MS1100

Hangzhou Ruimeng Technology Co.,Ltd

VERSION : V1.10

2023.05.22

http://www.relmon.com

- PAGE 10 -

Reading from the MS1100

Read the value in the result register and the configuration register. First address the MS1100, then read

three bytes from the device. The first two bytes are the result register’s contents, and the third byte is the

configuration register’s contents.

It is not required to read the configuration register. It is permissible to read fewer than three bytes during

a read operation. Reading more than three bytes from the MS1100 has no effect. All bytes from the fourth

byte will be FFH.

The timing diagram of typical read operation for the MS1100 is shown in Figure 2.

1

9

1

9

1

1

A2

A1

A0 R/W

0

0

D15 D14 D13 D12 D11 D10 D9

D8

Start By

Master

ACK By

MS1100

From

MS1100

ACK By

Master

Frame 1: I

2C Slave Address Bit

Frame 2: Result Register Upper 8Bit

SCL

SDA

Stop By

Master

1

9

1

9

D7

D6

D5

D4

D3

D2

D1

D0

ST/

DRDY

0

0

SC DR1 DR0 PGA1 PGA0

is set to 1

From

MS1100

From

MS1100

Frame 3: Result Register Lower 8Bit

Frame 4: Configuration Register (Optional)

ACK By

Master

SCL

(continued)

SDA

(continued)

ST/DRDY

Figure 2. Timing Diagram for Reading from the MS1100

Writing to the MS1100

Write to the configuration register. First address the MS1100, then write into one byte. The byte will be

written to the configuration register.

Writing more than one byte to the MS1100 has no effect. The MS1100 will ignore any byte after the first

byte. The timing diagram of typical write operation for the MS1100 is shown in Figure 3.

1

9

1

9

1

1

A2

A1

A0

R/W

0

0

Start By

Master

ACK By

MS1100

ACK By

MS1100

Frame 1: I

2C Slave Address Bit

Frame 2: Configuration Register

SCL

SDA

0

0

SC

DR1 DR0 PGA1 PGA0

ST/

DRDY

Stop By

Master

Figure 3. Timing Diagram for Writing to the MS1100