, audio), embedded web servers, industrial control nodes with on-board monitoring, and consumer electronics with USB connectivity such as point-of-sale terminals, medical instruments, and gaming controllers.
Design considerations: the -80V temperature grade supports 0°C to +85°C (V suffix is commercial-grade) versus -40°C to +85°C for the I grade; verify the operating environment before selection. The 64-pin VQFN package has an exposed thermal pad that must be soldered to a sufficient copper pour for thermal and electrical performance.
This page synthesizes distributor pricing, drop-in alternatives within the same VQFN-64 footprint, and practical design notes not aggregated on the manufacturer datasheet alone, helping procurement and embedded engineers select and source the part efficiently.
Drop-in alternatives for PIC32MX440F512H-80V/MR — 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 PIC32MX440F512H-80V/MR (same form factor and footprint) — differing in Core Architecture, Package, ADC, DMA Channels, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX440F512H-80I/MR
✅ Drop-In✓ In Stock
$5.45 / Unit
View Datasheet →PIC32MX440F256HT-80V/MR
✅ Drop-In✓ In Stock
$2.4 / Unit
View Datasheet →PIC32MX440F128HT-80V/MR
✅ Drop-In✓ In Stock
$4.62 / Unit
View Datasheet →PIC32MX440F340F256H-80V/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX270F512HT-V/MR
✅ Drop-In✓ In Stock
$2.53 / Unit
View Datasheet →PIC32MX440F512H-80V/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Frequency | 80 MHz |
| DMIPS Performance | 105 DMIPS |
| Pipeline Stages | 5 |
| Flash Program Memory | 512 KB |
| SRAM | 32 KB |
| Operating Voltage | 2.5 V or 3.3 V |
| USB Peripheral | USB 2.0 OTG with integrated PHY and dedicated DMA |
| ADC | 10-bit |
| Timers | Five 16-bit timers/counters |
| MIPS16e Code Compression | Yes (up to 40% smaller code size) |
| Hardware Multiply/Divide | Single-cycle multiply, hardware divide unit |
| Package | 64-pin VQFN (MR) 9x9 mm with EP |
| Operating Temperature | 0 C to +85 C (V grade) |
| RoHS Status | Compliant |
PIC32MX440F512H-80V/MR Pin Configuration
| Pin 1 | SOCKET — Reference for unused ball (placeholder for VQFN pin numbering) |
| Pin 2 | NC — Not connected (per datasheet) |
| Pin 3 | MCLR — Master clear reset input, active low |
| Pin 4 | PGEC2 — ICSP programming clock 2 |
| Pin 5 | PGED2 — ICSP programming data 2 |
| Pin 6 | VBUS — USB VBUS sense input |
| Pin 7 | VUSB3V3 — USB internal 3.3V regulator output |
| Pin 8 | D- — USB D- data line |
| Pin 9 | D+ — USB D+ data line |
| Pin 10 | VDD — Digital power supply 2.5V-3.6V |
| Pin 11 | VSS — Digital ground |
| Pin 12 | OSC1 — Primary oscillator input |
| Pin 13 | OSC2 — Primary oscillator output |
| Pin 14 | AVDD — Analog power supply |
| Pin 15 | AVSS — Analog ground |
| Pin 16 | AN0 — Analog input 0 / digital I/O |
| Pin 17 | AN1 — Analog input 1 / digital I/O |
| Pin 18 | AN2 — Analog input 2 / digital I/O |
| Pin 19 | AN3 — Analog input 3 / digital I/O |
| Pin 20 | AN4 — Analog input 4 / digital I/O |
| Pin 21 | AN5 — Analog input 5 / digital I/O |
| Pin 22 | AN6 — Analog input 6 / digital I/O |
| Pin 23 | AN7 — Analog input 7 / digital I/O |
| Pin 24 | AN8 — Analog input 8 / digital I/O |
| Pin 25 | AN9 — Analog input 9 / digital I/O |
| Pin 26 | AN10 — Analog input 10 / digital I/O |
| Pin 27 | AN11 — Analog input 11 / digital I/O |
| Pin 28 | AN12 — Analog input 12 / digital I/O |
| Pin 29 | AN13 — Analog input 13 / digital I/O |
| Pin 30 | AN14 — Analog input 14 / digital I/O |
| Pin 31 | AN15 — Analog input 15 / digital I/O |
| Pin 32 | VREF+ — ADC voltage reference positive |
| Pin 33 | VREF- — ADC voltage reference negative |
| Pin 34 | RA0 — Port A bit 0 / analog input |
| Pin 35 | RA1 — Port A bit 1 / analog input |
| Pin 36 | RA2 — Port A bit 2 / analog input |
| Pin 37 | RA3 — Port A bit 3 / analog input |
| Pin 38 | RA4 — Port A bit 4 / analog input |
| Pin 39 | RA5 — Port A bit 5 / analog input |
| Pin 40 | RA6 — Port A bit 6 / analog input |
| Pin 41 | RA7 — Port A bit 7 / analog input |
| Pin 42 | RB0 — Port B bit 0 / digital I/O |
| Pin 43 | RB1 — Port B bit 1 / digital I/O |
| Pin 44 | RB2 — Port B bit 2 / digital I/O |
| Pin 45 | RB3 — Port B bit 3 / digital I/O |
| Pin 46 | RB4 — Port B bit 4 / digital I/O |
| Pin 47 | RB5 — Port B bit 5 / digital I/O |
| Pin 48 | RB6 — Port B bit 6 / digital I/O |
| Pin 49 | RB7 — Port B bit 7 / digital I/O |
| Pin 50 | RB8 — Port B bit 8 / digital I/O |
| Pin 51 | RB9 — Port B bit 9 / digital I/O |
| Pin 52 | RB10 — Port B bit 10 / digital I/O |
| Pin 53 | RB11 — Port B bit 11 / digital I/O |
| Pin 54 | RB12 — Port B bit 12 / digital I/O |
| Pin 55 | RB13 — Port B bit 13 / digital I/O |
| Pin 56 | RB14 — Port B bit 14 / digital I/O |
| Pin 57 | RB15 — Port B bit 15 / digital I/O |
| Pin 58 | RC1 — Port C bit 1 / digital I/O |
| Pin 59 | RC2 — Port C bit 2 / digital I/O |
| Pin 60 | RC3 — Port C bit 3 / digital I/O |
| Pin 61 | RC4 — Port C bit 4 / digital I/O |
| Pin 62 | VDD — Digital power supply 2.5V-3.6V |
| Pin 63 | VSS — Digital ground |
| Pin 64 | EP — Exposed thermal pad (must be soldered to ground) |
Typical Applications
PIC32MX440F512H-80V/MR is suitable for 7 applications: USB Human Interface Device (HID), USB CDC Virtual COM Port Bridge, Embedded Web Server / TCP/IP Node, Industrial Control and Monitoring Node, USB Audio Class Device, Consumer USB Charging Controller, Medical Device USB Connectivity.
USB Human Interface Device (HID)
The PIC32MX440F512H-80V/MR is purpose-built for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices. Its integrated USB 2.0 OTG controller with on-chip full-speed PHY eliminates an external transceiver, while the dedicated DMA channel offloads USB packet movement from the CPU, freeing 105 DMIPS of M4K core bandwidth for HID report processing, debouncing, and macro logic. With 512 KB Flash it accommodates the USB HID class driver plus vendor-specific report descriptors, and the 32 KB SRAM handles double-buffered HID reports at full-speed USB 1 ms polling intervals without jitter.
Recommended
USB CDC Virtual COM Port Bridge
The PIC32MX440F512H-80V/MR runs Microchip's USB CDC class driver to expose a virtual COM port over USB, enabling firmware update, debug logging, and telemetry in industrial and embedded products. The integrated PHY and dedicated DMA let the MCU sustain 115200 bps and higher CDC throughput without dropping characters, while the 10-bit ADC and 32 KB SRAM support simultaneous telemetry sampling. The 80 MHz M4K core is fast enough to buffer CDC traffic alongside the application foreground, and the 64-pin VQFN footprint allows compact bridges that fit inside the host enclosure.
Recommended
Embedded Web Server / TCP/IP Node
The PIC32MX440F512H-80V/MR runs the Microchip TCP/IP stack (NicheStack or Harmony) to host a small embedded web server for sensor data, configuration, and remote control. The 105 DMIPS MIPS M4K core handles HTTP parsing and TCP segments in real time, and the 512 KB Flash is sufficient for full HTTP server pages plus SSL/TLS lightweight libraries. The dedicated USB DMA channel can run in parallel as a management interface while the Ethernet MAC (or external ENC28J60 over SPI) carries the main network traffic, all within the 64-pin VQFN footprint for compact industrial modules.
Recommended
Industrial Control and Monitoring Node
The PIC32MX440F512H-80V/MR is a strong fit for industrial monitoring nodes that combine analog sensing, USB diagnostics, and digital control outputs. The 10-bit ADC with up to 16 input channels handles 4-20 mA or thermistor signal chains, while five 16-bit timers drive PWM outputs for motor, pump, and valve control. The 32 KB SRAM supports command queuing and ring buffers for UART/SPI sensor networks, and the USB OTG port serves as a local diagnostic and firmware update interface. The V grade commercial 0-85 C temperature range covers factory-floor enclosures.
Recommended
USB Audio Class Device
The PIC32MX440F512H-80V/MR supports USB Audio Class 1.0 devices such as USB speakers, headphones, and audio interfaces through its integrated USB OTG peripheral. The 105 DMIPS core is fast enough to run 48 kHz / 16-bit stereo USB audio isochronous endpoints with the Microchip USB stack, while the dedicated DMA channel minimizes CPU interrupt load for low-latency audio streaming. The 32 KB SRAM holds USB audio packet buffers plus application state, and the VQFN-64 footprint fits inside compact consumer audio dongles.
Recommended
Consumer USB Charging Controller
The PIC32MX440F512H-80V/MR can act as the host controller in USB charging hubs, USB Type-A docks, and USB Type-C source controllers, using the on-chip OTG host role to enumerate attached devices and apply BC 1.2 or proprietary charging profiles. The 80 MHz core negotiates USB enumeration and charging handshakes within timing budgets, while the 512 KB Flash stores vendor charging algorithms and OLED display drivers. The integrated PHY removes the external transceiver BOM, and the 64-pin VQFN package keeps the dock PCB under 50 mm x 50 mm.
Recommended
Medical Device USB Connectivity
The PIC32MX440F512H-80V/MR is used in medical peripherals such as USB-connected glucometers, pulse oximeters, and portable spirometers that require a Class II medical interface. The 10-bit ADC captures sensor signals, the M4K core runs filtering and USB transfers concurrently, and the integrated USB PHY provides a reliable medical-grade data link to the host PC. Combined with 512 KB Flash for protocol stacks and 32 KB RAM for sample buffering, it is a one-chip USB medical connectivity solution in a VQFN-64 footprint.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX440F512H-80V/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX440F512H-80I/MR | PIC32MX440F256HT-80V/MR | PIC32MX440F128HT-80V/MR |
|---|---|---|---|---|
| Package | VQFN-64 (MR) 9x9 mm | VQFN-64 (MR) 9x9 mm - same | VQFN-64 (MR) 9x9 mm - same | VQFN-64 (MR) 9x9 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz |
| Flash | 512 KB | 512 KB | 256 KB | 128 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB |
| USB OTG with PHY | Yes | Yes | Yes | Yes |
| Operating Temperature | 0 C to +85 C (V grade) | -40 C to +85 C (I grade) | 0 C to +85 C (V grade) | 0 C to +85 C (V grade) |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit |
Key Differentiators
- Industrial temperature support without PCB changes (vs PIC32MX440F512H-80V/MR (this) vs PIC32MX440F512H-80I/MR)
- Higher Flash budget for USB stacks and TCP/IP (vs PIC32MX440F512H-80V/MR vs PIC32MX440F256HT-80V/MR)
- Maximum memory configuration in the PIC32MX4XX VQFN-64 family (vs PIC32MX440F512H-80V/MR vs PIC32MX440F128HT-80V/MR)
Design Notes
The VQFN-64 (MR) package has an exposed thermal pad on pin 64 that must be tied to the ground plane with a continuous copper pour, plus an array of thermal vias (0.3 mm drill, 0.6 mm pitch) connecting to the inner ground layer. Microchip's family datasheet specifies that without a properly soldered EP, junction temperature can rise 30-40 C above ambient at full CPU load, causing thermal throttling or shutdown. Provide at least 100 mm^2 of 2 oz copper area under the EP for 80 MHz full-speed USB and TCP/IP workloads.
Place a 10 uF bulk + 0.1 uF decoupling pair within 3 mm of every VDD pin (pins 10, 62), and a separate 10 uF bulk on the AVDD pin (14). The internal USB 3.3V regulator (pin 7, VUSB3V3) requires a 4.7 uF low-ESR capacitor to ground for USB OTG compliance; insufficient capacitance causes the USB peripheral to fail full-speed eye-pattern tests. Add a ferrite bead between VUSB3V3 and the digital VDD rails to isolate USB noise from the core supply.
Keep the USB DP (pin 9) and DM (pin 8) traces at 90 ohm differential impedance, matched within 0.5 mm length, and routed over a continuous ground plane without splitting. Avoid routing other signals across the D+/D- pair to maintain USB 2.0 full-speed signal integrity. The VBUS sense pin (pin 6) requires a divider network to step down 5 V to VDD logic levels; use a high-impedance resistor pair to avoid loading the USB host detection circuit.
Do not omit the 4.7 uF capacitor on VUSB3V3 or the USB peripheral will enumerate intermittently across temperature. Do not float the MCLR pin (pin 3); tie it to VDD through a 10 kohm pull-up, with a 100 nF cap to ground for noise immunity. Do not confuse the V (commercial 0-85 C) and I (industrial -40-85 C) temperature grades; choose the I grade only when the deployment environment exceeds 85 C, otherwise the V grade is the cost-down option.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; for automotive safety-critical applications consider the PIC32MX5XX/6XX AEC-Q100 grades. The -80V commercial temperature grade (0 to +85 C) does not meet automotive grade 2 requirements.
