ATA6617-P3QW Atmel, ATA6617-P3QW Datasheet - Page 213

• Manufacturer Part Number: ATA6617-P3QW
• Description: MCU W/LIN TX/5V REG/WTCDG 38VQFN
• Manufacturer: Atmel
• Series: AVR® ATA66 LIN-SBCr

Specifications of ATA6617-P3QW

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, LIN, SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 38-VQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.17.2.2
4.17.2.3
4.17.2.4
4.17.3
4.17.3.1
9132D–AUTO–12/10
Control Register
Current Source for Low Cost Transducer
Voltage Reference for External Devices
Threshold Reference for Internal Analog Comparator
AMISCR – Analog Miscellaneous Control Register
An external transducer based on a variable resistor can be connected to the Current Source.
This can be, for instance:
Using the Current Source with this type of transducer eliminates the need for additional parts
otherwise required in resistor network or Wheatstone bridge.
An external resistor used in conjunction with the Current Source can be used as voltage refer-
ence for external devices. Using a resistor in series with a lower tolerance than the Current
Source accuracy ( 2%) is recommended.
using standard values of resistors.
An external resistor used in conjunction with the Current Source can be used as threshold ref-
erence for internal Analog Comparator (see
page
AIN1 (positive Analog Compare input pin). Using a resistor in series with a lower tolerance
than the Current Source accuracy ( 2%) is recommended.
threshold references using standard values of resistors.
• Bit 0 – ISRCEN: Current Source Enable
Writing this bit to one enables the Current Source as shown in
to use DIDR register bit function when ISRCEN is set and to turn off the Current Source once
the ADC measurement is done.
Bit
Read/Write
Initial Value
• A thermistor, or temperature-sensitive resistor, used as a temperature sensor,
• A CdS photoconductive cell, or luminosity-sensitive resistor, used as a luminosity sensor,
• ...
236). This can be connected to AIN0 (negative Analog Compare input pin) as well as
R
7
0
-
R
6
0
-
R
5
0
-
Table 4-54
R
4
0
-
Section 4.19 “AnaComp - Analog Comparator” on
Atmel ATA6616/ATA6617
R
3
0
-
gives an example of voltage references
AREFEN XREFEN ISRCEN AMISCR
R/W
Table 4-54
2
0
Figure
R/W
4-81. It is recommended
1
0
gives an example of
R/W
0
0
213