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参数资料
型号： MAC7121CPV50XX
厂商： FREESCALE SEMICONDUCTOR INC
元件分类： 微控制器/微处理器
英文描述： MICROCONTROLLER, PQFP112
封装： 20 X 20 MM, 1.40 MM HEIGHT, 0.65 MM PITCH, MS-026BFA, LQFP-112
文件页数： 17/56页
文件大小： 757K
代理商： MAC7121CPV50XX
MAC7100 Microcontroller Family Hardware Specifications, Rev. 1.2
Preliminary
Electrical Characteristics
Freescale Semiconductor
24
3.10 Analog-to-Digital Converter
Table 26 and Table 27 show conditions under which the ATD operates. The following constraints exist to
obtain full-scale, full range results: VSSA ≤ VRL ≤ VIN ≤ VRH ≤ VDDA. This constraint exists because the
sample buffer amplifier cannot drive beyond the ATD power supply levels. If the input level goes outside of
this range it will effectively be clipped.
Table 26. ATD Operating Characteristics in 5.0 V Range
Conditions shown in Table 7 unless otherwise noted
Num C
Rating
Symbol
Min
Typ
Max
Unit
N1
D Reference Potential
Low
High
VRL
VRH
VSSA
VDDA ÷ 2
—
VDDA ÷ 2
VDDA
V
N2
C Differential Reference Voltage 1
NOTES:
1. Full accuracy is not guaranteed when differential voltage is less than 4.50 V
VRH – VRL
4.50
5.00
5.50
V
N3
D ATD Clock Frequency
fATDCLK
0.5
—
2.0
MHz
N4
D ATD 10-bit Conversion PeriodfATDCLK Cycles
2
@ 2.0MHz fATDCLK
2. Minimum time assumes a sample period of 2 ATD clocks; maximum time assumes a sample period of 16 ATD clocks.
NCONV10
TCONV10
14
7
—
28
14
Cycles
μs
N5
D ATD 8-bit Conversion PeriodfATDCLK Cycles
2
@ 2.0MHz fATDCLK
NCONV8
TCONV8
12
6
—
26
13
Cycles
μs
N6
D Stop Recovery Time (VDDA = 5.0 V)
TREC
——
20
μs
N7
P Reference Supply current 1 ATD module on
IREF
—
0.200
0.255
mA
N8
P Reference Supply current 2 ATD modules on
IREF
—
0.400
0.510
mA
Table 27. ATD Operating Characteristics in 3.3 V Range
Conditions shown in Table 7, with VDDX = 3.3 V –5/+10% and a temperature maximum of +140°C unless otherwise
noted.
Num C
Rating
Symbol
Min
Typ
Max
Unit
P1
D Reference Potential
Low
High
VRL
VRH
VSSA
VDDA ÷ 2
—
VDDA ÷ 2
VDDA
V
P2
C Differential Reference Voltage 1
NOTES:
1. Full accuracy is not guaranteed when differential voltage is less than 3.15 V
VRH – VRL
3.15
3.3
3.6
V
P3
D ATD Clock Frequency
fATDCLK
0.5
—
2.0
MHz
P4
D ATD 10-bit Conversion PeriodfATDCLK Cycles
2
@ 2.0MHz fATDCLK
2. Minimum time assumes a sample period of 2 ATD clocks; maximum time assumes a sample period of 16 ATD clocks.
NCONV10
TCONV10
14
7
—
28
14
Cycles
μs
P5
D ATD 8-bit Conversion PeriodfATDCLK Cycles
2
@ 2.0MHz fATDCLK
NCONV8
TCONV8
12
6
—
26
13
Cycles
μs
P6
D Stop Recovery Time (VDDA = 3.3 V)
TREC
——
20
μs
P7
P Reference Supply current 1 ATD module on
IREF
—
0.130
0.170
mA
P8
P Reference Supply current 2 ATD modules on
IREF
—
0.260
0.340
mA
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:MAC7131
products
in
208
MAPBGA
packages
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