PIC32MX130F256B-I/SS
PIC32MX130F256B-I/SS - 32-bit 40MHz MCU, 256KB Flash | Microchip
The Microchip Technology PIC32MX130F256B-I/SS is a 32-bit MIPS32 M4K microcontroller running up to 50 MHz (40 MHz in this I-temp grade) with 256 KB of Flash and 16 KB of SRAM, packaged in a 28-pin SSOP (5.30 mm body). It belongs to the PIC32MX1XX/2XX family and combines a high-performance 32-bit RISC core with rich on-chip peripherals including a 10-bit ADC, two I2S/SPI modules, two UART, two SPI, two I2C, a Parallel Master Port (PMP), USB, and Peripheral Pin Select (PPS) functionality for flexible signal routing.
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile working memory (SRAM), and a range of analog and digital peripherals. Within the broader semiconductor taxonomy, MCUs sit under microcontrollers, which are a sub-category of embedded processors, which in turn fall under the integrated circuit family. PIC32MX devices specifically use the MIPS32 M4K architecture and are positioned as Microchip's mainstream 32-bit MCU line, bridging 8-bit PIC16/PIC18 designs and higher-performance ARM-based families.
Key features of the PIC32MX130F256B-I/SS include 256 KB Flash, 16 KB SRAM, 40 MHz CPU speed (up to 50 MHz in the 50I grade), 0.5 mA/MHz typical active current, on-chip 1% RC oscillator, separate PLLs for CPU and USB clocks, 4-channel hardware DMA with automatic data size detection, configurable watchdog timer with on-chip low-power RC oscillator, and multiple power management modes including deep sleep. The PPS block allows remapping of most digital peripherals to a wide range of physical pins, simplifying PCB routing in space-constrained designs.
The device supports industrial temperature operation (-40 °C to +85 °C), 3.3 V typical core supply, and integrates multiple analog blocks such as a 10-bit 1 Msps ADC with up to 13 input channels, comparators, and a charge time measurement unit (CTMU) for capacitive touch applications. Hardware multiply/divide and a single-cycle 32-bit ALU deliver up to 83 DMIPS at 50 MHz, making the device well-suited for real-time control loops.
Typical applications include USB audio class devices, low-cost capacitive touch user panels, sensor hubs, low-power industrial controllers, graphical user interfaces using the Parallel Master Port, home appliance controllers, and consumer electronics that previously required a 16-bit MCU but benefit from 32-bit performance at similar BOM cost. The integrated USB 2.0 full-speed controller and ample SRAM also suit small TCP/IP stacks with appropriate firmware libraries.
When designing with this device, prefer an external 8 MHz or 10 MHz crystal when USB is required to meet the ±0.25% clock accuracy spec, since the internal 8 MHz oscillator alone is not USB-accurate. Reserve a footprint for a 12 pF crystal load capacitor pair and follow the SSOP-28 thermal pad layout even though the device has no exposed thermal pad.
This page consolidates distributor pricing, drop-in package-compatible alternatives, application notes, and practical design considerations not found in the manufacturer datasheet alone, helping engineers evaluate sourcing risk and second-source options for new designs.
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