ATTINY26L8SU SL383 Atmel, ATTINY26L8SU SL383 Datasheet - Page 40

• Manufacturer Part Number: ATTINY26L8SU SL383
• Description: MCU 8-Bit ATtiny AVR RISC 2KB Flash 3.3V/5V 20-Pin SOIC T/R
• Manufacturer: Atmel

Standby Mode
Table 19. Active Clock Domains and Wake-up Sources in the different Sleep Modes.
Notes:
40
Sleep Mode
Idle
ADC Noise
Reduction
Power-down
Standby
1. Only recommended with external crystal or resonator selected as clock source.
2. Only level interrupt INT0.
(1)
ATtiny26(L)
clk
CPU
Active Clock domains
clk
FLASH
clk
X
Note that if a level triggered external interrupt or pin change interrupt is used from
Power-down mode, the changed level must be held for some time to wake up the MCU.
This makes the MCU less sensitive to noise.
If the wake-up condition disappears before the MCU wakes up and starts to execute,
e.g., a low level on INT0 is not held long enough, the interrupt causing the wake-up will
not be executed.
When the SM1..0 bits are “11” and an External Crystal/Resonator clock option is
selected, the SLEEP instruction forces the MCU into the Standby mode. This mode is
identical to Power-down with the exception that the Oscillator is kept running. From
Standby mode, the device wakes up in only six clock cycles.
IO
clk
X
X
ADC
Source Enabled
Oscillators
Main Clock
X
X
X
INT0, and Pin
Change
X
X
X
X
(2)
(2)
(2)
USI Start
Condition
X
X
X
X
Wake-up Sources
EEPROM
Ready
X
X
ADC
X
X
1477J–AVR–06/07
Other I/O
X