AT90CAN128-16AE ATMEL Corporation, AT90CAN128-16AE Datasheet - Page 281

• Manufacturer Part Number: AT90CAN128-16AE
• Description: 8-bit Avr Microcontroller With 128K Bytes of Isp Flash And CAN Controller.flash (Kbytes) 128 Vcc (V) 2.7-5.5 EEPROM (Kbytes) 4 SRAM (bytes) 4K CAN (mess. Obj.) 15
• Manufacturer: ATMEL Corporation

ADC Control and Status
Register B – ADCSRB
Digital Input Disable Register
0 – DIDR0
4250C–CAN–03/04
• ADC9:0: ADC Conversion Result
These bits represent the result from the conversion, as detailed in “ADC Conversion
Result” on page 275.
• Bit 7 – ADHSM: ADC High Speed Mode
Writing this bit to one enables the ADC High Speed mode. This mode enables higher
conversion rate at the expense of higher power consumption.
• Bit 2:0 – ADTS2:0: ADC Auto Trigger Source
If ADATE in ADCSRA is written to one, the value of these bits selects which source will
trigger an ADC conversion. If ADATE is cleared, the ADTS2:0 settings will have no
effect. A conversion will be triggered by the rising edge of the selected interrupt flag.
Note that switching from a trigger source that is cleared to a trigger source that is set,
will generate a positive edge on the trigger signal. If ADEN in ADCSRA is set, this will
start a conversion. Switching to Free Running mode (ADTS[2:0]=0) will not cause a trig-
ger event, even if the ADC Interrupt Flag is set
Table 103. ADC Auto Trigger Source Selections
• Bit 7:0 – ADC7D..ADC0D: ADC7:0 Digital Input Disable
When this bit is written logic one, the digital input buffer on the corresponding ADC pin is
disabled. The corresponding PIN Register bit will always read as zero when this bit is
set. When an analog signal is applied to the ADC7..0 pin 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.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
ADTS2
0
0
0
0
1
1
1
1
ADHSM
ADC7D
R/W
R/W
7
0
7
0
ADC6D
ADTS1
ACME
R/W
R/W
6
0
6
0
0
0
1
1
0
0
1
1
ADC5D
R/W
5
0
R
5
–
0
ADC4D
ADTS0
R/W
4
0
R
4
–
0
0
1
0
1
0
1
0
1
.
ADC3D
R/W
3
0
R
3
–
0
Trigger Source
Free Running mode
Analog Comparator
External Interrupt Request 0
Timer/Counter0 Compare Match
Timer/Counter0 Overflow
Timer/Counter1 Compare Match B
Timer/Counter1 Overflow
Timer/Counter1 Capture Event
ADC2D
ADTS2
R/W
R/W
2
0
2
0
AT90CAN128
ADC1D
ADTS1
R/W
R/W
1
0
1
0
ADC0D
ADTS0
R/W
R/W
0
0
0
0
ADCSRB
DIDR0
281