AS3687 datasheet(46/55 Pages) AMSCO

46 / 55 page

AS3687/87XM

Datasheet

www.austriamicrosystems.com/AS3687

1v3-4

45 - 54

Read Formats

−

Current-Address Read

−

Random-Read

−

Sequential-Read

DATA Input Delay and CLK Spike Filtering by Integrated RC Components

7.9.2 Device Address Selection

The serial interface address of the AS3687/87XM has the following address:

80h – Write Commands

81h – Read Commands

Figure

36 – Complete Serial Data Transfer

Start

Condition

Address

R/W

ACK

Data

ACK

Data

ACK

Stop

Condition

DATA

CLK

1-7

7.9.2.1 Serial Data Transfer Formats

Definitions used in the serial data transfer format diagrams are listed in the following table:

Table

19 – Serial Data Transfer Byte Definitions

Symbol

Definition

R/W (AS3687/87XM

Slave)

Notes

Start Condition after Stop

1 bit

Repeated Start

1 bit

Device Address for Write

10000000b (80h).

Device Address for Read

10000001b (81h)

Word Address

8 bits

Acknowledge

1 bit

Not Acknowledge

1 bit

reg_data

8 bits

data (n)

1 bit

Stop Condition

8 bits

WA++

Increment Word Address Internally

During Acknowledge

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