| PartNumber | MSP430G2121IRSA16T | MSP430G2121IRSA16R | MSP430G2121IRSAQ1 |
| Description | 16-bit Microcontrollers - MCU Mixed Signal Micro controller | 16-bit Microcontrollers - MCU Mixed Signal Micro controller | IC MCU 16BIT 1KB FLASH 16QFN |
| Manufacturer | Texas Instruments | Texas Instruments | - |
| Product Category | 16-bit Microcontrollers - MCU | 16-bit Microcontrollers - MCU | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | QFN-16 | QFN-16 | - |
| Series | MSP430G2121 | MSP430G2121 | - |
| Core | MSP430 | MSP430 | - |
| Data Bus Width | 16 bit | 16 bit | - |
| Maximum Clock Frequency | 16 MHz | 16 MHz | - |
| Program Memory Size | 1 kB | 1 kB | - |
| Data RAM Size | 128 B | 128 B | - |
| ADC Resolution | No ADC | - | - |
| Number of I/Os | 10 I/O | 10 I/O | - |
| Operating Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Reel | Reel | - |
| Program Memory Type | Flash | - | - |
| Brand | Texas Instruments | Texas Instruments | - |
| Data RAM Type | RAM | - | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of Timers/Counters | 1 Timer | 1 Timer | - |
| Processor Series | 2 Series | 2 Series | - |
| Product Type | 16-bit Microcontrollers - MCU | 16-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 250 | 3000 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Tradename | MSP430 | MSP430 | - |
| Watchdog Timers | No Watchdog Timer | No Watchdog Timer | - |
| Unit Weight | 0.001764 oz | 0.001764 oz | - |