16-bit core with 2 KB Flash — sizing the firmware budget
The 24 general-purpose I/O pins and integrated peripherals (Brown-out Detect/Reset, PWM, WDT) make it a fit for simple supervisory or interface tasks in industrial and battery-powered designs.

Texas Instruments MSP430G2xx series 16-bit MCU, MSP430G2203IPW28, core processor MSP430 CPU16, speed 16MHz, program memory 2KB Flash, RAM 256 x 8, 24 I/O, I²C/SPI/UART, 1.8V-3.6V supply, -40°C~85°C, 28-TSSOP package.
| Parameter | Value |
|---|---|
| Series | MSP430G2xx |
| 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 | 16MHz |
| Package | Tube |
| RAM size | 256 x 8 |
| Core size | 16-Bit |
| Peripherals | Brown-out Detect/Reset, PWM, WDT |
| Connectivity | I²C, IrDA, LINbus, SCI, SPI, UART/USART |
| Number of i (O) | 24 |
| Core processor | MSP430 CPU16 |
| Case | 28-TSSOP (0.173\", 4.40mm Width) |
| Program memory size | 2KB (2K x 8) |
The 24 general-purpose I/O pins and integrated peripherals (Brown-out Detect/Reset, PWM, WDT) make it a fit for simple supervisory or interface tasks in industrial and battery-powered designs.
Within the MSP430G2xx family, higher-density variants like the MSP430G2452 (8 KB Flash, 512 B RAM) or MSP430G2553 (16 KB Flash, 512 B RAM) are pin-compatible in the same 28-TSSOP package, offering more memory headroom for firmware growth without a board respin.
Yes, the MSP430G2203 supports an external oscillator in addition to its internal oscillator, allowing you to use a crystal for applications that need tighter timing accuracy than the internal RC oscillator provides.