ATTINY20-EK1 Atmel, ATTINY20-EK1 Datasheet - Page 21
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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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6.4.2
6.4.3
8235B–AVR–04/11
Starting from Power-Down Mode
Starting from Idle / ADC Noise Reduction / Standby Mode
Table 6-1.
Notes:
When waking up from Power-Down sleep mode, the supply voltage is assumed to be at a suffi-
cient level and only the oscillator start-up time is counted to ensure the stable operation of the
oscillator. The oscillator start-up time is counted on the selected main clock, and the start-up
time depends on the clock selected. See
Table 6-2.
Notes:
When waking up from Idle, ADC Noise Reduction or Standby Mode, the oscillator is already run-
ning and no oscillator start-up time is introduced.
2. The second step is to count the oscillator start-up time, which ensures that the cali-
3. The last step before releasing the internal reset is to load the calibration and the config-
Reset
64 ms
voltage has reached sufficient levels. The reset start-up time is counted using the inter-
nal 128 kHz oscillator. See
Note that the actual supply voltage is not monitored by the start-up logic. The device
will count until the reset start-up time has elapsed even if the device has reached suffi-
cient supply voltage levels earlier.
brated internal oscillator has reached a stable state before it is used by the other parts
of the system. The calibrated internal oscillator needs to oscillate for a minimum num-
ber of cycles before it can be considered stable. See
oscillator start-up time.
uration values from the Non-Volatile Memory to configure the device properly. The
configuration time is listed in
1. After powering up the device or after a reset the system clock is automatically set to calibrated
2. When the Brown-out Detection is enabled, the reset start-up time is 128 ms after powering up
1. The start-up time is measured in main clock oscillator cycles.
2. When using software BOD disable, the wake-up time from sleep mode will be approximately
Oscillator start-up time
internal 8 MHz oscillator, divided by 8
the device.
60 µs.
Oscillator
6 cycles
Start-up Times when Using the Internal Calibrated Oscillator
Start-up Time from Power-Down Sleep Mode.
6 cycles
Configuration
21 cycles
Table 6-1
Table
6-1.
Table 6-2
Total start-up time
64 ms + 6 oscillator cycles + 21 system clock cycles
for details of reset start-up time.
for details.
Table 6-1
6 oscillator cycles
Total start-up time
for details of the
(1)(2)
ATtiny20
(1)(2)
21
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