ATXMEGA64A1 datasheet(48/99 Pages) ATMEL

tên linh kiện	ATXMEGA64A1

Giải thích chi tiết về linh kiện	8/16-bit XMEGA A1 Microcontroller

PDF	99 Pages

Scroll/Zoom	100%

nhà sản xuất	ATMEL [ATMEL Corporation]

Trang chủ	http://www.atmel.com

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48 / 99 page

8067I–AVR–04/09

XMEGA A1

28. PDI - Program and Debug Interface

28.1

Features

• PDI - Program and Debug Interface (Atmel proprietary 2-pin interface)

• JTAG Interface (IEEE std. 1149.1 compliant)

• Boundary-scan capabilities according to the IEEE Std. 1149.1 (JTAG)

• Access to the OCD system

• Programming of Flash, EEPROM, Fuses and Lock Bits

28.2

Overview

The programming and debug facilities are accessed through the JTAG and PDI physical inter-

faces. The PDI physical interface uses one dedicated pin together with the Reset pin, and no

general purpose pins are used. JTAG uses four general purpose pins on PORTB.

The PDI is an Atmel proprietary protocol for communication between the microcontroller and

Atmel’s or third party development tools.

28.3

JTAG interface

The JTAG physical layer handles the basic low-level serial communication over four I/O lines

named TMS, TCK, TDI, and TDO. It complies to the IEEE Std. 1149.1 for test access port and

boundary scan.

ATXMEGA64A1 bảng dữ liệu(PDF) 48 Page - ATMEL Corporation