Texas Instruments MSC1211 manual I/O Connectors and Signals, 1 J8 Serial0 RS-232 Connector

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I/O Connectors and Signals

3.3 I/O Connectors and Signals

The various connectors on the MSC1211EVM are described in this section.

3.3.1J8: Serial0 RS-232 Connector

The host PC communicates with the MSC1211EVM through this connector, which is a D-shell type, 9-pin female, pinned out in the usual manner. Some of the flow control lines are used for special purposes by the MSC1211EVM board; these are described in Table 3–4.

In the RS-232 electrical specification, –5V to –15V on a line indicates a logic high (mark), and +5V to +15V indicates logic low (space). Line states are de- scribed here according to their logical states.

If a non-handshaking RS-232 cable is used (i.e., one that connects only RD, TD, and signal ground), the board can still operate normally, but it cannot be reset by the host PC, and bootstrap firmware upgrading cannot be performed through the serial port.

Table 3–4. J8: RS-232 Port Pinout

Pin

Signal

RS-232

Direction

 

Number

Name

Name

(at board)

Function

 

 

 

 

 

1

DCD

Data Carrier Detect

Output

None

 

 

 

 

 

2

RD

Receive Data

Output

Serial data output to the host PC

 

 

 

 

 

3

TD

Transmit Data

Input

Serial data input from the host PC

 

 

 

 

 

4

DTR

Data Terminal Ready

Input

Connected to the reset circuit.

 

 

 

 

A low-to-high transition on this line

 

 

 

 

resets the MCU.

 

 

 

 

 

5

SG

Signal Ground

Power

Ground reference

 

 

 

 

 

6

DSR

Data Set Ready

Output

None

 

 

 

 

 

7

RTS

Request To Send

Input

Connected to PROG LOAD

 

 

 

 

function. Used to enter serial

 

 

 

 

programming mode.

 

 

 

 

A high-to-low transition resets the

 

 

 

 

MCU and puts it into serial

 

 

 

 

programming mode.

 

 

 

 

 

8

CTS

Clear To Send

Output

None

 

 

 

 

 

9

RI

Ring Indicator

Output

None

 

 

 

 

 

3-6

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Contents User’s Guide Important Notice EVM Important Notice EVM Warnings and Restrictions Read This First About This ManualTrademarks Contents Figures TablesIntroduction TopicMSC1211 Description EVM System OverviewPrototyping Area Power RequirementsAnalog Inputs Host Computer RequirementsUnpacking the MSC1211EVM Default Configration Quick Start Getting StartedJumper identifier Description Default Setting Default ConfigurationFactory Jumper Settings Unpacking the MSC1211EVMCD-Rom Contents Quick StartRide Raisonance Integrated Development Environment Downloader Operand Definitions Operand DefinitionJumpers Switches Connectors and Signals Circuit Descriptions OperationJumpers Jumper/Function Reference5 JMP5 Avdd Power Source Select 3 JMP3 I2C Data SDA Enable4 JMP3 I2C Data SCL Enable 6 JMP6 Dvdd Power Source SelectINT Switch SwitchesReset Switch 3 SW3 Configuration Switch5 SW5 Emulation and Control Switch SW5 Configuration Control SwitchPin Signal RS-232 Direction Number Name At board Function I/O Connectors and Signals1 J8 Serial0 RS-232 Connector J8 RS-232 Port Pinout2 J9 Serial1 RS-232 Connector B1 9V Battery Connector 3 J6, JMP5, JMP6, B1 Power ConnectorsUnregulated Power Input Connector Positive power supply input5 J7 External Reference Input 4 J4 Analog InputsJ4 Analog Inputs J7 External Reference Input6 TP1-6 Test Points 10.TP1-6 Test Points1 MSC1211 Power SupplyCircuit Descriptions Programming and Host CommunicationPhysical Description Schematics Processor SchematicPower and Analog Inputs Schematic Component Locations Printed Circuit Board LayoutPower-Supply CE Certification Bill of Materials Bill of MaterialsPhysical Description JMP1-JMP4

MSC1211 specifications

Texas Instruments MSC1211 is a highly integrated, low-power microcontroller designed specifically for applications requiring high accuracy and precision in signal processing. As a member of the Texas Instruments Microcontroller family, the MSC1211 targets industrial automation, medical instrumentation, and portable measurement devices, making it a versatile choice for designers across various industries.

One of the standout features of the MSC1211 is its 16-bit ADC (Analog-to-Digital Converter) that boasts a resolution of 16 bits, which enables the microcontroller to accurately convert analog signals into digital data. This high resolution makes it suitable for applications where precision is paramount, such as in medical devices that require accurate readings from sensors. The device can achieve sampling rates up to 1 kSPS (kilo Samples Per Second), making it efficient for real-time signal processing.

Another key characteristic of the MSC1211 is its low power consumption. The microcontroller employs advanced power management features, allowing it to operate in various power modes, making it ideal for battery-operated devices. The sleep mode dramatically reduces power consumption, extending the operational life of portable equipment significantly.

The MSC1211 features a built-in digital signal processor (DSP) that facilitates efficient data processing and filtering, enabling complex algorithms to be executed on the captured signals in real-time. This capability simplifies design considerations for developers, reducing the need for external DSP chips and enhancing system integration.

Connectivity is another significant aspect of the MSC1211. It supports standard communication protocols such as SPI (Serial Peripheral Interface) and I2C (Inter-Integrated Circuit), making it easy to interface with a variety of sensors and peripherals. This flexibility is crucial in today's interconnected world, allowing developers to design scalable systems that can accommodate future upgrades and enhancements.

Moreover, the microcontroller incorporates onboard memory, including RAM and Flash memory, ensuring ample storage for application codes and operational data. The flexibility in memory allocation allows developers to optimize their applications, balancing memory usage with processing speed.

In summary, the Texas Instruments MSC1211 microcontroller stands out for its high-resolution ADC, low power consumption, integrated DSP capabilities, and flexible communication options. These features make it an exceptional choice for applications in diverse fields such as medical devices, industrial automation, and portable measurement systems, ensuring precision and efficiency in performance.
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