ATTINY28V-1AC Atmel, ATTINY28V-1AC Datasheet - Page 56

• Manufacturer Part Number: ATTINY28V-1AC
• Description: IC AVR MCU 2K 1.2MHZ 1.8V 32TQFP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY28V-1AC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 1.2MHz
• Peripherals: POR, WDT
• Number Of I /o: 11
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Ram Size: -
• Data Converters: -
• Connectivity: -

External Clock Drive Waveforms
Figure 41. External Clock
External Clock Drive
Table 25. External RC Oscillator, Typical Frequencies
56
Symbol
1/t
t
t
t
t
t
CHCX
CLCH
CHCL
CLCL
CLCX
CLCL
ATtiny28L/V
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
R [kΩ]
100.0
VIL1
31.5
6.5
VIH1
:
Note:
V
833.0
333.0
333.0
R should be in the range 3 - 100 kΩ, and C should be at least 20 pF.
Min
CC
0.0
= 1.8V to 2.7V
C [pF]
70.0
20.0
20.0
Max
1.2
1.6
1.6
V
250.0
100.0
100.0
CC
Min
0.0
= 2.7V to 4.0V
Max
4.0
1.6
1.6
V
250.0
100.0
100.0
100.0 kHz
Min
CC
0.0
1.0 MHz
4.0 MHz
= 4.0V to 5.5V
f
Max
4.0
0.5
0.5
1062F–AVR–07/06
Units
MHz
ns
ns
ns
µs
µs