PIC32MX795F512LT-80I/PF: Microchip's Industrial-Grade 32-Bit Microcontroller

The PIC32MX795F512LT-80I/PF represents Microchip Technology's flagship 32-bit microcontroller solution, combining high computational power with extensive peripheral integration for demanding embedded applications. This detailed technical analysis covers everything engineers need to know about this MIPS32-based workhorse MCU.

Architectural Overview

At its core lies the MIPS32 M4K processor with:

• 5-stage pipeline architecture
• 1.56 DMIPS/MHz performance
• Hardware multiply/divide unit
• 32-bit data path with 32 general-purpose registers

The 80MHz clock speed delivers 128 MIPS performance, while the zero-wait-state flash access ensures maximum execution efficiency. The microcontroller implements a multi-layer AHB bus matrix that allows simultaneous access to different memory regions by multiple bus masters (CPU, DMA, Ethernet).

Memory Subsystem

Flash Memory (512KB):

• 2ms typical erase time (block)
• 25,000 erase/write cycle endurance
• Built-in Error Correction Code (ECC)
• Live update capability with dual partition support

SRAM (128KB):

• Split into multiple banks for concurrent access
• Retention capability in sleep modes
• ECC protection on critical sections

Advanced Connectivity

Ethernet MAC:

• 10/100 Mbps operation
• Dedicated DMA controller
• IEEE 1588 precision time protocol support

USB 2.0 OTG:

• Full-speed (12Mbps) and low-speed (1.5Mbps) modes
• On-chip transceiver
• 256-byte FIFO buffers

CAN 2.0B:

• Two independent controllers
• 32 message buffers
• Bit rates up to 1Mbps

Analog Features

The 10-bit ADC subsystem includes:

• 1Msps conversion rate
• 16 external + 1 internal channel
• Automatic scan mode
• Temperature sensor input

Development Ecosystem

Microchip provides comprehensive support through:

• MPLAB X IDE with XC32 compiler
• Harmony 3 software framework
• PIC32 starter kits (DM320004)
• Third-party toolchain support

Industrial Applications

This MCU excels in:

• Factory automation controllers
• Motor control systems (PWM modules)
• Industrial networking gateways
• Medical diagnostic equipment
• Automotive telematics

With its -40 C to +85 C operating range and robust ESD protection, the PIC32MX795F512LT-80I/PF delivers reliable performance in harsh environments. The 100-pin TQFP package offers optimal balance between I/O availability and board space requirements.

For engineers seeking a proven 32-bit solution with industrial-grade reliability and extensive connectivity options, the PIC32MX795F512LT-80I/PF represents an outstanding choice that combines Microchip's ecosystem advantages with MIPS processor performance.