PIC32MX170F512LT-I/PF
PIC32MX170F512LT-I/PF - 32-Bit MCU, 512KB Flash, 100-TQFP | Microchip
The Microchip Technology PIC32MX170F512LT-I/PF is a 32-bit MIPS microcontroller built on the MIPS32 M4K core, delivering up to 50 MHz / 83 DMIPS of processing performance. Housed in a 100-pin TQFP (14x14 mm) package, it integrates 512 KB of Flash program memory, 64 KB of SRAM, and a rich set of digital and analog peripherals including two I2S interfaces, four SPI/I2S modules, USB, and a 10-bit ADC. The device operates from 2.3V to 3.6V and is qualified over the -40°C to +85°C industrial temperature range.
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and integrated peripherals such as timers, communication controllers, and analog interfaces. The PIC32 family extends the legacy PIC architecture into the 32-bit MIPS domain, occupying the upper end of Microchip's 8-bit/16-bit/32-bit MCU hierarchy alongside the PIC24 and dsPIC product lines. The M4K core combines deterministic interrupt response with Harvard bus architecture and a 5-stage pipeline, while Peripheral Pin Select (PPS) remapping allows flexible assignment of digital peripherals to physical pins, simplifying PCB layout.
Key features include up to 50 MHz core operation, 512 KB self-programmable Flash, 64 KB SRAM, a Parallel Master Port (PMP) with dual read/write buffers for graphics interfaces, an 8-bit Parallel Master Port, USB 2.0 Full-Speed Device/Host/OTG support, a 10-bit 1 Msps ADC with 28 channels, five 16-bit timers/counters, two I2S modules for audio codec interfacing, four SPI modules, two I2C modules, and four UART modules. PPS is supported on most digital peripherals.
From an architectural standpoint, the device includes a 5-stage pipeline, hardware multiply/divide, and a Memory Management Unit that maps Flash and RAM into separate regions. The integrated 40 MHz internal RC oscillator reduces external component count, while the on-chip 32 kHz low-power oscillator supports real-time clock and sleep-mode wake-up. The Charge Time Measurement Unit (CTMU) provides touch-sensing and capacitance measurement capability, expanding the device's role in human-machine interface designs.
Typical applications include industrial control and Human-Machine Interface (HMI) panels with TFT LCD, audio playback with I2S codecs, USB peripherals, sensor hubs, low-cost graphics terminals, motor control, and IoT edge nodes. The wide peripheral set, PMP, and 1 Msps ADC also suit data-acquisition front-ends and consumer devices requiring USB connectivity.
When designing with this part, allocate sufficient decoupling capacitance near VDD pins (typically 0.1 µF and 10 µF combinations) and ensure trace lengths to the 32 kHz crystal are short and symmetrical to minimize jitter. The PIC32MX170F512LT-I/PF supports MPLAB X IDE, MPLAB Harmony framework, and a mature peripheral library, accelerating firmware development.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet to help engineers select and qualify the PIC32MX170F512LT-I/PF for production.
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