ATMEGA32-16AI Atmel, ATMEGA32-16AI Datasheet - Page 218

• Manufacturer Part Number: ATMEGA32-16AI
• Description: IC AVR MCU 32K 16MHZ IND 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32-16AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Special FunctionIO
Register – SFIOR
2503Q–AVR–02/11
• Bit 7:5 – 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 trig-
ger 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 trigger event, even if the ADC Interrupt Flag is set
Table 86. ADC Auto Trigger Source Selections
• Bit 4 – Reserved Bit
This bit is reserved for future use in the ATmega32. For ensuring compability with future devices,
this bit must be written zero when SFIOR is written.
Bit
Read/Write
Initial Value
ADTS2
0
0
0
0
1
1
1
1
ADTS2
R/W
7
0
ADTS1
0
0
1
1
0
0
1
1
ADTS1
R/W
6
0
ADTS0
ADTS0
R/W
5
0
0
1
0
1
0
1
0
1
R
4
–
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
ACME
R/W
3
0
PUD
R/W
2
0
PSR2
R/W
1
0
ATmega32(L)
PSR10
R/W
0
0
SFIOR
.
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