AS3412 datasheet(48/85 Pages) AMSOSRAM

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ams Datasheet

Page 47

[v1-00] 2016-Apr-06

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AS3412 − Detailed Description

2 Wire Serial Interface

In order to configure the device using the evaluation software

or a MCU the AS3412 features a serial two wire interface. The

I²C address for the device can be found in Figure 60.

Figure 60:

I²C Slave Address

I²C Slave Address Table: Shows the I²C address of the AS3412.

Protocol

Figure 61:

I²C Serial Interface Symbol Definition

Symbol Definition: The table shows the symbol definitions being used in the explanations for the data transfer

between master and slave.

7 Bit I²C Address

8 Bit Read Address

8 Bit Write Address

0x47

0x8F

0x8E

Symbol

Definition

Note

Start condition after stop

1 bit

Repeated start

1 bit

Device address for write

1000 1110b (8Eh)

Device address for read

1000 1111b (8Fh)

Word address

8 bit

AAcknowledge

1 bit

NNo Acknowledge

1 bit

reg_data

8 bit

data (n)

8 bit

Stop condition

1 bit

WA++

Increment word address internally

during acknowledge

AS3412 (=slave) transmits data

AS3412 (=slave) receives data

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