Texas Instruments MSP430FR5859IRHAT, 16-bit MSP430 CPUXV2 MCU, 16 MHz, 64KB FRAM, 2KB RAM, 33 GPIO, 14x12-bit ADC, I²C/SPI/UART, 1.8V–3.6V, -40°C to 85°C, 40-VQFN (6x6 mm).
| Parameter | Value |
|---|---|
| Series | MSP430™ FRAM |
| Mounting type | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FRAM |
| Voltage - supply (Vcc (Vdd)) | 1.8V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 16MHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| RAM size | 2K x 8 |
| Core size | 16-Bit |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Connectivity | I²C, IrDA, SCI, SPI, UART/USART |
| Number of i (O) | 33 |
| Core processor | MSP430 CPUXV2 |
| Case | 40-VFQFN Exposed Pad |
| Data converters | A/D 14x12b |
| Program memory size | 64KB (64K x 8) |
FRAM writes at bus speed without erase cycles, consumes less power per write than Flash or EEPROM, and retains data through power loss. For designs that log sensor data, store calibration constants, or support over-the-air firmware updates, FRAM eliminates the wear-leveling and write-cycle budgeting that Flash-based MCUs require. The 64 KB program space is complemented by 2 KB of SRAM for stack and temporary variables.
The MSP430FR5859IRHAT is flagged with an EOL lifecycle stage. The base product number MSP430FR5859 remains active, but this specific suffix variant is approaching end-of-life. Check last-time-buy windows and consider the reel-alternate MSP430FR5859IRHAR for continuity.
The supply voltage range is 1.8 V to 3.6 V on Vcc, covering single-cell Li-ion, two-cell alkaline, or regulated 3.3 V rails.
Both share the same silicon, package, and temperature grade. The difference is packaging: IRHAT ships in Tape & Reel and Cut Tape, while IRHAR is Tape & Reel only. For most production lines, they are functionally identical.
The core runs at 16 MHz, which is typical for the MSP430 FRAM family and sufficient for real-time control loops, sensor fusion, and communication protocol handling at moderate data rates.