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ATmega16A Datasheet(PDF) 281 Page - ATMEL Corporation

Part # ATmega16A
Description  8-bit Microcontroller with 16K Bytes In-System Programmable Flash
PDF  352 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega16A Datasheet(HTML) 281 Page - ATMEL Corporation

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281
8154B–AVR–07/09
ATmega16A
The OPCODE for each instruction is shown behind the instruction name in hex format. The text
describes which Data Register is selected as path between TDI and TDO for each instruction.
The Run-Test/Idle state of the TAP controller is used to generate internal clocks. It can also be
used as an idle state between JTAG sequences. The state machine sequence for changing the
instruction word is shown in Figure 26-9.
Figure 26-9. State Machine Sequence for Changing the Instruction Word
Test-Logic-Reset
Run-Test/Idle
Shift-DR
Exit1-DR
Pause-DR
Exit2-DR
Update-DR
Select-IR Scan
Capture-IR
Shift-IR
Exit1-IR
Pause-IR
Exit2-IR
Update-IR
Select-DR Scan
Capture-DR
0
1
0
11
1
00
00
11
1
0
1
1
0
1
0
0
1
0
1
1
0
1
0
0
0
0
1
1



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