ATTINY20-SSU Atmel, ATTINY20-SSU Datasheet - Page 21
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ATTINY20-SSU
Manufacturer Part Number
ATTINY20-SSU
Description
MCU AVR 2KB FLASH 12MHZ 14SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY20-EK1.pdf
(224 pages)
Specifications of ATTINY20-SSU
Core Processor
AVR
Core Size
8-Bit
Speed
12MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
12
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Processor Series
ATtiny
Core
AVR
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
SPI, TWI
Maximum Clock Frequency
12 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATTINY20-SSU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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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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