AS7000 datasheet(72/92 Pages) AMSCO

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ams Datasheet

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[v1-12] 2018-Feb-26

AS7000 − Detailed Description

I²C Mode

The AS7000 includes an I²C master and slave (independent)

hardware block. The pins name SDA and SCL in this section can

be mapped during runtime to the GPIO pins according to

Figure 89. ams SDK operates the I²C slave on GPIO2 (=SDA) and

GPIO3 (=SCL) and uses a default I²C address of 0x30 (7-bit

format; R/W bit has to be added) respectively 60h (8-bit format

for writing) and 61h (8-bit format for reading). It expects

external pullup resistors.

I²C Serial Control Interface

I²C Feature List:

Fast mode (400kHz) and standard mode (100kHz) support

7+1-bit addressing mode

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 91:

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

0110 0000b (60h)

Device address for read

0110 0001b (61h)

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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