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ATMEGA16 Datasheet(PDF) 235 Page - ATMEL Corporation

Part # ATMEGA16
Description  8-bit AVR Microcontroller with 16K Bytes In-System Programmable Flash
PDF  315 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATMEGA16 Datasheet(HTML) 235 Page - ATMEL Corporation

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235
ATmega16(L)
2466E–AVR–10/02
Using this algorithm, the timing constraint on the HOLD signal constrains the TCK clock
frequency. As the algorithm keeps HOLD high for five steps, the TCK clock frequency
has to be at least five times the number of scan bits divided by the maximum hold time,
t
hold,max.
Table 92. Algorithm for Using the ADC
Step
Actions
ADCEN
DAC
MUXEN
HOLD
PRECH
PA3.
Data
PA3.
Control
PA3.
Pullup_
Enable
1
SAMPLE
_PRELO
AD
1
0x200
0x08
1
1
0
0
0
2
EXTEST
1
0x200
0x08
0
1
0
0
0
3
1
0x200
0x08
1
1
0
0
0
4
1
0x123
0x08
1
1
0
0
0
5
1
0x123
0x08
1
0
0
0
0
6Verify the
COMP bit
scanned
out to be
0
1
0x200
0x08
1
1
0
0
0
7
1
0x200
0x08
0
1
0
0
0
8
1
0x200
0x08
1
1
0
0
0
9
1
0x143
0x08
1
1
0
0
0
10
1
0x143
0x08
1
0
0
0
0
11
Verify the
COMP bit
scanned
out to be
1
1
0x200
0x08
1
1
0
0
0



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