MSP430F122IDWR — 16-bit MCU for legacy industrial control
On-chip peripherals include POR, PWM, WDT, SPI, and UART/USART, plus a slope A/D converter. This is a legacy part commonly found in sensor interfaces, low-power data loggers, and simple control loops where the 16-bit core and low pin count keep the BOM lean.
Procurement for this part runs through independent distribution and surplus inventory channels.
Peripheral set and memory — what fits and what does not
With 4 KB Flash and 256 bytes of RAM, this part is sized for a single control loop or a small state machine with a UART or SPI link to a host. The 22 I/O lines give enough headroom for a 16-bit parallel LCD bus or a keypad matrix plus a few sensors. The slope A/D is a low-resolution converter — it works for battery monitoring or temperature thresholds but not for precision analog acquisition.
28-SOIC wide-body — footprint and storage
The supplier device package is 28-SOIC.