Atmel Avr Microcontroller - Jtag Connections - Equinox Systems ISPnano I Series User Manual

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Datasheet of ISPNANO S3 KIT - ISP PORTABLE PROGRAMMER
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1.4 Atmel AVR microcontroller - JTAG connections

The table below details the connections for programming Atmel AVR microcontrollers via the JTAG
Interface.
PROG_VCC
Reset
PROG_RESET
Circuit
RESET
PROG_TCK
TCK
PROG_TDI
TDI
PROG_TDO
TDO
PROG_TMS
TMS
PROG_GND
Pin Programmer
No Pin name
1 + 2 TARGET_VCC
3 + 4 TARGET_EXT_VCC P
5 + 6 PROG_GND
10 Programmer I/O5
11 Programmer I/O4
12 Programmer I/O3
13 Programmer I/O2
14 Programmer I/O1
16 PROG_RESET
Please refer to Application Note AN105 for detailed instructions of how to program an Atmel AVR
microcontroller via the JTAG interface.
88
Vcc
J
T
Atmel
A
ATmega
G
Microcontroller
P
O
R
T
Vss
Programmer
Input /
Output
P
P
I/O
I/O
I/O
I/O
I/O
O
ISPnano Series Programmer - User Manual – V1.11 – 12
Connect to Notes
pin on
Target System
TARGET_VCC Target VCC
See notes. Target External VCC
Signal GROUND Signal Ground Connection
(0V)
Spare I/O
JTAG – TMS
JTAG - TCK
JTAG - TDO
JTAG - TDI
RESET Target RESET control pin
th
May 2011