MCHPPIC32MX270F256B-I/SP
Overview
The PIC32MX270F256B-I/SP is a 32-bit MIPS32 M4K-based microcontroller featuring 256KB of Flash and 64KB of RAM in a through-hole PDIP package. It includes integrated USB 2.0 OTG support and specialized peripherals like Peripheral Pin Select (PPS) for flexible I/O mapping.
Why Choose This Part
This MCU offers a high memory-to-pin ratio with 256KB Flash in a small 28-pin footprint. The Peripheral Pin Select (PPS) feature allows engineers to remap digital peripherals to almost any I/O pin, greatly simplifying PCB layout or breadboard wiring.
Applications
Key Specifications
Getting Started
Develop using the MPLAB X IDE and the XC32 compiler. Hardware debugging and programming can be performed via the PICkit 4 or ICD 4 tools connected to the ICSP pins. For evaluation, the Microchip Curiosity development board series supports similar PIC32MX families.
PIC32MX Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Flash | RAM | I/O Pins | Package | Speed | ADC/DAC | Stock |
|---|---|---|---|---|---|---|---|
| PIC32MX270F256B-I/SP (this part) | 256KB | 64K | 19 | DIP-28 | 40M | A/D 9x10b | 172 |
| PIC32MX795F512L-80I/PT (Microchip) | 512KB | 128K | 85 | TQFP-100 | 80M | A/D 16x10b | 24,856 |
| PIC32MX250F128B | 128KB | 32K | 19 | SSOP-28 | 40M | A/D 9x10b | 3,629 |
| PIC32MX470F512H-I/PT | 512KB | 128K | 49 | TQFP-64 | 80M | A/D 28x10b | 2,389 |
| PIC32MX170F256B-I/SP | 256KB | 64K | 21 | DIP-28 | 40M | A/D 10x10b | 171 |
| PIC32MX270F256B-50I/SP | 256KB | 64K | 19 | DIP-28 | 50M | A/D 9x10b | 275 |
| PIC32MX170F256B-50I/SP | 256KB | 64K | 21 | DIP-28 | 50M | A/D 10x10b | 83 |
| PIC32MX270F256D-50I/PT | 256KB | 64K | 33 | TQFP-44 | 50M | A/D 13x10b | 140 |
| PIC32MX250F128B-50I/SP | 128KB | 32K | 19 | DIP-28 | 50M | A/D 9x10b | 167 |
| PIC32MX470F512L-I/PT | 512KB | 128K | 81 | TQFP-100 | 80M | A/D 28x10b | 290 |
| PIC32MX440F256H-80I/PT | 256KB | 32K | 53 | TQFP-64 | 80M | A/D 16x10b | 768 |
| PIC32MX250F128D-I/PT | 128KB | 32K | 33 | TQFP-44 | 40M | A/D 13x10b | 1,328 |



