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参数资料
| 型号： | R5F6461ELFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 48 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80 |
| 文件页数： | 48/72页 |
| 文件大小： | 839K |
| 代理商： | R5F6461ELFP |
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52
XMEGA A3U [DATASHEET]
Atmel-8386D-AVR-ATxmega64A3U-128A3U-192A3U-256A3U–03/2014
31.
Programming and Debugging
31.1
Features
Programming
External programming through PDI or JTAG interfaces
Minimal protocol overhead for fast operation
Built-in error detection and handling for reliable operation
Boot loader support for programming through any communication interface
Debugging
Nonintrusive, real-time, on-chip debug system
No software or hardware resources required from device except pin connection
Program flow control
Go, Stop, Reset, Step Into, Step Over, Step Out, Run-to-Cursor
Unlimited number of user program breakpoints
Unlimited number of user data breakpoints, break on:
Data location read, write, or both read and write
Data location content equal or not equal to a value
Data location content is greater or smaller than a value
Data location content is within or outside a range
No limitation on device clock frequency
Program and Debug Interface (PDI)
Two-pin interface for external programming and debugging
Uses the Reset pin and a dedicated pin
No I/O pins required during programming or debugging
JTAG interface
Four-pin, IEEE Std. 1149.1 compliant interface for programming and debugging
Boundary scan capabilities according to IEEE Std. 1149.1 (JTAG)
31.2
Overview
The Program and Debug Interface (PDI) is an Atmel proprietary interface for external programming and on-chip
debugging of a device.
The PDI supports fast programming of nonvolatile memory (NVM) spaces; flash, EEPOM, fuses, lock bits, and the user
signature row.
Debug is supported through an on-chip debug system that offers nonintrusive, real-time debug. It does not require any
software or hardware resources except for the device pin connection. Using the Atmel tool chain, it offers complete
program flow control and support for an unlimited number of program and complex data breakpoints. Application debug
can be done from a C or other high-level language source code level, as well as from an assembler and disassembler
level.
Programming and debugging can be done through two physical interfaces. The primary one is the PDI physical layer,
which is available on all devices. This is a two-pin interface that uses the Reset pin for the clock input (PDI_CLK) and one
other dedicated pin for data input and output (PDI_DATA). A JTAG interface is also available on most devices, and this
can be used for programming and debugging through the four-pin JTAG interface. The JTAG interface is IEEE Std.
1149.1 compliant, and supports boundary scan. Any external programmer or on-chip debugger/emulator can be directly
connected to either of these interfaces. Unless otherwise stated, all references to the PDI assume access through the
PDI physical layer.
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