ATJTAGICE2 - JMS2206 Atmel, ATJTAGICE2 - JMS2206 Datasheet - Page 2

• Manufacturer Part Number: ATJTAGICE2 - JMS2206
• Description: TEST BOARD KIT, COMBO
• Manufacturer: Atmel

Specifications of ATJTAGICE2 - JMS2206

• Svhc: No SVHC (15-Dec-2010)
• Development Tool Type: Development Kit
• Kit Features: Supports Debugging With AVR Traditional JTAG Interface And With DebugWIRE Interface
• Mcu Supported Families: AVR Microcontroller
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Core Sub-architecture: AVR UC3
• Kit Contents: Board
• Features: Integral 5-volt Linear Regulator, LED DC On Indicator
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Enabling debugWIRE interface with JTAGICE mkII
2
AVR JTAGICE mkII
The connection between the JTAGICE mkII probe and the 6-pin header on the target is
described in Table 1.
Table 1. Connections required for ISP and debugWIRE
Once the DWEN fuse is programmed by ISP, there is only need for the GND, VTref, and
RESET lines when using the debugWIRE interface, thus the JTAGICE mkII will set lines
TCK, TDO and TDI to high impedance. The user can choose whether to disconnect the
three unused lines.
Note:
Figure 2. Connecting JTAGICE mkII probe to 6-pin ISP header using the squid cable
Enabling the debugWIRE interface is either done via ISP or High-Voltage programming.
JTAGICE mkII supports DWEN handling via ISP only.
Connect the JTAGICE mkII to the target. When starting a debugWIRE debugging ses-
sion, the JTAGICE mkII assumes that debugWIRE is enabled. If debugWIRE is not
enabled (DWEN fuse disabled), a dialog window in AVR Studio will offer you to enable
the interface via JTAGICE mkII. Note that this requires all six pins connected as
described in Table 1. Once the DWEN fuse is programmed, only three pins are needed
for further debugging the microcontroller.
JTAGICE mkII probe
Pin 1 (TCK)
Pin 2 (GND)
Pin 3 (TDO)
Pin 4 (VTref)
Pin 6 (nSRST)
Pin 9 (TDI)
Some precautions regarding the RESET line should be taken to ensure proper communi-
cation via the debugWIRE interface. Pull-up resistors on the RESET line must not be
smaller than 10KΩ (the pull-up resistor is not required for debugWIRE functionality), and
there should be no capacitive load (besides the one created by the line itself). Other logic
connected to the RESET line should be removed during debugging.
ISP6PIN header
Pin 3 SCK
Pin 6 GND
Pin 1 MISO
Pin 2 V
Pin 5 RESET
Pin 4 MOSI
CC
ISP
x
x
x
x
x
x
debugWIRE
2562C–AVR–07/06
x
x
x