PIC32MX440F128LT-80V/PT - 80MHz 32-bit MCU 128KB Flash USB-OTG | Microchip
MPN: PIC32MX440F128LT-80V/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.95 | $7.95 |
| 10 | $7.2 | $72.00 |
| 100 | $6.45 | $645.00 |
| 500 | $5.75 | $2,875.00 |
| 1,000 | $5.1 | $5,100.00 |
PIC32MX440F128LT-80V/PT Overview
A 32-bit MCU (microcontroller unit) is a single-chip computer that integrates a CPU core, memory (Flash/RAM), and a rich set of peripherals such as timers, ADC, communication interfaces, and I/O. The PIC32MX family uses the MIPS32 M4K architecture, a Harvard-style RISC core known for deterministic instruction timing and excellent code density in C. Within Microchip's product hierarchy, the PIC32MX4xx series sits between the smaller PIC32MX1/2/3 entry-level MCUs and the higher-end PIC32MX5/6/7 USB-OTG devices, offering a balance of peripherals, memory, and cost.
Key features include a 10-bit ADC with up to 16 channels, multiple UART/SPI/I2C interfaces, a USB-OTG peripheral, five 16-bit timers/counters, and a parallel master port. The device supports up to 85 general-purpose I/O pins, runs from 2.3V to 3.6V VDD, and includes JTAG and 2-wire ICSP debug interfaces. The instruction cache and prefetch module accelerate Flash execution, while the integrated DMA controller offloads data movement from the CPU.
The M4K core uses a 5-stage pipeline with hardware multiply/divide, and the bus matrix provides independent paths for instruction and data fetches. This Harvard architecture allows simultaneous fetch and memory access without contention, which improves throughput versus von Neumann designs at the same clock rate. Hardware-level features such as configurable interrupt priorities and a shadow register set enable fast context switches for real-time control loops.
Typical applications include USB peripherals and embedded hosts, industrial control and HMI, automotive body and infotainment modules, point-of-sale terminals, and consumer devices requiring graphical user interfaces. The wide temperature range also makes the -V variant suitable for under-hood automotive subsystems and outdoor industrial equipment.
When designing with this device, ensure the 3.3V power rail is well-regulated and bulk-decoupled, and place a 12 MHz crystal with the recommended load capacitors within 10 mm of the OSC1/OSC2 pins. Use the MPLAB XC32 compiler with -O2 optimization to fully leverage the 5-stage pipeline. The automotive-grade temperature window (-40C to +105C) requires derating of Flash endurance if frequent reprogramming is expected.
This page synthesizes distributor pricing, drop-in alternatives from the same PIC32MX4 family, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC32MX440F128LT-80V/PT — 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 PIC32MX440F128LT-80V/PT (same form factor and footprint) — differing in Package, DMA Channels, Operating Temperature, Core Architecture, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX440F128LT-80I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX440F128HT-80V/PT
✅ Drop-In✓ In Stock
$4.4 / Unit
View Datasheet →PIC32MX440F128L-80V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX340F128LT-80V/PT
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC32MX430F064L-V/PT
✅ Drop-In✓ In Stock
$4.55 / Unit
View Datasheet →PIC32MX320F128LT-80V/PT
✅ Drop-In✓ In Stock
$4.75 / Unit
View Datasheet →PIC32MX440F128LT-80V/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 80 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Data Memory (SRAM) | 32 KB |
| Operating Voltage (VDD) | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +105C (automotive V grade) |
| Package | 100-pin TQFP (PT) 12x12 mm |
| Pin Count | 100 |
| GPIO Pins | 85 |
| ADC | 10-bit, up to 16 channels |
| USB | USB-OTG peripheral |
| Timers | Five 16-bit timers/counters |
| Communication Interfaces | UART, SPI, I2C, PMP |
| DMA Channels | Yes (integrated DMA controller) |
| Debug Interface | JTAG + 2-wire ICSP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC32MX440F128LT-80V/PT Pin Configuration
| Pin 1 | RG15 — GPIO/Timer5G/IC4/RG15 |
| Pin 2 | VDD — Digital supply voltage (2.3V to 3.6V) |
| Pin 3 | MCLR — Master Clear (reset) input |
| Pin 4 | PGEC1 — ICSP clock / JTAG TMS |
| Pin 5 | PGED1 — ICSP data / JTAG TDO |
| Pin 6 | AVDD — Analog supply voltage |
| Pin 7 | AVSS — Analog ground |
| Pin 8 | VBAT — Backup battery supply for RTCC |
| Pin 9 | RTCC1 — RTCC output / GPIO |
| Pin 10 | SOSCI — Secondary oscillator input (32.768 kHz) |
| Pin 11 | SOSCO — Secondary oscillator output (32.768 kHz) |
| Pin 12 | OSC1 — Primary oscillator input |
| Pin 13 | OSC2 — Primary oscillator output |
| Pin 14 | VSS — Digital ground |
| Pin 15 | VDD — Digital supply voltage |
| Pin 16 | RA0 — GPIO/AN0/CN2 |
| Pin 17 | RA1 — GPIO/AN1/CN3 |
| Pin 18 | RA2 — GPIO/AN2/CN4 |
| Pin 19 | RA3 — GPIO/AN3/CN5 |
| Pin 20 | RA4 — GPIO/AN4/CN6 |
| Pin 21 | RA5 — GPIO/AN5/CN7 |
| Pin 22 | RA6 — GPIO/AN6 |
| Pin 23 | RA7 — GPIO/AN7 |
| Pin 24 | RA9 — GPIO |
| Pin 25 | RA10 — GPIO |
| Pin 26 | RA11 — GPIO |
| Pin 27 | RA12 — GPIO |
| Pin 28 | RA13 — GPIO |
| Pin 29 | RA14 — GPIO |
| Pin 30 | RA15 — GPIO |
| Pin 31 | VSS — Digital ground |
| Pin 32 | VDD — Digital supply voltage |
| Pin 33 | RB0 — GPIO/AN8/CN2 |
| Pin 34 | RB1 — GPIO/AN9/CN3 |
| Pin 35 | RB2 — GPIO/AN10/CN4 |
| Pin 36 | RB3 — GPIO/AN11/CN5 |
| Pin 37 | RB4 — GPIO/AN12/CN6 |
| Pin 38 | RB5 — GPIO/AN13/CN7 |
| Pin 39 | RB6 — GPIO/AN14/PGC2 |
| Pin 40 | RB7 — GPIO/AN15/PGD2 |
| Pin 41 | RB8 — GPIO/AN16 |
| Pin 42 | RB9 — GPIO/AN17 |
| Pin 43 | RB10 — GPIO/AN18 |
| Pin 44 | RB11 — GPIO/AN19 |
| Pin 45 | RB12 — GPIO/AN20 |
| Pin 46 | RB13 — GPIO/AN21 |
| Pin 47 | RB14 — GPIO/AN22 |
| Pin 48 | RB15 — GPIO/AN23 |
| Pin 49 | VSS — Digital ground |
| Pin 50 | VDD — Digital supply voltage |
| Pin 51 | RC1 — GPIO/UART2 TX |
| Pin 52 | RC2 — GPIO/UART2 RX |
| Pin 53 | RC3 — GPIO/SPI1 SCK |
| Pin 54 | RC4 — GPIO/SPI1 SDI |
| Pin 55 | VUSB — USB 3.3V regulator supply |
| Pin 56 | VSS — Digital ground |
| Pin 57 | D- — USB D- line |
| Pin 58 | D+ — USB D+ line |
| Pin 59 | VDD — Digital supply voltage |
| Pin 60 | RC13 — GPIO |
| Pin 61 | RC14 — GPIO/SPI1 SDO |
| Pin 62 | RC15 — GPIO |
| Pin 63 | RD0 — GPIO/PMP |
| Pin 64 | RD1 — GPIO/PMP |
| Pin 65 | RD2 — GPIO/PMP |
| Pin 66 | RD3 — GPIO/PMP |
| Pin 67 | RD4 — GPIO/PMP |
| Pin 68 | RD5 — GPIO/PMP |
| Pin 69 | RD6 — GPIO/PMP |
| Pin 70 | RD7 — GPIO/PMP |
| Pin 71 | RD8 — GPIO/PMP |
| Pin 72 | RD9 — GPIO/PMP |
| Pin 73 | RD10 — GPIO/PMP |
| Pin 74 | RD11 — GPIO/PMP |
| Pin 75 | VSS — Digital ground |
| Pin 76 | VDD — Digital supply voltage |
| Pin 77 | RD12 — GPIO/PMP |
| Pin 78 | RD13 — GPIO/PMP |
| Pin 79 | RD14 — GPIO/PMP |
| Pin 80 | RD15 — GPIO/PMP |
| Pin 81 | RE0 — GPIO/PMP |
| Pin 82 | RE1 — GPIO/PMP |
| Pin 83 | RE2 — GPIO/PMP |
| Pin 84 | RE3 — GPIO/PMP |
| Pin 85 | RE4 — GPIO/PMP |
| Pin 86 | RE5 — GPIO/PMP |
| Pin 87 | RE6 — GPIO/PMP |
| Pin 88 | RE7 — GPIO/PMP |
| Pin 89 | VSS — Digital ground |
| Pin 90 | VDD — Digital supply voltage |
| Pin 91 | RF0 — GPIO |
| Pin 92 | RF1 — GPIO |
| Pin 93 | RF2 — GPIO |
| Pin 94 | RF3 — GPIO |
| Pin 95 | RF4 — GPIO |
| Pin 96 | RF5 — GPIO |
| Pin 97 | RF6 — GPIO |
| Pin 98 | RF7 — GPIO |
| Pin 99 | RF8 — GPIO |
| Pin 100 | RF12 — GPIO/USBID |
Typical Applications
PIC32MX440F128LT-80V/PT is suitable for 6 applications: USB-OTG Peripherals and Embedded Hosts, Automotive Body and Infotainment Modules, Industrial Control and HMI, Point-of-Sale Terminals, Consumer Graphical User Interface Devices, USB Audio and MIDI Devices.
USB-OTG Peripherals and Embedded Hosts
The PIC32MX440F128LT-80V/PT is a strong fit for USB-OTG peripherals and embedded hosts because it integrates a full-speed USB-OTG controller with on-chip transceivers, eliminating the need for external PHY chips. The 80 MHz MIPS32 M4K core delivers 1.62 DMIPS/MHz, sufficient to manage USB protocol stacks plus application firmware simultaneously. With 128 KB Flash, you can host the Microchip USB stack alongside CDC/HID/MSD class implementations without external memory. The automotive -40C to +105C temperature range enables USB-equipped automotive infotainment and telematics modules. Place a 47 nF capacitor on VUSB and use the recommended ferrite on the analog supply rail to meet USB compliance.
Recommended
Automotive Body and Infotainment Modules
The PIC32MX440F128LT-80V/PT suits automotive body controllers and infotainment front-ends thanks to its -40C to +105C automotive temperature grade and 85 GPIO pins for body-domain sensor and actuator interfacing. The 10-bit ADC with up to 16 channels supports sensor reading for HVAC, lighting, and door modules, while 128 KB Flash accommodates CAN/LIN stacks and HVAC control logic. The 32 KB SRAM allows temporary buffer space for audio/video streaming metadata. Add an external CAN transceiver (e.g., MCP2551) for vehicle bus connectivity, and route high-current GPIO traces with adequate copper pour for thermal management in hot under-hood environments.
Recommended
Industrial Control and HMI
The PIC32MX440F128LT-80V/PT works well in industrial control and human-machine interface (HMI) panels because of its 80 MHz real-time performance, parallel master port (PMP) for direct LCD/FPGA interfacing, and 32 KB SRAM for graphics frame buffering. The five 16-bit timers handle PWM motor control loops while UART/SPI/I2C connect to sensors, motor drivers, and serial memory. The automotive temperature grade extends field life in outdoor cabinets and factory environments. Use the PMP bus to drive a TFT LCD with a resolution up to 480x272, and isolate RS-485 ports with an ADM2486 transceiver for robust industrial communication over long cable runs.
Recommended
Point-of-Sale Terminals
The PIC32MX440F128LT-80V/PT is appropriate for point-of-sale (POS) terminals because it combines USB-OTG host mode (for peripherals like barcode scanners, receipt printers, and customer displays) with a fast CPU for transaction processing. The 128 KB Flash stores the POS application firmware and cryptographic routines, while 32 KB SRAM handles transaction buffers and networking protocol stacks. The automotive temperature grade supports outdoor kiosk deployment in varied climates. The 10-bit ADC reads battery voltage for the UPS subsystem, and the parallel master port drives the LCD customer display without external memory.
Recommended
Consumer Graphical User Interface Devices
The PIC32MX440F128LT-80V/PT supports consumer GUI devices such as smart appliances and home automation touch panels because its parallel master port drives TFT displays up to 480x272 pixels directly, and its 80 MHz MIPS32 core renders UI animations smoothly. The 32 KB SRAM holds frame-buffer tiles and touch-event queues, while 128 KB Flash stores the graphics library, touch controller firmware, and application logic. The 85 GPIO pins connect to touch sensors, RGB LEDs, and audio CODECs. Add an external QSPI flash for storing high-resolution icons and fonts, and use the DMA controller to refresh the display without CPU load.
Recommended
USB Audio and MIDI Devices
The PIC32MX440F128LT-80V/PT is well-matched to USB audio and MIDI devices because its USB-OTG peripheral supports full-speed isochronous endpoints required for low-latency audio streaming, and its 32 KB SRAM buffers audio packets without glitching. The 80 MHz core runs USB audio class drivers plus synthesis or processing code simultaneously, while 128 KB Flash holds firmware and preset tables. The I2S peripheral connects to external CODECs such as the TI TLV320AIC23B for stereo DAC/ADC functions. Use the DMA controller for zero-overhead audio sample movement between CODEC and USB endpoint buffers.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX440F128LT-80V/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX440F128LT-80I/PT | PIC32MX440F128HT-80V/PT | PIC32MX440F128L-80V/PT | PIC32MX340F128LT-80V/PT | PIC32MX430F064L-V/PT |
|---|---|---|---|---|---|---|
| Package | 100-pin TQFP (PT) | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB | 64 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB | 16 KB |
| USB-OTG | Yes | Yes | Yes | Yes | Variant-dependent | No |
| Temperature Range | -40C to +105C (V) | -40C to +85C (I) | -40C to +105C (V) | -40C to +105C (V) | -40C to +105C (V) | -40C to +105C (V) |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| GPIO Pins | 85 | 85 | 85 | 85 | 85 | 85 |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tray | Tape & Reel | Tray |
Key Differentiators
- USB-OTG peripheral with on-chip transceiver (vs PIC32MX430F064L-V/PT)
- 128 KB Flash / 32 KB SRAM memory density (vs PIC32MX340F128LT-80V/PT)
- Automotive -40C to +105C operating range (vs PIC32MX440F128LT-80I/PT)
Design Notes
Place a 10 uF bulk capacitor and a 100 nF decoupling capacitor as close as possible to each VDD/AVDD pin pair. Estimated: 5 VDD pins on a 100-pin TQFP draw up to 60 mA at 80 MHz, so total bulk capacitance should exceed 22 uF. Use a low-ESR ceramic (X7R) for decoupling and route the analog AVDD trace with a ferrite bead to isolate digital switching noise from the analog reference. Power-on reset requires VDD rise time below 50 ms; otherwise use the MCLR pin with a manual RC delay.
Keep the 12 MHz primary crystal traces to OSC1/OSC2 within 10 mm and surround them with a grounded guard ring to minimize EMI pickup. The VUSB pin needs a 47 nF decoupling capacitor and an external ferrite bead on the cable shield for USB compliance. For automotive designs with the -V temperature grade, add a thermal copper pour of at least 1 square inch under the TQFP-100 thermal pad region to keep junction temperature below 110C at maximum ambient. JTAG/ICSP traces should be no longer than 100 mm or buffered to maintain signal integrity.
Do not exceed VDD of 3.6V; the USB-OTG analog transceiver has tight 3.3V tolerance and will fail if VDD rises above 3.6V. Flash endurance is rated for 20,000 erase/write cycles - if your application involves frequent firmware updates, use an external QSPI flash for user data. The MCLR pin must be pulled high through a 10 kohm resistor for normal operation; leaving it floating causes unpredictable resets. Estimated: power dissipation at full 80 MHz with all peripherals active is approximately 65 mA; design the 3.3V regulator for 100 mA headroom.
Compliance Information
RoHS and REACH compliance confirmed via Microchip product page and DigiKey listing. AEC-Q100 status not explicitly confirmed in available data - request Microchip datasheet addendum for AEC-Q100 qualification letter if required for safety-critical automotive designs. Lead-free (Pb-free) reflow profile per J-STD-020.