Texas Instruments MSP430x1xx series, MSP430F1232IDWR, 16-bit MCU, 8 MHz, 8 KB Flash, 256 x 8 RAM, SPI/UART, 22 I/O, 1.8 V to 3.6 V, -40°C to 85°C, 28-SOIC.
| Parameter | Value |
|---|---|
| Series | MSP430x1xx |
| 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 | 8MHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| RAM size | 256 x 8 |
| Core size | 16-Bit |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | SPI, UART/USART |
| Number of i (O) | 22 |
| Core processor | MSP430 CPU16 |
| Case | 28-SOIC (0.295\", 7.50mm Width) |
| Data converters | A/D 8x10b |
| Program memory size | 8KB (8K x 8 + 256B) |
The 22 I/O lines and SPI plus UART serial interfaces cover the typical hookups for external sensors, ADCs, or a simple radio module. There is no I2C peripheral on this variant — if your sensor bus uses I2C, you will need an external bit-bang or a different MSP430 derivative.
For a BOM that needs a proven, low-power MCU without an obsolescence sword hanging over it, this part is a clean fit for new production builds.
The MSP430x1xx family is designed for ultra-low-power operation. The datasheet typical active-mode current at 8 MHz and 3 V is in the sub-milliamp range, with stop-mode draws in the microamp region. Exact figures depend on clock configuration and peripheral usage.
The two parts share the same core, memory, and peripherals. The difference is the package: MSP430F1232IDWR is in a 28-SOIC (7.50 mm wide) while MSP430F1232IPW is in a 28-TSSOP. The SOIC is easier to hand-solder and inspect; the TSSOP saves board area. Pin functions are identical.