ATXMEGA256A3B_09 ATMEL [ATMEL Corporation], ATXMEGA256A3B_09 Datasheet - Page 50
ATXMEGA256A3B_09
Manufacturer Part Number
ATXMEGA256A3B_09
Description
8/16-bit XMEGA A3B Microcontroller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATXMEGA256A3B_09.pdf
(102 pages)
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29. Program and Debug Interfaces
29.1
29.2
29.3
29.4
8116F–AVR–09/09
Features
Overview
JTAG interface
PDI - Program and Debug Interface
•
•
•
•
•
The programming and debug facilities are accessed through the JTAG and PDI physical inter-
faces. The PDI physical 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 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.
The PDI is an Atmel proprietary protocol for communication between the microcontroller and
Atmel’s development tools.
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
XMEGA A3B
50
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