Comparator_A Registers

CACTL1, Comparator_A Control Register 1

7

6

5

4

3

2

1

0

CAEX

CARSEL

CAREFx

CAON

CAIES

CAIE

CAIFG

rw−(0)

rw−(0)

rw−(0)

rw−(0)

rw−(0)

rw−(0)

rw−(0)

rw−(0)

CAEX

Bit 7

Comparator_A exchange. This bit exchanges the comparator inputs and

 

 

inverts the comparator output.

CARSEL

Bit 6

Comparator_A reference select. This bit selects which terminal the VCAREF

 

 

is applied to.

 

 

When CAEX = 0:

 

 

0

VCAREF is applied to the + terminal

 

 

1

VCAREF is applied to the – terminal

 

 

When CAEX = 1:

 

 

0

VCAREF is applied to the – terminal

 

 

1

VCAREF is applied to the + terminal

CAREF

Bits

Comparator_A reference. These bits select the reference voltage VCAREF.

 

5-4

00

Internal reference off. An external reference can be applied.

 

 

01

0.25*VCC

 

 

10

0.50*VCC

 

 

11

Diode reference is selected

CAON

Bit 3

Comparator_A on. This bit turns on the comparator. When the comparator

 

 

is off it consumes no current. The reference circuitry is enabled or disabled

 

 

independently.

 

 

0

Off

 

 

1

On

CAIES

Bit 2

Comparator_A interrupt edge select

 

 

0

Rising edge

 

 

1

Falling edge

CAIE

Bit 1

Comparator_A interrupt enable

 

 

0

Disabled

 

 

1

Enabled

CAIFG

Bit 0

The Comparator_A interrupt flag

 

 

0

No interrupt pending

 

 

1

Interrupt pending

16-10Comparator_A

Page 356
Image 356
Texas Instruments MSP430x1xx manual CACTL1, ComparatorA Control Register

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.