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ZAMC4100GA2R Folha de dados(PDF) 80 Page - Renesas Technology Corp

Nome de Peças ZAMC4100GA2R
Descrição Electrónicos  Actuator and Motor Controller
PDF  156 Pages
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Fabricante Electrônico  RENESAS [Renesas Technology Corp]
Página de início  http://www.renesas.com
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ZAMC4100GA2R Folha de dados(HTML) 80 Page - Renesas Technology Corp

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ZAMC4100 Datasheet
© 2016 Integrated Device Technology, Inc.
80
January 26, 2016
Diode Temperature Measurement on AIN3, AIN4
If the application requires external temperature measurements using a diode-based sensor, it can be connected
to input AIN3 or AIN4 (Figure 3.22). Both inputs have an internal current source that is enabled with bits
AIN3TMEN and AIN4TMEN in register AINCONF (Table 3.32). The current sources are internally controlled by
the ADC in order to provide two currents with a fixed ratio 1:10. This ratio is used for the calculation of the
temperature based on the measured results.
Figure 3.22 Using AIN3 and AIN4 for External Temperature Measurement
CS ratio
1:10
Temp.
Sensor
AIN3/4
VSSA
Int.Ref
VREF
ADC
VREFP
VREFN
ZAMC4100
AINxTMEN
VDD5V0
For more information about the temperature measurement including the LM135 and thermistors, refer to the
ZAMC4100 Application Note – ADC.
Table 3.32 AINCONF Register Bits Mapping
Name
AINCONF
Bit No
7
6
5
4
3
2
1
0
Bit name
Reset
0
0
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Address
0x10
R/W = Read/Write bit
Note: When the ADC conversion is running, the AINCONF register is accessed as
read-only.



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