Texas Instruments MSP430x1xx instruction

System Reset and Initialization

Figure 2−5. Block Diagram of (Non)-Maskable Interrupt Sources

ACCV
	ACCVIFG
	S
FCTL1.1
	ACCVIE
IE1.5
	Clear
PUC			Flash Module
RST/NMI
			POR	PUC
			KEYV	VCC
						PUC
			System Reset
			Generator			POR
						POR
	NMIIFG
	S					NMIRS
						NMIRS
IFG1.4	WDTTMSEL
	WDTTMSEL
	Clear	WDTNMI	WDTQn	EQU	PUC	POR
	WDTNMIES	WDTNMI	WDTQn	EQU	PUC	POR
PUC
	NMIIE
			WDTIFG
IE1.4			S			IRQ
IE1.4
	Clear
	Clear	IFG1.0
			Clear
PUC		WDT
	Counter	WDT
OSCFault	Counter
OSCFault		POR
		POR
	OFIFG
	S
IFG1.1
		IRQA
	OFIE	WDTTMSEL
	OFIE
			WDTIE
IE1.1
	Clear	IE1.0
		IE1.0	Clear
PUC	NMI_IRQA		Clear
PUC
	Watchdog Timer Module		PUC
	Watchdog Timer Module

IRQA: Interrupt Request Accepted

2-8	System Resets, Interrupts, and Operating Modes

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 5. Block Diagram of Non-Maskable Interrupt Sources

Models: MSP430x1xx

Figure 2−5. Block Diagram of (Non)-Maskable Interrupt Sources

MSP430x1xx specifications