at32uc3b0512-z2ues ATMEL Corporation, at32uc3b0512-z2ues Datasheet - Page 46

• Manufacturer Part Number: at32uc3b0512-z2ues
• Description: 32-bit Avr Microcontroller
• Manufacturer: ATMEL Corporation

32059J–12/2010
Figure 9-6.
In addition to the listed reset types, the JTAG can keep parts of the device statically reset
through the JTAG Reset Register. See JTAG documentation for details.
Table 9-3.
When a Reset occurs, some parts of the chip are not necessarily reset, depending on the reset
source. Only the Power On Reset (POR) will force a reset of the whole chip.
Reset source
Power-on Reset
External Reset
Brownout Reset
CPU Error
Watchdog Timer
OCD
R E S E T _ N
P o w e r-O n
B ro w n o u t
D e te c to r
D e te c to r
W a tc h d o g R e s e t
Reset Controller block diagram
Reset description
J T A G
O C D
Description
Supply voltage below the power-on reset detector threshold
voltage
RESET_N pin asserted
Supply voltage below the brownout reset detector threshold
voltage
Caused by an illegal CPU access to external memory while
in Supervisor mode
See watchdog timer documentation.
See On-Chip Debug documentation
C o n tro lle r
R C _ R C A U S E
R e s e t
AT32UC3B
O C D , R T C /W D T
C lo c k G e n e ra to
C P U , H S B ,
P B A , P B B
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