ATTIny13-12PI ATMEL Corporation, ATTIny13-12PI Datasheet - Page 116

• Manufacturer Part Number: ATTIny13-12PI
• Description: 8-bit AVR Microcontroller with 1K Bytes In-System Programmable Flash
• Manufacturer: ATMEL Corporation

External Clock Drive Waveforms
Figure 60. External Clock Drive Waveforms
External Clock Drive
Table 57. External Clock Drive
Maximum Speed vs. V
116
Symbol
1/t
t
t
t
t
t
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
3. “Min” means the lowest value where the pin is guaranteed to be read as high.
4. Although each I/O port can sink more than the test conditions (10 mA at V
5. Although each I/O port can source more than the test conditions (10 mA at V
ATtiny13
conditions (non-transient), the following must be observed:
1] The sum of all IOL, for all ports, should not exceed 60 mA.
If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater
than the listed test condition.
conditions (non-transient), the following must be observed:
1] The sum of all IOH, for all ports, should not exceed 60 mA.
If IOH exceeds the test condition, VOH may exceed the related specification. Pins are not guaranteed to source current
greater than the listed test condition.
Parameter
Clock Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period from one clock cycle to the next
CC
V
IL1
V
Maximum frequency is depending on V
Maximum Frequency vs. V
the maximum frequency at a given voltage in this interval, use this equation:
At 3 Volt, this gives:
Thus, when V
IH1
CC
= 3V, maximum frequency will be 14 MHz.
V
1000
Min.
CC
400
400
CC
0
Frequency
curve is linear between 1.8V < V
= 1.8 - 5.5V
Frequency
Max.
2.0
2.0
1
2
CC.
=
As shown in Figure 61 and Figure 62, the
--------------------- -
V
=
CC
3 0.9
Min.
104
CC
CC
50
50
0.15
0
–
----------------------
= 5V, 5 mA at V
V 0.9
= 5V, 5 mA at V
= 2.7 - 5.5V
0.15
–
=
Max.
9.6
1.6
1.6
2
14
CC
CC
V
Min.
62.5
CC
CC
25
25
= 3V) under steady state
0
= 3V) under steady state
< 4.5V. To calculate
= 4.5 - 5.5V
Max.
0.5
0.5
16
2535B–AVR–01/04
2
Units
MHz
ns
ns
ns
µs
µs
%