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[v1-03] 2015-Aug-10

AS3715 − Detailed Description – System Functions

Serial Control Interfaces

I²C Feature List

• Fast mode capability (max. SCL-frequency is 400kHz)

• 7+1-bit addressing mode

• 60h x 8-bit data registers (word address 0x00 - 0x60)

• Write formats: Single-Byte-Write, Page-Write

• Read formats: Current-Address-Read, Random-Read,

Sequential-Read

• SDA input delay and SCL spike filtering by integrated

RC-components

I²C Protocol

Figure 76:

I²C Symbol Definition

I²C Symbol Definition: Shows the symbols used in the following mode descriptions.

Symbol

Definition

Note

Start condition after stop

1 bit

Repeated start

1 bit

Device address for write

1000 0000b (80h)

Device address for read

1000 0001b (81h)

Word address

8 bit

Acknowledge

1 bit

No Acknowledge

1 bit

reg_data

8 bit

data (n)

8 bit

Stop condition

1 bit

WA++

Increment word address internally

During acknowledge

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