AT89C51SND1C-ROTIL ATMEL Corporation, AT89C51SND1C-ROTIL Datasheet - Page 27

• Manufacturer Part Number: AT89C51SND1C-ROTIL
• Description: Single-Chip Microcontroller with MP3 Decoder and Man-Machine Interface
• Manufacturer: ATMEL Corporation

A-to-D Converter
Table 35. A-to-D Converter DC Characteristics V
Oscillator and Crystal
Schematic
Parameters
4106F–8051–10/02
Symbol
A
AV
R
AI
AV
AI
V
C
REF
DD
PD
REF
IA
DD
IN
Parameter
Analog Supply Voltage
Analog Operating Supply Current
Analog Standby Current
Analog Input Voltage
Reference Voltage
A
A
AREF Input Resistance
Analog Input capacitance
REFN
REFP
Figure 12. Crystal Connection
Note:
Table 36. Oscillator and Crystal Characteristics V
Symbol
C
C
RS
CS
DL
C
F
X1
X2
L
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.
Drive Level
Crystal Series Resistance
Parameter
Internal Capacitance (X1 - VSS)
Internal Capacitance (X2 - VSS)
Equivalent Load Capacitance (X1 - X2)
Crystal Frequency
Crystal Shunt Capacitance
DD
= 2.7 to 3.3V , T
Min
AV
AV
2.7
2.4
10
SS
SS
V
SS
Typ
A
= -40° to +85°C
C1
C2
A
A
Max
600
V
V
3.3
30
10
2
Q
DD
DD
DD
X1
X2
= 2.7 to 3.3V , T
Units
Min
µA
µA
kΩ
pF
V
V
V
V
AT8xC51SND1C
Test Conditions
A
AIN1:0 = 0 to A
A
ADEN = 0 or PD = 1
T
T
A
A
V
V
Typ
10
10
= 25°C
= 25°C
DD
DD
5
= 3.3V
= 3.3V
A
= -40° to +85°C
Max
V
50
20
40
6
DD
Unit
MHz
µW
pF
pF
pF
pF
Ω
27