ATTINY12-8SI Atmel, ATTINY12-8SI Datasheet - Page 21

• Manufacturer Part Number: ATTINY12-8SI
• Description: IC AVR MCU 1K 5V 8MHZ IND SO-8
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY12-8SI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: POR, WDT
• Number Of I /o: 6
• Program Memory Size: 1KB (512 x 16)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 1 x 8 bit
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Ram Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: No
• Other names: ATTINY128SI

ATtiny11/12
reset (if enabled), an external level interrupt (INT0), or a pin change interrupt can wake
up the MCU.
Note that if a level triggered or pin change interrupt is used for wake-up from Power-
down Mode, the changed level must be held for a time to wake up the MCU. This makes
the MCU less sensitive to noise. The wake-up period is equal to the clock-counting part
of the reset period (See Table 10). The MCU will wake up from the power-down if the
input has the required level for two watchdog oscillator cycles. If the wake-up period is
shorter than two watchdog oscillator cycles, the MCU will wake up if the input has the
required level for the duration of the wake-up period. If the wake-up condition disap-
pears before the wake-up period has expired, the MCU will wake up from power-down
without executing the corresponding interrupt. The period of the watchdog oscillator is
2.7 µs (nominal) at 3.0V and 25°C. The frequency of the watchdog oscillator is voltage
dependent as shown in the section “ATtiny11 Typical Characteristics” on page 62.
When waking up from Power-down Mode, there is a delay from the wake-up condition
occurs until the wake-up becomes effective. This allows the clock to restart and become
stable after having been stopped. The wake-up period is defined by the same CKSEL
fuses that define the reset time-out period.
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