Datasheet

179
8006H–AVR–10/09
ATtiny24/44/84
20.5.3 Brown-Out Detection
Note: 1. V
BOT
may be below nominal minimum operating voltage for some devices. For devices where
this is the case, the device is tested down to V
CC
= V
BOT
during the production test. This guar-
antees that a Brown-out Reset will occur before V
CC
drops to a voltage where correct
operation of the microcontroller is no longer guaranteed.
20.6 Analog Comparator Characteristics
Note: All parameters are based on simulation results and they are not tested in production
Table 20-7. V
BOT
vs. BODLEVEL Fuse Coding
BODLEVEL [2..0] Fuses Min
(1)
Typ
(1)
Max
(1)
Units
111 BOD Disabled
110 1.7 1.8 2.0
V101 2.5 2.7 2.9
100 4.1 4.3 4.5
0XX Reserved
Table 20-8. Analog Comparator Characteristics, T
A
= -40°C - 85°C
Symbol Parameter Condition Min Typ Max Units
V
AIO
Input Offset Voltage V
CC
= 5V, V
IN
= V
CC
/ 2 < 10 40 mV
I
LAC
Input Leakage Current V
CC
= 5V, V
IN
= V
CC
/ 2 -50 50 nA
t
APD
Analog Propagation Delay
(from saturation to slight overdrive)
V
CC
= 2.7V 750
ns
V
CC
= 4.0V 500
Analog Propagation Delay
(large step change)
V
CC
= 2.7V 100
V
CC
= 4.0V 75
t
DPD
Digital Propagation Delay V
CC
= 1.8V - 5.5 1 2 CLK