It runs at 16 MHz and carries 4 KB of Flash program memory with 256 bytes of RAM — a combination sized for single-function sensor interfaces, simple control loops, or battery-monitoring nodes where code fits in a few kilobytes and the RAM budget is tight.
Texas Instruments MSP430F2121TPW 16-bit MCU, 16 MHz
MPNMSP430F2121TPW
Active
Texas Instruments MSP430F2xx series, MSP430F2121TPW, 16-bit MSP430 CPU16 MCU, 16 MHz, 4 KB Flash, 256 x 8 RAM, 16 I/O, 1.8V-3.6V, -40°C to 105°C, 20-TSSOP.
$3.3400Ref. price · indicative, final on quote
Packaging20-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
SeriesMSP430F2xx
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | MSP430F2xx |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.8V ~ 3.6V |
| Operating temperature | -40°C~105°C(TA) |
| Speed | 16MHz |
| Package | Tube |
| RAM size | 256 x 8 |
| Core size | 16-Bit |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of i (O) | 16 |
| Core processor | MSP430 CPU16 |
| Case | 20-TSSOP (0.173\", 4.40mm Width) |
| Data converters | Slope A/D |
| Program memory size | 4KB (4K x 8 + 256B) |
Product details
Frequently asked questions
What is the difference between MSP430F2121TPW and MSP430F2131TPW?
The MSP430F2131TPW is a higher-density sibling in the same family — it carries 8 KB of Flash and 256 B RAM versus the 4 KB Flash on the MSP430F2121TPW. Pin-compatible in the same 20-TSSOP package, so a firmware-only migration is possible if the application needs more program space.
Is MSP430F2121TPW RoHS compliant?
Yes, it is ROHS3 compliant per the listing, meeting the current EU restriction levels for hazardous substances.