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參數(shù)資料
| 型號(hào)： | MT80C31-20D |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, 20 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | 1 MM HEIGHT, QFP-44 |
| 文件頁(yè)數(shù)： | 188/287頁(yè) |
| 文件大?。?/td> | 12910K |
| 代理商： | MT80C31-20D |
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268
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
A debugger, like the Atmel AVR Studio, may however use one or more of these resources for its
internal purpose, leaving less flexibility to the end-user.
A list of the On-chip Debug specific JTAG instructions is given in ”O(jiān)n-chip Debug Specific JTAG
The JTAGEN Fuse must be programmed to enable the JTAG Test Access Port. In addition, the
OCDEN Fuse must be programmed and no Lock bits must be set for the On-chip debug system
to work. As a security feature, the On-chip debug system is disabled when either of the LB1 or
LB2 Lock bits are set. Otherwise, the On-chip debug system would have provided a back-door
into a secured device.
The AVR Studio enables the user to fully control execution of programs on an AVR device with
On-chip Debug capability, AVR In-Circuit Emulator, or the built-in AVR Instruction Set Simulator.
AVR Studio supports source level execution of Assembly programs assembled with Atmel Cor-
poration’s AVR Assembler and C programs compiled with third party vendors’ compilers.
AVR Studio runs under Microsoft
Windows 95/98/2000 and Microsoft Windows NT.
For a full description of the AVR Studio, please refer to the AVR Studio User Guide. Only high-
lights are presented in this document.
All necessary execution commands are available in AVR Studio, both on source level and on
disassembly level. The user can execute the program, single step through the code either by
tracing into or stepping over functions, step out of functions, place the cursor on a statement and
execute until the statement is reached, stop the execution, and reset the execution target. In
addition, the user can have an unlimited number of code Break Points (using the BREAK
instruction) and up to two data memory Break Points, alternatively combined as a mask (range)
Break Point.
24.7
On-chip Debug Specific JTAG Instructions
The On-chip debug support is considered being private JTAG instructions, and distributed within
Atmel
and to selected third party vendors only. Instruction opcodes are listed for reference.
24.7.1
PRIVATE0; 0x8
Private JTAG instruction for accessing On-chip debug system.
24.7.2
PRIVATE1; 0x9
Private JTAG instruction for accessing On-chip debug system.
24.7.3
PRIVATE2; 0xA
Private JTAG instruction for accessing On-chip debug system.
24.7.4
PRIVATE3; 0xB
Private JTAG instruction for accessing On-chip debug system.
24.8
Using the JTAG Programming Capabilities
Programming of AVR parts via JTAG is performed via the 4-pin JTAG port, TCK, TMS, TDI, and
TDO. These are the only pins that need to be controlled/observed to perform JTAG program-
ming (in addition to power pins). It is not required to apply 12V externally. The JTAGEN Fuse
must be programmed and the JTD bit in the MCUCR Register must be cleared to enable the
JTAG Test Access Port.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MD80C32E-16SC | 8-BIT, 16 MHz, MICROCONTROLLER, CDIP40 |
| MQ80C52TXXX-16SB | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQFP44 |
| MQ80C32-25/883R | 8-BIT, 25 MHz, MICROCONTROLLER, CQFP44 |
| MQ80C32-12SHXXX:D | 8-BIT, 12 MHz, MICROCONTROLLER, CQFP44 |
| MR83C154DXXX-16P883D | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQCC44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT80C31BH | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Intel 功能描述: |
| MT80C51BH | 制造商:ROCHESTER 制造商全稱:ROCHESTER 功能描述:CMOS SINGLE - CHIP 8-BIT MICROCOMPUTER 64K program Memory Space |
| MT80C51FB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MT80C51FB/B | 制造商:Intel 功能描述: |
| MT80GB | 制造商:Datak Corporation 功能描述: |
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