ATTINY25-20SUR Atmel, ATTINY25-20SUR Datasheet - Page 131

• Manufacturer Part Number: ATTINY25-20SUR
• Description: MCU AVR 2KB FLASH 20MHZ 8SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY25-20SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 6
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2586M–AVR–07/10
Figure 17-6. ADC Timing Diagram, Auto Triggered Conversion
In Free Running mode, a new conversion will be started immediately after the conversion com-
pletes, while ADSC remains high.
Figure 17-7. ADC Timing Diagram, Free Running Conversion
For a summary of conversion times, see
Table 17-1.
Cycle Number
ADC Clock
Trigger
Source
ADATE
ADIF
ADCH
ADCL
Condition
First conversion
Normal conversions
Auto Triggered conversions
Prescaler
Reset
ADC Conversion Time
Cycle Number
ADC Clock
ADSC
ADIF
ADCH
ADCL
MUX and REFS
Update
1
Conversion
2
Complete
One Conversion
3
(Cycles from Start of Conversion)
11
Sample &
Hold
4
12
5
Sample & Hold
Table
13
6
13.5
1.5
2
17-1.
7
One Conversion
Next Conversion
1
Sign and MSB of Result
LSB of Result
8
2
MUX and REFS
Update
9
10
Conversion
3
Complete
11
Sample & Hold
4
Total Conversion Time
12
13
(Cycles)
13.5
25
13
Sign and MSB of Result
LSB of Result
Next Conversion
1
Prescaler
Reset
2
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