AT80SND1C-ROTIL datasheet(184/210 Pages) ATMEL

tên linh kiện	AT80SND1C-ROTIL

Giải thích chi tiết về linh kiện	Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface

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184 / 210 page

184

AT8xC51SND1C

4109E–8051–06/03

A to D Converter

Table 155. A to D Converter DC Characteristics

DD = 2.7 to 3.3 V, TA = -40 to +85°C

Oscillator & Crystal

Schematic

Figure 139. Crystal Connection

Note:

For operation with most standard crystals, no external components are needed on X1

and X2. It may be necessary to add external capacitors on X1 and X2 to ground in spe-

cial cases (max 10 pF). X1 and X2 may not be used to drive other circuits.

Parameters

Table 156. Oscillator & Crystal Characteristics

DD = 2.7 to 3.3 V, TA = -40 to +85°C

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

Analog Supply Voltage

2.7

3.3

Analog Operating Supply

Current

600

µA

DD= 3.3V

AIN1:0= 0 to AV

ADEN= 1

Analog Standby Current

µA

AVDD= 3.3V

ADEN= 0 or PD= 1

Analog Input Voltage

REF

Reference Voltage

REFN

AREFP

2.4

AVDD

RREF

AREF Input Resistance

Ω

TA= 25°C

CIA

Analog Input capacitance

TA= 25°C

VSS

Symbol

Parameter

Min

Typ

Max

Unit

Internal Capacitance (X1 - VSS)

Internal Capacitance (X2 - VSS)

Equivalent Load Capacitance (X1 - X2)

Drive Level

µW

Crystal Frequency

MHz

Crystal Series Resistance

Ω

Crystal Shunt Capacitance

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