Interrupt Logic

Figure 2±8 provides an overview of the interrupt control sequence. INT0 is the highest priority interrupt, and INT7 is the lowest priority interrupt.

Figure 2±8. Interrupt Initialization Sequence

INTD

CLEAR

instruction

 

 

 

SET

 

 

 

 

 

 

 

INTE

 

instruction

 

 

 

 

 

Interrupt

Service

Routine

(1 of 8)

INTE

IRET

Global Interrupt Enable

CLEAR

Interrupt-Trigger Event

•Internal Timer Underflow

•External Input Falling-Edge

•External Input Rising-Edge

•Software Write Instruction²

SET BIT

CLEAR BIT

INT Flag bits (IFR)

 

 

Associated With the Interrupt-Trigger Event

 

 

 

 

Interrupt Flag Register (0x39)

INT7 INT6 INT5 INT4 INT3 INT2 INT1 INT0

INT Mask bits (IMR)

Specific Enable for Interrupt Service

Interrupt / General Control Register (0x38)²

INT7 INT6 INT5 INT4 INT3 INT2 INT1 INT0

Interrupt Service Branch

Highest Priority INT is Selected From

Among Those Flagged and Enabled.

Program Branches to Location

Stored in Interrupt Vector.

Interrupt Vector Storage

0x7FF0 0x7FF2 0x7FF4 0x7FF6 0x7FF1 0x7FF3 0x7FF5 0x7FF7

² The port-addressed write instruction (OUT) can be used to SET or CLEAR bits in the IFR and IMR.

MSP50C614 Architecture

2-25

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Texas Instruments MSP50C614 manual ±8. Interrupt Initialization Sequence
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MSP50C614 specifications

The Texas Instruments MSP50C614 is a microcontroller that belongs to the MSP430 family, renowned for its low power consumption and versatile functionality. Primarily designed for embedded applications, this microcontroller is favored in various industries, including consumer electronics, industrial automation, and healthcare devices.

One of the standout features of the MSP50C614 is its ultra-low power technology, which enables it to operate in various power modes. This makes it ideal for battery-powered applications, where energy efficiency is crucial. The MSP430 architecture allows for a flexible power management system, ensuring that energy is conserved while providing robust performance.

The MSP50C614 is equipped with a 16-bit RISC CPU that delivers high performance while maintaining low power usage. With a maximum clock frequency of 16 MHz, it can execute most instructions in a single cycle, resulting in swift operation and responsive performance. This microcontroller also comes with a generous flash memory capacity, allowing developers to store large amounts of code and data conveniently.

In terms of peripherals, the MSP50C614 is highly versatile. It features a range of digital and analog input/output options, including multiple timers, GPIO ports, and various communication interfaces like UART, SPI, and I2C. This extensive set of peripherals allows for seamless integration with other components and simplifies the design of complex systems.

The integrated 12-bit Analog-to-Digital Converter (ADC) stands out as a valuable characteristic of the MSP50C614. This feature enables the microcontroller to convert physical analog signals into digital data, making it particularly useful for sensing applications and real-time monitoring.

Another noteworthy technology employed in the MSP50C614 is its support for low-voltage operations. With a broad supply voltage range, this microcontroller can function efficiently in diverse environments and is suitable for low-power applications, enhancing its practicality.

Moreover, Texas Instruments provides software support in the form of Code Composer Studio and various libraries that make it easier for developers to program and utilize the MSP50C614 effectively.

In summary, the Texas Instruments MSP50C614 microcontroller is a powerful, low-power solution equipped with the features and technologies necessary for efficient operation in a wide array of applications. Its blend of performance, flexibility, and energy efficiency makes it a popular choice among engineers and designers looking to create innovative, sustainable designs in the rapidly evolving tech landscape.
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