MSP430F67621AIPNR — TI MSP430F6xx 16-Bit MCU, 25MHz, 64KB Flash, 80-LQFP
Texas Instruments MSP430F67621AIPNR, MSP430F6xx series, 16-bit MSP430 CPUXV2, 25MHz, 64KB FLASH / 4KB RAM, 3x24b Sigma Delta + 8x10b SAR ADC, 52 I/O, I²C/SPI/UART, LCD controller, DMA, 1.8–3.6V, 80-LQFP (12x12mm), -40°C to 85°C, Tape & Reel.
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Specifications
| Parameter | Value |
|---|---|
| Series | MSP430F6xx |
| Mounting type | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.8V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 25MHz |
| Package | Tape & Reel (TR) |
| RAM size | 4K x 8 |
| Core size | 16-Bit |
| Peripherals | Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT, 3x24b Sigma Delta Converter |
| Connectivity | I²C, IrDA, SPI, UART/USART |
| Number of i (O) | 52 |
| Core processor | MSP430 CPUXV2 |
| Case | 80-LQFP |
| Data converters | A/D 8x10b |
| Program memory size | 64KB (64K x 8) |
Frequently asked questions
Does the 85°C maximum rating cover a 75°C panel ambient environment?
The die rating is -40°C to 85°C TA. At 75°C ambient there is nominal headroom, but self-heating from the 25MHz core and any I/O load current reduces the effective margin. Thermal modelling of the specific board assembly should confirm the junction temperature stays within the 85°C limit. The internal DCO oscillator tolerance over temperature should also be verified against UART baud-rate accuracy requirements if the serial link is timing-critical.
What does the 64KB Flash and 4KB RAM split support in firmware terms?
64KB of FLASH accommodates typical compiled Studio v5/v6 metering firmware for single-phase or dual-phase energy measurement with LCD display, LCD driver, and communication stack. 4KB of RAM constrains the real-time data buffer size — verify the malloc footprint of the DMA scatter-gather buffers against this ceiling. Flash sector-erase endurance is specified in the datasheet endurance cycles table; applications that log frequently should check whether the expected write count over the product lifetime approaches that limit.
Are the 8x10b ADC channels shared with the sigma-delta converters, and can the DMA service both simultaneously?
The 8x10b SAR ADC and the three 24-bit sigma-delta converters occupy separate conversion paths. The DMA controller can service both converter families provided the DMA request channels are independently mapped — firmware teams targeting concurrent real-time logging of both ADC types should verify the bus arbitration priority for their silicon revision in the datasheet before scheduling the qualification build.