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ATmega16 датащи(PDF) 293 Page - ATMEL Corporation

номер детали ATmega16
подробное описание детали  8-bit Microcontroller with 16K Bytes In-Syustem Programmable Flash
PDF  357 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega16 датащи(HTML) 293 Page - ATMEL Corporation

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2466S–AVR–05/09
ATmega16(L)
5] The sum of all IOH, for ports D3 - D7, should not exceed 100 mA.
6] The sum of all IOH, for ports C0 - C7, should not exceed 100 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.
5. Minimum VCC for Power-down is 2.5V.
External Clock
Drive Waveforms
Figure 145. External Clock Drive Waveforms
External Clock
Drive
Note:
1. Refer to “External Clock” on page 31 for details.
Notes:
1. R should be in the range 3 k
Ω - 100 kΩ, and C should be at least 20 pF.
2. The frequency will vary with package type and board layout.
VIL1
VIH1
Table 118. External Clock Drive
(1)
Symbol
Parameter
VCC = 2.7V to 5.5VVCC = 4.5V to 5.5V
Units
Min
Max
Min
Max
1/tCLCL
Oscillator Frequency
0
8
0
16
MHz
tCLCL
Clock Period
125
62.5
ns
tCHCX
High Time
50
25
ns
tCLCX
Low Time
50
25
ns
tCLCH
Rise Time
1.6
0.5
μs
tCHCL
Fall Time
1.6
0.5
μs
Δt
CLCL
Change in period from
one clock cycle to the
next
22
%
Table 119. External RC Oscillator, Typical Frequencies (V
CC = 5)
R [k
Ω](1)
C [pF]
f(2)
33
22
650 kHz
10
22
2.0 MHz



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