Texas Instruments MSP430x1xx manual 1. ADC10 Block Diagram

Models: MSP430x1xx

1 432
Download 432 pages 41.81 Kb
Page 389
Image 389

ADC10 Introduction

Figure 18−1. ADC10 Block Diagram

REFOUT

VeREF+

 

 

REFBURST

 

 

REF2_5V

 

 

 

 

 

 

REFON

 

 

 

 

 

 

 

ADC10SR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INCHx=0Ah

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VREF+

 

 

 

 

 

 

 

 

 

on

 

 

 

VCC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

1.5 V or 2.5 V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VREF−/

VeREF−

 

 

 

 

 

 

 

Reference

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INCHx

 

 

 

 

VCC

 

Ref_x

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

Auto

CONSEQx

 

VSS

11

10 01 00

SREF1

 

 

 

 

 

SREF0

 

ADC10OSC

 

 

 

 

 

 

 

 

 

A0

0000

SREF2

1

0

 

ADC10ON

 

ADC10SSELx

 

A1

0001

 

 

 

 

 

ADC10DIVx

 

 

 

A2

0010

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A3

0011

Sample

 

VR−

 

VR+

 

 

00

 

 

A4

0100

 

 

 

 

 

 

and

 

 

 

 

 

Divider

01

ACLK

 

A5

0101

 

10−bit SAR

 

 

A6

0110

Hold

 

 

/1 .. /8

10

MCLK

 

 

 

 

 

 

 

 

A7

0111

S/H

Convert

 

 

 

 

11

SMCLK

 

 

1000

 

 

ADC10CLK

 

 

1001

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1010

 

 

 

 

 

 

ISSH

 

SHSx

 

 

1011

 

 

 

 

BUSY

 

 

 

 

 

1100

 

 

 

 

 

 

 

 

ENC

 

 

1101

 

 

 

 

 

 

 

 

00

ADC10SC

 

1110

SAMPCON

 

Sample Timer

SHI

0

 

 

 

 

01

TA1

 

1111

 

 

 

 

 

 

 

 

 

 

 

/4/8/16/64

 

1

 

 

 

 

 

 

 

 

 

Sync

TA0

 

 

 

 

 

 

 

 

 

 

10

 

VCC

ADC10DF

ADC10SHTx MSC

 

 

 

11

TA2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INCHx=0Bh

 

 

ADC10MEM

 

Ref_x

 

 

R

Data Transfer

n

 

Controller

 

 

R

ADC10SA

 

 

Halt CPU

 

 

VSS

ADC10CT ADC10TB ADC10B1

RAM, Flash, Peripherials

ADC10 18-3

Page 389
Image 389
Texas Instruments MSP430x1xx manual 1. ADC10 Block Diagram

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.