PIC32MX530F128LT-50I/PT
PIC32MX530F128LT-50I/PT - 50MHz 128KB Flash 32-bit MCU | Microchip
The Microchip PIC32MX530F128LT-50I/PT is a 32-bit MIPS M4K microcontroller running up to 50 MHz with 128 KB of Flash and 16 KB of SRAM, housed in a 100-pin TQFP (12x12 mm) package. It is part of the PIC32MX5xx family and integrates USB, I2S audio, CTMU, and a 10-bit ADC with up to 28 analog inputs on this 100-pin variant.
A 32-bit microcontroller (MCU) is an integrated circuit combining a high-performance CPU, Flash program memory, SRAM, and a rich set of on-chip peripherals (ADC, timers, communication controllers, I/O). In the system hierarchy, an MCU sits above 8/16-bit microcontrollers and below microprocessors (MPU), occupying the middle ground that balances deterministic real-time control with sufficient throughput for user interfaces, connectivity stacks, and signal processing. The PIC32MX5xx family is a MIPS32 M4K core-based line from Microchip's PIC32 portfolio, used widely in consumer, industrial, and USB-enabled embedded designs.
Key features of the PIC32MX530F128LT-50I/PT include: 128 KB Flash, 16 KB SRAM, 50 MHz core clock with 50 MIPS sustained performance, USB 2.0 full-speed OTG controller, I2S/PCM audio interface, CTMU for capacitive touch, a 10-bit 1 Msps ADC, multiple UART/SPI/I2C ports, and an operating voltage range of 2.5V to 3.6V. The 100-pin TQFP package exposes a wide peripheral pinout enabling simultaneous use of USB, Ethernet RMII (via peripheral sharing), parallel PMP bus, and 78 user I/O pins.
Architecturally, the device uses a single-cycle MIPS32 M4K core with separate instruction and data buses (Harvard-style prefetch), a 5-stage pipeline, and tightly-coupled peripherals mapped through DMA, which offloads peripheral-to-memory transfers from the CPU. The 50 MHz core delivers 50 DMIPS, sufficient for USB stack handling, graphics UI, and protocol stacks such as TCP/IP or audio processing. Industrial temperature grade (-40C to +85C) is indicated by the -50I suffix.
Typical applications include USB peripherals and HID devices, audio playback/recording using I2S, capacitive-touch user interfaces with CTMU, sensor hubs with ADC scanning, industrial HMI panels with PMP display bus, and IoT edge nodes that require USB or I2S connectivity. Designers pick this part when they need USB + I2S + ADC in a single chip with ample I/O for a 100-pin board layout.
When designing with this device, ensure the 2.5V-3.6V supply is decoupled close to the VDD pins with 0.1uF + bulk caps. The USB D+/D- lines need 90 ohm differential impedance and ESD protection. The internal 8 MHz RC oscillator can be used for USB start-up, but a 48 MHz PLL clock is required for USB full-speed operation. The CTMU pins can be repurposed as standard digital I/O if touch sensing is not used.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes for the PIC32MX530F128LT-50I/PT in a form not found in the manufacturer datasheet alone.
USD $3,12
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