參數(shù)資料
型號: XC161CJ
廠商: INFINEON TECHNOLOGIES AG
英文描述: 16-Bit Single-Chip Microcontroller
中文描述: 16位單片機
文件頁數(shù): 61/79頁
文件大?。?/td> 2440K
代理商: XC161CJ
XC161
Derivatives
Electrical Parameters
Data Sheet
57
V2.2, 2003-06
Figure 13
Equivalent Circuitry for Analog Inputs
1)
TUE is tested at
V
AREF
=
V
DDP
+ 0.1 V,
V
AGND
= 0 V. It is guaranteed by design for all other voltages within
the defined voltage range.
If the analog reference supply voltage drops below 4.5 V (i.e.
V
AREF
4.0 V) or exceeds the power supply
voltage by up to 0.2 V (i.e.
V
AREF
=
V
DDP
+ 0.2 V) the maximum TUE is increased to
±
3 LSB. This range is not
100% tested.
The specified TUE is guaranteed only, if the absolute sum of input overload currents on Port 5 pins (see
I
OV
specification) does not exceed 10 mA, and if
V
AREF
and
V
AGND
remain stable during the respective period of
time. During the reset calibration sequence the maximum TUE may be
±
4 LSB.
2)
V
AIN
may exceed
V
AGND
or
V
AREF
up to the absolute maximum ratings. However, the conversion result in
these cases will be X000
H
or X3FF
H
, respectively.
3)
The limit values for
f
BC
must not be exceeded when selecting the peripheral frequency and the ADCTC setting.
4)
This parameter includes the sample time
t
S
, the time for determining the digital result and the time to load the
result register with the conversion result (
t
SYS
= 1 /
f
SYS
).
Values for the basic clock
t
BC
depend on programming and can be taken from
Table 14
.
When the post-calibration is switched off, the conversion time is reduced by 12 x
t
BC
5)
The actual duration of the reset calibration depends on the noise on the reference signal. Conversions
executed during the reset calibration increase the calibration time. The TUE for those conversions may be
increased.
6)
Not 100% tested, guaranteed by design and characterization.
The given parameter values cover the complete operating range. Under relaxed operating conditions
(temperature, supply voltage) reduced values can be used for calculations. At room temperature and nominal
supply voltage the following typical values can be used:
C
AINTtyp
= 12 pF,
C
AINStyp
= 7 pF,
R
AINtyp
= 1.5 k
,
C
AREFTtyp
= 15 pF,
C
AREFStyp
= 13 pF,
R
AREFtyp
= 0.7 k
.
mcs04879_p.vsd
R
Source
=
V
AIN
C
Ext
R
AIN, On
C
AINT
-
C
AINS
C
AINS
A/D Converter
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