Datasheet
Table Of Contents
- Content Guide
- 1 General Description
- 2 Ordering Information
- 3 Pin Assignment
- 4 Absolute Maximum Ratings
- 5 Operating Conditions
- 6 Register Description
- 6.1 Register Overview
- 6.2 Detailed Register Description
- 6.3 Serial Interface
- 6.3.1 Bus Description
- 6.3.2 Data Interface
- 6.3.3 Bus Address
- 6.3.4 Read/Write Operation
- 6.3.5 Slave Operation
- 6.3.6 Slave Receiver Mode
- 6.3.7 Slave Transmitter
- 6.3.8 Alert Function
- 6.3.9 High Speed Mode
- 6.3.10 General Call
- 6.3.11 Start Byte
- 6.3.12 Timeout Function
- 6.3.13 Bus Conditions
- 6.3.14 Timing Characteristics
- 6.3.15 Timing Diagrams
- 7 Application Information
- 8 Package Drawings & Markings
- 9 Revision Information
- 10 Legal Information
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AS621x
Application Information
Datasheet • PUBLIC
DS000677 • v2-00 • 2020-Feb-24
36 │ 31
7 Application Information
Figure 34:
Application Example
In Figure 34 the connections of the AS621x temperature sensors to a microcontroller and the supply
voltage are shown.
The AS621x is connected to a microcontroller via an I²C bus (SDA and SCL only). Additionally the
Alert output can also be used for temperature monitoring (e.g. using the interrupt mode, refer to IM bit
settings), an example is given in Figure 34 where the Alert output is connected to microcontroller.
The I²C address of the AS621x can be selected by connecting the ADD0 and ADD1 to different pins
(refer to Figure 28 for details). These pins must not be left unconnected.
Micro-
controller
(Bus Master)
VDD
10nF
VDD
Address Select 0
Slave
Serial
Interface
ALERT
Interrupt
Pull-up resistors
R
PU
SDA
VDD
ADD0
SCL
ADD1/
ALERT
VSS
AS621
x
Address Select 1