May 12, 2025
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In today's rapidly evolving embedded systems market, the demand for high-performance, energy-efficient microcontrollers with robust peripherals is surging. The PIC32MX440F128H-80I/PT from Microchip Technology stands out as a premier 32-bit solution, combining an 80MHz MIPS32® M4K™ core with 128KB Flash and advanced connectivity options. Ideal for industrial automation, IoT edge devices, and consumer electronics, this MCU delivers 105 DMIPS performance while maintaining power efficiency. Discover how its integrated USB OTG, 16-channel ADC, and hardware DMA can streamline your next design.
The PIC32MX440F128H-80I/PT is a member of Microchip's PIC32MX4xx family, featuring:
Core: 32-bit MIPS32 M4K with 5-stage pipeline (105 DMIPS at 80MHz)
Memory: 128KB Flash + 32KB RAM (execute-in-place support)
Peripherals: USB 2.0 OTG with PHY, 16x10-bit ADC (1Msps), 5 timers
Packaging: 64-pin TQFP (10x10mm), industrial temperature range (-40°C to +85°C)
| Parameter | Specification | Source |
|---|---|---|
| Clock Speed | 80 MHz (max) | Microchip DS60001185F |
| Operating Voltage | 2.3V to 3.6V | Microchip datasheet Sect. 28.0 |
| ADC Channels | 16 (10-bit, 1Msps) | PIC32MX Family Reference Manual |
| I/O Pins | 51 programmable | Pinout diagram (DS60001185F) |
| Power Consumption | 0.5mA/MHz (Run mode typ.) | Microchip TB3209 |
When choosing between PIC32MX variants, consider:
Performance Needs: The 440F128H offers 105 DMIPS - sufficient for real-time control and moderate DSP tasks
Memory Requirements: 128KB Flash suits medium-complexity firmware (RTOS + protocol stacks)
Peripheral Mix: USB OTG PHY eliminates external components for host/device applications
Package Constraints: 64-pin TQFP balances I/O count with board space
| Model | Flash | Max Speed | USB | Price Index |
|---|---|---|---|---|
| PIC32MX440F128H | 128KB | 80MHz | OTG+PHY | 1.0x |
| PIC32MX470F512H | 512KB | 120MHz | OTG+PHY | 1.8x |
| PIC32MX250F128B | 128KB | 50MHz | Device-only | 0.7x |
Implementation: Leverages the 10-bit ADC for touchscreen sensing and USB OTG for host-mode peripheral connectivity. MIPS16e mode reduces code size for graphics libraries.
Implementation: Uses hardware DMA for ADC sampling of current sensors while maintaining low power consumption in SLEEP mode (RTCC for timekeeping).
Implementation: Combines USB PHY for cellular modem interface with SPI/I2C for sensor aggregation. 80MHz core handles TLS/encryption overhead.
According to Embedded Computing Design's 2023 survey, 32-bit MCUs now dominate 68% of new designs requiring:
Real-time performance (45% of respondents)
Integrated comms peripherals (39%)
Low-power modes (52%)
The PIC32MX440F128H-80I/PT addresses these needs while maintaining pin-compatibility with Microchip's 16-bit portfolio for migration paths.
Microchip's 2024 roadmap indicates continued PIC32MX support with:
Enhanced security features (AES accelerators)
Lower-power sleep currents (<5μA)
Extended temperature variants (-55°C to +125°C)
A: Yes, the 128KB Flash and 32KB RAM provide ample space for FreeRTOS and 2-3 middleware stacks. Microchip provides certified ports in MPLAB® Harmony.
A: The integrated PHY supports BC1.2 detection when configured properly via the USBOTG module registers.
A: Per DS60001185F Section 29.0, INL is ±1.5 LSB max at 1Msps with proper VREF filtering.
A: Yes, this device supports 2-wire (PGEC/PGED) and JTAG debugging via all current Microchip tools.
A: While reducing code size by ~40%, throughput decreases by ~15% due to instruction decompression. Critical loops can use 32-bit mode.
The PIC32MX440F128H-80I/PT delivers a balanced mix of performance, peripheral integration, and power efficiency for modern embedded designs. Its industrial temperature rating and robust ecosystem (MPLAB X IDE, Harmony framework) make it particularly suitable for:
Motor control systems
Medical handheld devices
Building automation controllers
For volume pricing or technical support, contact our team at [email protected].
