I C

2

MSP430F2112

TMP104D

TMP104C

TMP104B

TMP104A

10-Pin

Connector

JTAG Header

One-Wire UART

TMP104EVM Hardware Setup

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2.1

Theory of Operation for the TMP104 Hardware

Figure 3 shows the basic interactions that occur on the TMP104 Test Board. The board requires power

and I

communicate with the SM-USB-DIG and the TMP104 Test Board. In addition, test points allow for

application-specific connections to be used on the TMP104 Test Board.

Figure 3. TMP104EVM Board Block Diagram

2.2

Signal Definitions of H1 (10-Pin Male Connector Socket)

Table 3 shows the pinout for the 10-pin connector socket used to communicate between the TMP104EVM

and the SM-USB-DIG. It should be noted that the TMP104EVM uses only the necessary I

communication lines (pins 1 and 3) and the V

to the TMP104.

Table 3. H1 Signal Definition for TMP104EVM

Pin on U1

Signal

Description

1

I2C_SCL

2

CTRL/MEAS4

GPIO: control output or measure input

3

I2C_SDA1

4

CTRL/MEAS5

GPIO: control output or measure input

5

SPI_DOUT1

SPI data output (MOSI)

Switchable DUT power supply: +3.3 V, +5 V,

6

7

SPI_CLK

SPI clock signal (SCLK)

8

GND

Power return (GND)

9

SPI_CS1

SPI chip-select signal (CS)

10

SPI_DIN1

SPI data input (MISO)

(1)

When V

4

TMP104EVM Evaluation Board and Software Tutorial

SBOU118

– October 2011

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