ATTIny2313-16MI ATMEL Corporation, ATTIny2313-16MI Datasheet - Page 178

• Manufacturer Part Number: ATTIny2313-16MI
• Description: 8-bit AVR Microcontroller with 2K Bytes In-System Programmable Flash
• Manufacturer: ATMEL Corporation

External Clock Drive
Waveforms
External Clock Drive
178
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
ATtiny2313/V
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.
Figure 80. External Clock Drive Waveforms
Table 81. External Clock Drive (Estimated Values)
Symbol
1/t
t
t
t
t
t
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
V
Parameter
Oscillator
Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in
period from one
clock cycle to
the next
IL1
V
IH1
V
1000
Min.
400
400
CC
0
= 1.8 - 5.5V
Max.
2.0
2.0
1
2
CC
CC
V
Min.
125
= 5V, 5 mA at V
CC
50
50
= 5V, 5 mA at V
0
=2.7 - 5.5V
Max.
1.6
1.6
8
2
CC
CC
V
Min.
62.5
CC
= 3V) under steady state
25
25
= 3V) under steady state
0
= 4.5 - 5.5V
Max.
0.5
0.5
16
2543C–AVR–12/03
2
Units
MHz
ns
ns
ns
%
s
s