Texas Instruments MSP430FR68891IPN, MSP430™ FRAM series, 16-bit MCU, core CPUXV2, 16MHz, 128KB FRAM, 2K x 8 RAM, 63 I/O, 12x12b ADC, I²C/SPI/UART, 1.8V-3.6V, -40°C~85°C, 80-LQFP.
| Parameter | Value |
|---|---|
| Series | MSP430™ FRAM |
| Mounting | 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 | Tube |
| 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) | 63 |
| Core processor | MSP430 CPUXV2 |
| Case | 80-LQFP |
| Data converters | A/D 12x12b |
| Program memory size | 128KB (128K x 8) |
Its program memory is 128 KB of FRAM — a nonvolatile technology that combines the fast write speed and low power of SRAM with the retention of Flash, and it is byte-addressable. The 2 KB of conventional RAM handles stack and scratchpad data.
At the low end, 1.8 V is the minimum for FRAM read/write integrity — a brown-out detector (included in the peripheral set) resets the core if the rail dips below that threshold.
Within the MSP430 FRAM family, the base product number MSP430FR68891 defines the 128 KB FRAM and 80-LQFP footprint. Pin-compatible siblings with different memory densities (e.g., 64 KB or 256 KB FRAM) share the same package and peripheral set, allowing a drop-in upgrade or cost-down without a board spin.