Atmel At91Sam7 Microcontroller - Jtag Connections - Equinox Systems ISPnano I Series User Manual

Programmer
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1.5 Atmel AT91SAM7 microcontroller - JTAG connections

The schematic below shows the connections required to In-System Program (ISP) an Atmel
AT91SAM7 ARM7 microcontroller via the JTAG Interface.
The table below details the connections for programming Atmel AVR microcontrollers via the JTAG
Interface.
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 AN122 for detailed instructions of how to program an Atmel
AT91SAM7 microcontroller.
Programmer
Connect to
Input /
pin on
Output
Target System
P
TARGET_VCC
See notes.
P
Signal GROUND
(0V)
I/O
Spare I/O
I/O
JTAG – TMS
I/O
JTAG - TCK
I/O
JTAG - TDO
I/O
JTAG - TDI
O
RESET
Notes
Target VCC
Target External VCC
Signal Ground Connection
Target RESET control pin

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