AS5013 datasheet(13/50 Pages) AMSCO

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[v2-00] 2021-Apr-19

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AS5013 − Detailed Description

I²C Interface

The AS5013 supports the 2-wire high-speed I²C protocol in

device mode, according to the NXP specification UM10204.

The host MCU (master) has to initiate the data transfers. The

7-bit device address of the AS5013 depends on the state at the

pin ADDR.

ADDR = 0

→ Slave address =‘100 0000’ (40h)

ADDR = 1

→ Slave address =‘100 0001’ (41h)

For other I²C addresses, please contact ams.

Supported modes (slave mode):

• Random/Sequential Read

• Byte/Page Write

• Standard Mode: 0 to 100kHz clock frequency

• Fast Mode: 0 to 400kHz clock frequency

• High Speed: 0 to 3.4MHz clock frequency

The SDA signal is bidirectional and is used to read and write the

serial data. The SCL signal is the clock generated by the host

MCU, to synchronize the SDA data in read and write mode. The

maximum I²C clock frequency is 3.4MHz, data are triggered on

the rising edge of SCL.

Figure 13:

I²C Timing Diagram for FS-Mode

SDA

SCL

Start

Stop

tBUF

tLOW

tHD.STA

tHIGH

tSU.DAT

tSU.STA

tHD.STA

tSU.STO

Repeated

Start

tHD.DAT

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