Datasheet

143
XMEGA A3U [DATASHEET]
Atmel-8386D-AVR-ATxmega64A3U-128A3U-192A3U-256A3U–03/2014
36.4.9 Bandgap and Internal 1.0V Reference Characteristics
Table 36-112. Bandgap and Internal 1.0V reference characteristics.
36.4.10 Brownout Detection Characteristics
Table 36-113. Brownout detection characteristics.
t
delay
Propagation delay
V
CC
= 3.0V, T= 85°C mode = HS 30 90
ns
mode = HS 30
V
CC
= 3.0V, T= 85°C mode = LP 130 500
mode = LP 130
64-Level Voltage Scaler Integral non-linearity (INL) 0.3 0.5 lsb
Symbol Parameter Condition Min. Typ. Max. Units
Symbol Parameter Condition Min. Typ. Max. Units
Startup time
As reference for ADC or DAC 1 Clk
PER
+ 2.5µs
µs
As input voltage to ADC and AC 1.5
Bandgap voltage 1.1 V
INT1V Internal 1.00V reference T= 85°C, after calibration 0.99 1 1.01 V
Variation over voltage and temperature Relative to T= 85°C, V
CC
= 3.0V ±1.0 %
Symbol Parameter Condition Min. Typ. Max. Units
V
BOT
BOD level 0 falling V
CC
1.60 1.62 1.72
V
BOD level 1 falling V
CC
1.8
BOD level 2 falling V
CC
2.0
BOD level 3 falling V
CC
2.2
BOD level 4 falling V
CC
2.4
BOD level 5 falling V
CC
2.6
BOD level 6 falling V
CC
2.8
BOD level 7 falling V
CC
3.0
t
BOD
Detection time
Continuous mode 0.4
µs
Sampled mode 1000
V
HYST
Hysteresis 1.6 %