ATMEGA16M1_1 Datasheet, PDF (269/365 Pages) ATMEL Corporation – 8-bit Microcontroller with 16K/32K/64K Bytes In-System Programmable Flash

ATmega16/32/64/M1/C1
• Bit 3– AC3O: Analog Comparator 3 Output Bit
AC3O bit is directly the output of the Analog comparator 2.
Set when the output of the comparator is high.
Cleared when the output comparator is low.
• Bit 2– AC2O: Analog Comparator 2 Output Bit
AC2O bit is directly the output of the Analog comparator 2.
Set when the output of the comparator is high.
Cleared when the output comparator is low.
• Bit 1– AC1O: Analog Comparator 1 Output Bit
AC1O bit is directly the output of the Analog comparator 1.
Set when the output of the comparator is high.
Cleared when the output comparator is low.
• Bit 0– AC0O: Analog Comparator 0 Output Bit
AC0O bit is directly the output of the Analog comparator 0.
Set when the output of the comparator is high.
Cleared when the output comparator is low.
20.4.6
Digital Input Disable Register 0 – DIDR0
Bit
Read/Write
Initial Value
7
ADC7D
R/W
0
6
5
ADC6D ADC5D
ACMPN1D ACMPN0D
AMP2ND
R/W
R/W
0
0
4
ADC4D
R/W
0
3
2
ADC3D ADC2D
ACMPN2D ACMP2D
R/W
R/W
0
0
1
ADC1D
0
ADC0D
ACMPN3D
R/W
R/W
0
0
DIDR0
• Bit 6, 5, 3, 2, 0 – ACMPN1D, ACMPN0D, ACMPN2D, ACMP2D and ACMPN3D:
ACMPN1, ACMPN0, ACMPN2, ACMP2 and ACMPN3 Digital Input Disable
When this bit is written logic one, the digital input buffer on the corresponding Analog pin is dis-
abled. The corresponding PIN Register bit will always read as zero when this bit is set. When an
analog signal is applied to one of these pins and the digital input from this pin is not needed, this
bit should be written logic one to reduce power consumption in the digital input buffer.
20.4.7
Digital Input Disable Register 1– DIDR1
Bit
Read/Write
Initial Value
7
6
5
4
3
2
1
0
-
AMP2PD ACMP0D AMP0PD AMP0ND ADC10D ADC9D ADC8D
DIDR1
ACMP1D AMP1PD AMP1ND
ACMP3D
-
-
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
• Bit 5, 2, 1: ACMP0D, ACMP1PD, ACMP3PD:
ACMP0, ACMP1P, ACMP3P Digital Input Disable
When this bit is written logic one, the digital input buffer on the corresponding analog pin is dis-
abled. The corresponding PIN Register bit will always read as zero when this bit is set. When an
analog signal is applied to one of these pins and the digital input from this pin is not needed, this
bit should be written logic one to reduce power consumption in the digital input buffer.
7647F–AVR–04/09
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