Atmel Evaluation Board AT32UC3C-EK AT32UC3C-EK Data Sheet
Product codes
AT32UC3C-EK
22
AVR32919
32151A-AVR-09/10
4.5.2 UC3C-Specific Information
4.5.2.1 AT32UC3C0512C pinout for the JTAG Interface
Table 4-13. UC3C pinout for the JTAG interface
QFP144 pin
GPIO
GPIO alternate function
Feature
1 PA00
None
JTAG.TCK
2 PA01
None
JTAG.TDI
3 PA02
None
JTAG.TDO
4 PA03
None
JTAG.TMS
142 N.A.
N.A.
RESET_N pin. Used when
enabling/disabling the JTAG or the
aWire interface. Also, the aWire data
is multiplexed on this pin
enabling/disabling the JTAG or the
aWire interface. Also, the aWire data
is multiplexed on this pin
4.5.2.2 AT32UC3C0512 pinout for the NEXUS Interface
Table 4-14. UC3C pinout for the NEXUS interface
QFP144 pin
GPIO
GPIO alternate function
Feature
1 PA00
None
JTAG.TCK
2 PA01
None
JTAG.TDI
3 PA02
None
JTAG.TDO
4 PA03
None
JTAG.TMS
142 N.A.
N.A.
RESET_N pin. Used when
enabling/disabling the JTAG or the
aWire interface. Also, the aWire data
is multiplexed on this pin
enabling/disabling the JTAG or the
aWire interface. Also, the aWire data
is multiplexed on this pin
27 PA10
N.A.
EVTI_N
9 PB06
N.A.
MDO[5]
18 PB15
N.A.
MDO[4]
17 PB14
N.A.
MDO[3]
46 PA27
N.A.
MDO[2]
45 PA26
N.A.
MDO[1]
36 PA19
N.A.
MDO[0]
138 PD29
N.A.
EVTO_N
65 PB26
N.A.
MCKO
64 PB25
N.A.
MSEO[1]
57 PB18
N.A.
MSEO[0]
4.5.3 Configuration and Test Points
4.5.3.1 Special Considerations for the NEXUS pins
On the Atmel AVR UC3 C series, the NEXUS pins are multiplexed with I/O lines.
While using these multiplexed NEXUS lines all normal peripheral activity on these
lines is disabled. The user must make sure that no external peripheral is blocking the
NEXUS lines while debugging.
While using these multiplexed NEXUS lines all normal peripheral activity on these
lines is disabled. The user must make sure that no external peripheral is blocking the
NEXUS lines while debugging.