PIC32MX320F128H-80I/MR
PIC32MX320F128H-80I/MR - 80MHz 32-bit MCU 128KB Flash | Microchip
The Microchip PIC32MX320F128H-80I/MR is a 32-bit MIPS M4K microcontroller running up to 80 MHz, integrating 128 KB of Flash program memory and 16 KB of SRAM, and housed in a 64-pin 9x9 mm VQFN package with exposed thermal pad. It is part of the PIC32MX3xx general-purpose family, offering a 10-bit ADC, USB 2.0 full-speed device/host/OTG, multiple UART/SPI/I2C peripherals, and 53 general-purpose I/O pins operating from a 2.5 V to 3.6 V supply.
What is a 32-bit PIC microcontroller? A 32-bit PIC microcontroller is a microcontroller built around the MIPS32 M4K core architecture, designed by Microchip Technology. Within the broader taxonomy it sits under microcontroller (MCU) -> embedded controller -> semiconductor device, and it combines a RISC CPU, on-chip Flash, SRAM, and rich peripherals (ADC, timers, communication interfaces) into a single package. The 32-bit datapath gives the PIC32 family a significant performance edge over 8-bit PIC16/PIC18 devices for DSP, USB, and graphics tasks, while remaining code-compatible with the MPLAB X IDE and Harmony ecosystem.
Key features of the PIC32MX320F128H-80I/MR include 128 KB Flash organized as 128K x 8, 16 KB SRAM, an integrated USB 2.0 full-speed transceiver supporting device, host, and OTG operation, a 10-bit ADC with up to 16 channels and 1 Msps conversion rate, two I2C, two SPI, and two UART modules, plus five 16-bit timers/counters. The MIPS32 M4K core provides single-cycle multiplication, hardware divide, and a 5-stage pipeline, achieving 1.56 DMIPS/MHz and 80 MHz / 1.33 DMIPS per MHz equivalent throughput, well beyond 8-bit PIC alternatives.
In terms of architecture and process, the PIC32MX3xx family uses a 0.18 µm flash process with on-chip voltage regulation to 1.8 V core from a 2.5-3.6 V supply. Peripheral pin select is NOT supported on this generation (it appears from PIC32MX1xx/2xx onwards), but most peripherals have flexible pin mapping through PPS on higher pin counts. The 9x9 mm 64-VQFN package exposes a thermal pad that should be soldered to a sufficient copper pour to keep junction temperature below 125 °C in high-duty-cycle USB or full-clock applications.
Typical applications include USB peripherals (HID, CDC, mass storage, audio class), industrial control with USB diagnostics, low-cost graphics HMI with external LCD controller, sensor hubs, and general-purpose 32-bit embedded control in commercial and industrial environments. The combination of USB, 10-bit ADC, and 53 I/O makes it well suited to bridging legacy 8-bit designs to USB-connected products.
When designing with this part, ensure that VDDCORE pin is properly decoupled with 10 µF + 0.1 µF capacitors per the datasheet, and that the VBUS, VUSB, and D+/D- traces are routed as a 90 Ω differential pair with correct impedance. The USB internal pull-up must be enabled in firmware for device mode. Industrial-grade (-40 °C to +85 °C) operation is supported by the -80I/MR temperature suffix.
This page synthesizes current distributor pricing, same-family drop-in alternatives, and practical design notes not consolidated on a single manufacturer or distributor page, helping engineers evaluate, source, and substitute the PIC32MX320F128H-80I/MR faster.
Cotización
Contacto