Texas Instruments MSP430FR5735IRHAR, 16-bit MSP430 CPUXV2 MCU, 8KB FRAM, 1K x 8 SRAM, 24MHz, 32 I/O, I²C/SPI/UART, 14x10b ADC, -40 to 85°C, 40-VQFN.
| Parameter | Value |
|---|---|
| Series | MSP430™ FRAM |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FRAM |
| Voltage - supply (Vcc (Vdd)) | 2V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 24MHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| RAM size | 1K x 8 |
| Core size | 16-Bit |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | I²C, IrDA, LINbus, SCI, SPI, UART/USART |
| Number of i (O) | 32 |
| Core processor | MSP430 CPUXV2 |
| Case | 40-VFQFN Exposed Pad |
| Data converters | A/D 14x10b |
| Program memory size | 8KB (8K x 8) |
FRAM writes at bus speed with no erase cycle and no wear-out mechanism, so you can log data or update firmware in the field without managing wear leveling or sector erase.
The 2 V floor lets it run from two alkaline cells or a lithium coin cell well into discharge.
Surface-mount assembly; the pad needs a ground-plane via stitch for thermal and electrical connection.
The suffix difference is packaging: IRHAR ships in Tape & Reel, while IRHR typically ships in a different reel or tube variant. Die, firmware, and electrical specs are identical.
Yes — MSP430FR5735 is the base product number; the IRHAR suffix specifies the 40-VQFN package and Tape & Reel delivery. The silicon and pinout are the same as the base device.