TPL0102 datasheet(20/48 Pages) TI2

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TPL0102

SLIS134C – MARCH 2011 – REVISED SEPTEMBER 2015

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Step

Hex

Binary

RWL (kΩ)

RHW (kΩ)

RWL/RHW

238

0xEEh

1110 1110

92.97

7.03

13.22

239

0xEFh

1110 1111

93.36

6.64

14.06

240

0xF0h

1111 0000

93.75

6.25

15.00

241

0xF1h

1111 0001

94.14

5.86

16.07

242

0xF2h

1111 0010

94.53

5.47

17.29

243

0xF3h

1111 0011

94.92

5.08

18.69

244

0xF4h

1111 0100

95.31

4.69

20.33

245

0xF5h

1111 0101

95.70

4.30

22.27

246

0xF6h

1111 0110

96.09

3.91

24.60

247

0xF7h

1111 0111

96.48

3.52

27.44

248

0xF8h

1111 1000

96.88

3.13

31.00

249

0xF9h

1111 1001

97.27

2.73

35.57

250

0xFAh

1111 1010

97.66

2.34

41.67

251

0xFBh

1111 1011

98.05

1.95

50.20

252

0xFCh

1111 1100

98.44

1.56

63.00

253

0xFDh

1111 1101

98.83

1.17

84.33

254

0xFEh

1111 1110

99.22

0.78

127.00

255 (full-scale)

0xFFh

1111 1111

99.61

0.3

255.00

7.5 Programming with I

7.5.1 I2C General Operation

7.5.1.1 I2C Interface

The TPL0102 has a standard bidirectional I2C interface that is controlled by a microcontroller in order to

configure the device and read the status of the device. Each device on the I2C bus, including this device, has a

specific device address to differentiate between other devices that may be on the I2C bus. Configuration of the

device is performed when the microcontroller addresses the device, then accesses the device’s internal Register

Maps, which have unique register addresses. The TPL0102 has multiple registers where data is stored, written,

or read. Please refer to the Register Map for more details.

The physical I2C interface consists of the serial clock (SCL) and serial data (SDA) lines. Both SDA and SCL lines

must be connected to VDD through a pull-up resistor. The size of the pull-up resistor is determined by the

amount of capacitance on the I2C lines (for further details, please refer to the I2C Bus Pullup Resistor Calculation

Application Report). Data transfer may be initiated only when the bus is not busy. For more detailed information

on I2C, please refer to the Understanding the I2C Bus Application Report.

1. Suppose a master wants to send information to the TPL0102:

•

Master addresses TPL0102 (slave)

•

Master-transmitter sends data to TPL0102 (slave-receiver)

•

Master terminates the transfer.

2. If a master wants to receive information from TPL0102:

•

Master addresses TPL0102 (slave)

•

Master-receiver receives data from TPL0102 (slave-transmitter)

•

Master terminates the transfer.

The master generates the timing for the SCL.

7.5.1.2 START and STOP Conditions

I2C communication with this device is initiated by the master sending a START condition and terminated by the

master sending a STOP condition. A high-to-low transition on the SDA line while the SCL is high defines a

START condition. A low-to-high transition on the SDA line while the SCL is high defines a STOP condition.

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