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Texas Instruments MSP430G2121IN14 — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments MSP430G2121IN14 16-bit MCU, 16 MHz

MPNMSP430G2121IN14
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Texas Instruments MSP430G2xx series, MSP430G2121IN14, 16-Bit Microcontroller, 16MHz, 1KB (1K x 8) FLASH, 128 x 8 RAM, I²C, SPI, 10 I/O, 1.8V ~ 3.6V, -40°C ~ 85°C, Through Hole, 14-DIP (0.300", 7.62mm), 14-PDIP.

$1.7256Ref. price · indicative, final on quote
Texas Instruments MSP430G2121IN14 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

MSP430G2121IN14 specifications
ParameterValue
SeriesMSP430G2xx
MountingThrough Hole
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed16MHz
PackageTube
RAM size128 x 8
Core size16-Bit
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, SPI
Number of i (O)10
Core processorMSP430 CPU16
Case14-DIP (0.300\", 7.62mm)
Program memory size1KB (1K x 8)

Product details

16 MHz 16-bit MCU with 1 KB Flash — what the memory budget means

The 1 KB Flash is the smallest in the G2xx series — enough for a single control loop, a few sensor reads, or a simple state machine, but it rules out any RTOS or protocol stack beyond a basic I²C or SPI slave. The 128-byte RAM limits data buffers to a handful of bytes; expect to use Flash for lookup tables and constants. This part is aimed at cost-sensitive, low-pin-count embedded control where every byte of memory is budgeted.

Industrial temperature range and through-hole package

The 14-pin PDIP through-hole package is breadboard-friendly and easy to hand-solder, making it a common choice for prototyping and low-volume production.

On-chip peripherals and I/O

The device integrates a brown-out detect/reset, power-on reset, PWM timer, and watchdog timer. It offers 10 general-purpose I/O pins and serial connectivity via I²C and SPI.

No successor part has been designated.

Frequently asked questions

What is the closest pin-compatible alternative to MSP430G2121IN14 in the MSP430G2xx family?

Within the MSP430G2xx series, the MSP430G2131IN14 is a pin-compatible upgrade with 2 KB Flash and 128 bytes RAM, sharing the same 14-pin PDIP footprint and peripheral set. The MSP430G2201IN14 offers 2 KB Flash and 128 bytes RAM but lacks the I²C/SPI connectivity. For a direct drop-in with more program memory, the MSP430G2131IN14 is the closest match.