ATTINY12-8SC Atmel, ATTINY12-8SC Datasheet - Page 26

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

Specifications of ATTINY12-8SC

• 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: 0°C ~ 70°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: ATTINY128SC

Power-on Reset for the
ATtiny12
26
ATtiny11/12
A Power-on Reset (POR) pulse is generated by an on-chip detection circuit. The detec-
tion level is nominally 1.4V. The POR is activated whenever V
level. The POR circuit can be used to trigger the start-up reset, as well as detect a fail-
ure in supply voltage.
The Power-on Reset (POR) circuit ensures that the device is reset from power-on.
Reaching the Power-on Reset threshold voltage invokes a delay counter, which deter-
mines the delay for which the device is kept in Reset after V
of the delay counter can be defined by the user through the CKSEL fuses. The different
selections for the delay period are presented in Table 10. The Reset signal is activated
again, without any delay, when the V
If the built-in start-up delay is sufficient, RESET can be connected to V
an external pull-up resistor. See Figure 17. By holding the RESET pin low for a period
after V
ure 18 for a timing example on this.
Figure 17. MCU Start-up, RESET Tied to V
Figure 18. MCU Start-up, RESET Extended Externally
INTERNAL
TIME-OUT
INTERNAL
TIME-OUT
RESET
RESET
RESET
RESET
V
V
CC
CC
CC
has been applied, the Power-on Reset period can be extended. Refer to Fig-
V
V
V
POT
RST
POT
t
TOUT
CC
decreases below detection level.
V
RST
CC
.
t
TOUT
CC
CC
rise. The time-out period
is below the detection
CC
directly or via
1006F–AVR–06/07