ATAVRDISPLAYX Atmel, ATAVRDISPLAYX Datasheet - Page 107

• Manufacturer Part Number: ATAVRDISPLAYX
• Description: KIT EVAL XMEGA DISPLAY
• Manufacturer: Atmel

Specifications of ATAVRDISPLAYX

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Silicon Manufacturer: Atmel
• Silicon Family Name: ATxmega
• Kit Contents: Board
• Features: Temperature Sensor, Mono Speaker Via Audio Amplifier
• Svhc: No SVHC (15-Dec-2010)
• Core Architecture: AVR
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.4.3
9.4.4
8077H–AVR–12/09
External reset
Watchdog reset
The BODACT fuse determines the BOD setting for active mode and idle mode, while the
BODPD fuse determines the brown-out detection setting for all sleep modes except idle mode.
Table 9-3.
The External reset circuit is connected to the external RESET pin. The external reset will trigger
when the RESET pin is driven below the RESET pin threshold voltage, V
minimum pulse period t
includes an internal pull-up resistor.
Figure 9-5.
For characterization data on V
sheet.
The Watchdog Timer (WDT) is a system function for monitoring correct program operation. If the
WDT is not reset from the software within a programmable timout period, a Watchdog reset will
be given. The Watchdog reset is active for 1-2 clock cycles on the 2 MHz internal RC oscillator.
• Sampled: In this mode the BOD circuit will sample the VCC level with a period identical to
the 1 kHz output from the Ultra Low Power (ULP) oscillator. Between each sample the BOD is
turned off. This mode will reduce the power consumption compared to the enabled mode, but
a fall in the V
If a brown-out is detected in this mode, the BOD circuit is set in enabled mode to ensure that
the device is kept in reset until V
CC
BOD setting Fuse Decoding
External reset characteristics.
CC
level between 2 positive edges of the 1 kHz ULP output will not be detected.
BODACT[1:0]/ BODPD[1:0]
EXT
. The reset will be held as long as the pin is kept low. The reset pin
RST
00
01
10
11
and t
CC
is above V
EXT
and pull-up resistor values consult the device data
BOT
again.
RST
, for longer than the
XMEGA A
Reserved
Sampled
Disabled
Enabled
Mode
107