Atmel Xplained Evaluation Kit ATMEGA1284P-XPLD ATMEGA1284P-XPLD Hoja De Datos

 

8377B-AVR-11/11 

The Atmel MEGA-1284P Xplained kit has five 10-pin, 100mil headers. Two headers 
have a fixed communication interface (J1 and J4). One header has analog 
functionality (J2), and the last header (J3) has general purpose digital I/O. 

The 90° angled header is the 

 JTAG programming and 

debugging header. 

For the location of the respective headers, refer to 

. 

The 

 can be programmed and debugged by connecting an external 

programming/debugging tool to the JTAG pin header. The pin header has a standard 
JTAG programmer pin-out (refer to online help in the 

), enabling 

tools like the 

 to be connected 

directly to the header. 

Table 4-1. MEGA-1284P Xplained programming and debugging interface – JTAG. 

1 TCK 

2 GND 

3 TDO 

4 VCC 

5 TMS 

6 nSRST 

7 - 

8 - 

9 TDI 

10 GND 

Note: 

1.  Standard pin-out for the 

 and other Atmel programming tools 

The 

 can be programmed through its boot loader. The boot 

loader is evoked by shorting the two holes marked BOOTLOADER BOARD 
CONTROLLER on the bottom side of the board before applying power to the board. 
The two holes have 100mil spacing, enabling the user to solder in a two-pin header 
and use a jumper to easily enter the boot loader. Programming is performed through 
the boot loader programmer target in the 

. 

 can also be programmed by connecting a 

programming tool, such as the 

, to the 10 holes marked JTAG 

BOARD CONTROLLER on the bottom side of the board. The holes have 100mil 
spacing, letting the user solder in a 10-pin header to program the board controller.