ATtiny48 datasheet(205/266 Pages) ATMEL

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205

8008C–AVR–03/09

ATtiny48/88

Note:

1. VBOT may be below nominal minimum operating voltage for some devices. For devices where

this is the case, the device is tested down to VCC = VBOT 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.

21.6

Analog Comparator Characteristics

Note:

All parameters are based on simulation results and are not tested in production

Table 21-4.

BOT vs. BODLEVEL Fuse Coding

(1)

BODLEVEL [2..0] Fuses

Min

Typ

Max

Units

111

BOD Disabled

110

1.7

1.8

2.0

101

2.5

2.7

2.9

100

4.1

4.3

4.5

0XX

Reserved

Table 21-5.

Analog Comparator Characteristics, T

A = -40°C - 85°C

Symbol

Parameter

Condition

Min

Typ

Max

Units

VAIO

Input Offset Voltage

VCC = 5V, VIN = VCC / 2

< 10

ILAC

Input Leakage Current

VCC = 5V, VIN = VCC / 2

-50

tAPD

Analog Propagation Delay

(from saturation to slight overdrive)

VCC = 2.7V

750

VCC = 4.0V

500

Analog Propagation Delay

(large step change)

VCC = 2.7V

100

VCC = 4.0V

tDPD

Digital Propagation Delay

VCC = 1.8V - 5.5

CLK

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