Texas Instruments MSP50C614 guide

Digital-to-Analog Converter (DAC)

DAC Control register
Address 0x34			(4-bit wide location)
			03	02	01	00

Set DAC resolution to	8 bits:		DM	E	0	0
Set DAC resolution to	9 bits:		DM	E	0	1
Set DAC resolution to 10 bits:			DM	E	1	0

DM : Drive Mode selection		(0 = C3x style		: 1 = C5x style)

E : pulse-density-modulation Enable (overall DAC enable) 0x0 : default state of register after RESET low

Bit 2 in the DAC control register is used to enable/disable the pulse-density modulation. This bit must be set in order to enable the overall functionality of the DAC. After RESET is held low, the default state of bit 2 is clear. In this state, the output at the DAC pins is guaranteed to be zero (no PDM pulsing). During DAC activity, the PDM enable bit may also be toggled at any time to achieve the zero state. In other words, toggling the PDM enable bit from high-to-low-to- high brings the DAC output to the known state of zero.

Note: PDM Enable Bit

By default, the PDM enable bit is cleared: DAC function is off.

Data values are output to the DAC by writing to the DAC data register, address 0x30. The highest-priority interrupt, INT0, is generated at the sampling rate governed by the ClkSpdCtrl and the DAC control register. The program in software is responsible for writing a correctly-scaled DAC value to the DAC data register, in response to each INT0 interrupt. The register at 0x30 is 16-bits wide. The data is written in sign-magnitude format. Bit 15 of the register is the sign bit. Bits 14 and 13 are the overflow bits. Bits 12 through 3 are the data-value bits: The MSB is bit 12, and the LSB is bit 5, 4, or 3, depending on the resolution.

DAC Data register

Address 0x30

(16-bit wide location)

Write Only

10 bit DAC resolution:

9 bit DAC resolution:

8 bit DAC resolution:

S : Sign bit

M : Most-significant data value

D ; Data (magnitude)

O : Overflow bits

L : Least-significant data value

X : ignored bits

The overflow bits function in different ways, depending on the drive mode selected. The two DAC drive modes are informally named C3x style and C5x

Peripheral Functions

3-9

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.

Texas Instruments MSP50C614 manual Overflow bits Least-significant data value Ignored bits

Models: MSP50C614