ATTINY20-EK1 Atmel, ATTINY20-EK1 Datasheet - Page 111
ATTINY20-EK1
Manufacturer Part Number
ATTINY20-EK1
Description
KIT EVAL TOUCH ATTINY20
Manufacturer
Atmel
Datasheet
1.ATTINY20-EK1.pdf
(224 pages)
Specifications of ATTINY20-EK1
Sensor Type
*
Sensing Range
*
Interface
*
Sensitivity
*
Voltage - Supply
*
Embedded
*
Utilized Ic / Part
*
Silicon Manufacturer
Atmel
Core Architecture
AVR
Core Sub-architecture
TinyAVR
Kit Contents
Board
Svhc
No SVHC (15-Dec-2010)
Mcu Supported Families
ATtiny20
Tool / Board Applications
Microcontroller
Rohs Compliant
Yes
Tool Type
Development Kit
Cpu Core
AVR 8
Data Bus Width
8 bit
Processor To Be Evaluated
ATtiny20
Interface Type
Touch
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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14.2.3
8235B–AVR–04/11
DIDR0 – Digital Input Disable Register 0
• Bit 6 – HLEV: Hysteresis Level
When enabled via the HSEL bit, the level of hysteresis can be set using the HLEV bit, as shown
in
Table 14-3.
• Bit 5 – ACLP
This bit is reserved for QTouch, always write as zero.
• Bit 4 – Res: Reserved Bit
This bit is reserved and will always read as zero.
• Bit 3 – ACCE
This bit is reserved for QTouch, always write as zero.
• Bit 2 – ACME: Analog Comparator Multiplexer Enable
When this bit is written logic one and the ADC is switched off (ADEN in ADCSRA is zero), the
ADC multiplexer selects the negative input to the Analog Comparator. When this bit is written
logic zero, AIN1 is applied to the negative input of the Analog Comparator. For a detailed
description of this bit, see
• Bit 1 – ACIRS1
This bit is reserved for QTouch, always write as zero.
• Bit 0 – ACIRS0
This bit is reserved for QTouch, always write as zero.
• Bits 2:1 – ADC2D, ADC1D: ADC 2/1 Digital input buffer disable
When this bit is written logic one, the digital input buffer on the AIN1/0 pin is disabled. The corre-
sponding PIN Register bit will always read as zero when this bit is set. When used as an analog
input but not required as a digital input the power consumption in the digital input buffer can be
reduced by writing this bit to logic one.
Bit
0x0D
Read/Write
Initial Value
Table
HSEL
0
1
14-3.
Selecting Level of Analog Comparator Hysteresis
ADC7D
R/W
7
0
HLEV
X
0
1
ADC6D
R/W
“Analog Comparator Multiplexed Input” on page
6
0
ADC5D
Hysteresis of Analog Comparator
Not enabled
20 mV
50 mV
R/W
5
0
ADC4D
R/W
4
0
ADC3D
R/W
3
0
ADC2D
R/W
2
0
ADC1D
R/W
1
0
109.
ADC0D
ATtiny20
R/W
0
0
DIDR0
111
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