Texas Instruments MSP430F5xx series 16-bit MCU, MSP430F5131IRSBR, CPUXV2 core at 25 MHz, 8 KB Flash, 1 KB RAM, 31 I/O, I²C/SPI/UART, 1.8V–3.6V supply, industrial -40°C to 85°C, 40-WQFN (5x5 mm).
| Parameter | Value |
|---|---|
| Series | MSP430F5xx |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.8V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 25MHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| RAM size | 1K x 8 |
| Core size | 16-Bit |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Connectivity | I²C, IrDA, SCI, SPI, UART/USART |
| Number of i (O) | 31 |
| Core processor | MSP430 CPUXV2 |
| Case | 40-WFQFN Exposed Pad |
| Program memory size | 8KB (8K x 8) |
The connectivity block covers I²C, IrDA, SCI, SPI, and UART/USART, so it can talk to common sensors, ADCs, or a host controller without extra glue. With 31 I/O lines in a 40-pin QFN, most of the package pins are usable for GPIO or alternate functions.
That means it's safe to specify into a new BOM or replenish an existing line without worrying about a forced redesign.
The CPUXV2 core runs at 25 MHz, giving a single-cycle instruction time of 40 ns for most operations.
It is supplied in a 40-WQFN (5x5 mm) package with an exposed pad, suitable for surface-mount assembly.