ATXMEGA384C3_14 Datasheet, PDF (74/125 Pages) ATMEL Corporation – 8/16-bit Atmel XMEGA C3 Microcontroller

35.8 Bandgap and Internal 1.0V Reference Characteristics
Table 35-13. Bandgap and Internal 1.0V Reference Characteristics
Symbol Parameter
Startup time
Bandgap voltage
Condition
As reference for ADC
As input voltage to ADC and AC
INT1V Internal 1.00V reference
T= 85°C, after calibration
Variation over voltage and temperature Calibrated at T= 85°C
Min.
Typ.
Max.
1 Clk_PER + 2.5µs
1.5
1.1
0.99
1
1.01
2
Units
µs
V
%
35.9 Brownout Detection Characteristics
.
Table
35-14.
Brownout
Detection
Characteristics⁽¹⁾
Symbol Parameter
Condition
V_BOT
BOD level 0 falling V_CC
BOD level 1 falling V_CC
BOD level 2 falling V_CC
BOD level 3 falling V_CC
BOD level 4 falling V_CC
BOD level 5 falling V_CC
BOD level 6 falling V_CC
BOD level 7 falling V_CC
t_BOD
Detection time
Continuous mode
Sampled mode
V_HYST Hysteresis
Note:
1. BOD is calibrated at 85°C within BOD level 0 values, and BOD level 0 is the default level.
35.10 External Reset Characteristics
Table 35-15. External Reset Characteristics
Symbol
t_EXT
Parameter
Minimum reset pulse width
V_RST Reset threshold voltage
R_RST Reset pin pull-up resistor
Condition
V_CC = 2.7 - 3.6V
V_CC = 1.6 - 2.7V
Min.
1.60
Typ.
1.62
1.8
2.0
2.2
2.4
2.6
2.8
3.0
0.4
1000
1.0
Max.
1.72
Units
V
µs
%
Min.
1000
Typ.
90
0.45*V_CC
0.45*V_CC
25
Max.
Units
ns
V
k
XMEGA C3 [DATASHEET]
74
Atmel-8361F-AVR-ATxmega384C3-Datasheet–11/2014