ATxmega32D4 Atmel Corporation, ATxmega32D4 Datasheet - Page 84

• Manufacturer Part Number: ATxmega32D4
• Manufacturer: Atmel Corporation

Specifications of ATxmega32D4

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Speed: No
• Usb Interface: No
• Spi: 4
• Twi (i2c): 2
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 12
• Adc Speed (ksps): 200
• Analog Comparators: 2
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.6 to 3.6
• Operating Voltage (vcc): 1.6 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 14
• Input Capture Channels: 14
• Pwm Channels: 14
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8.4.2
8210B–AVR–04/10
Brown-Out Detection
The Brown-Out Detection (BOD) circuit monitors that the V
trigger level, V
low the trigger level for a minimum time, t
above the trigger level again.
Figure 8-4.
For characterization data on t
by a programmable BODLEVEL setting, see
Table 8-2.
Note:
The BOD circuit has 3 modes of operation:
• Disabled: In this mode there is no monitoring of the V
• Enabled: In this mode the V
recommended for applications where the power supply is stable.
for at least t
INTERNAL
TIME-OUT
1. The values here are nominal values only. For typical, maximum and minimum numbers consult
RESET
the device datasheet.
V
BOT
CC
Brown-out Detection reset.
Programmable BODLEVEL setting
BOD
. When the BOD is enabled, a BOD reset will be given if the V
will give a brown-out reset.
BODLEVEL[2:0]
111
110
101
100
011
010
001
000
BOD
CC
consult the device datasheet. The trigger level is determined
level is continuously monitored, and a drop in V
(1)
V
BOT-
BOD
Table
t
. The reset is kept active until the V
BOD
8-2.
CC
CC
level, and hence it is only
level is kept above a configurable
V
t
V
TOUT
BOT+
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
BOT
XMEGA D
CC
CC
level falls bel-
CC
below V
UNIT
level rises
V
BOT
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