15.3 I2C Module Registers

I2C Module Registers

The I2C module registers are listed in Table 15−4.

Table 15−4.I 2C Registers

Register	Short Form	Register Type	Address	Initial State
I2C interrupt enable	I2CIE	Read/write	050h	Reset with PUC
I2C interrupt flag	I2CIFG	Read/write	051h	Reset with PUC
I2C data count	I2CNDAT	Read/write	052h	Reset with PUC
USART control	U0CTL	Read/write	070h	001h with PUC
I2C transfer control	I2CTCTL	Read/write	071h	Reset with PUC
I2C data control	I2CDCTL	Read only	072h	Reset with PUC
I2C prescaler	I2CPSC	Read/write	073h	Reset with PUC
I2C SCL high	I2CSCLH	Read/write	074h	Reset with PUC
I2C SCL low	I2CSCLL	Read/write	075h	Reset with PUC
I2C data	I2CDRW/I2CDRB	Read/write	076h	Reset with PUC
I2C own address	I2COA	Read/write	0118h	Reset with PUC
I2C slave address	I2CSA	Read/write	011Ah	Reset with PUC
I2C interrupt vector	I2CIV	Read only	011Ch	Reset with PUC

15-20USART Peripheral Interface, I2C Mode

MSP430x1xx specifications

The Texas Instruments MSP430x1xx series is a family of ultra-low-power microcontrollers that are highly regarded in the embedded systems community for their versatility and performance. Designed for applications ranging from portable instrumentation to low-power industrial devices, the MSP430x1xx combines flexibility and efficiency with advanced features tailored for energy-sensitive applications.

One of the standout characteristics of the MSP430x1xx is its ultra-low-power operation. This series offers several low-power modes that can significantly extend battery life in portable devices. The microcontroller can be in active mode, low-power mode, or even in a deep sleep state, allowing developers to optimize power consumption based on the application's requirements. In fact, some configurations can operate at just a few microamps, making it ideal for battery-operated devices.

Another key feature is the 16-bit RISC architecture that provides powerful processing capabilities while maintaining a low power profile. The MSP430x1xx series supports a maximum clock speed of 16 MHz, allowing for efficient task execution while consuming minimal energy. This architecture ensures that programs run smoothly while the microcontroller remains energy efficient.

The MSP430x1xx is equipped with various integrated peripherals, including analog-to-digital converters (ADCs), timers, and communication interfaces like UART, SPI, and I2C. The inclusion of a powerful ADC enables the microcontroller to handle sensor readings with high accuracy, making it suitable for applications like environmental monitoring and medical devices. The integrated timers provide essential functionality for real-time applications, allowing for event-driven programming and precise timing control.

Memory options in the MSP430x1xx series are also robust, with configurations offering flash memory sizes from 1 KB to 64 KB. This flexibility allows developers to choose the optimal memory size for their specific applications, accommodating a wide range of requirements.

Additionally, the MSP430x1xx microcontrollers are designed with a wide operating voltage range, typically from 1.8V to 3.6V, making them compatible with various power sources and further enhancing their usability in diverse applications.

In summary, the Texas Instruments MSP430x1xx series of microcontrollers is an excellent choice for developers seeking low-power, high-performance solutions for embedded applications. With an efficient architecture, a rich set of peripherals, and flexible memory options, these microcontrollers are positioned to meet the growing demands of modern electronic designs, particularly in battery-powered and energy-sensitive applications.

Texas Instruments MSP430x1xx manual 15.3 I2C Module Registers, 4.I 2C Registers

Models: MSP430x1xx