參數(shù)資料
型號： MC68HC705E6
廠商： 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述： HCMOS Microcontroller Unit
中文描述： HCMOS微控制器
文件頁數(shù)： 115/140頁
文件大?。?/td> 788K
代理商： MC68HC705E6
Electrical Specifications
A/D converter electrical characteristics
MC68HC05E6 — Rev. 1.0
Electrical Specifications
For More Information On This Product,
Go to: www.freescale.com
11-elec
Table 26 A/D converter electrical characteristics for 3.3V operation
(V
DD
= 3.3 Vdc
±
10%, V
SS
= 0 Vdc, T
A
= T
L
to T
H
)
Characteristic
Parameter
Min
Max
Unit
Resolution
Number of bits resolved by A/D converter
8
—
Bits
Non-linearity
Maximum deviation from best straight line through
the A/D transfer characteristics
(V
RH
= V
DD
and V
RL
= 0V)
Uncertainty due to converter resolution
—
±
0.5
LSB
Quantization error
—
±
0.5
LSB
Absolute accuracy
Difference between the actual input voltage and the
full-scale equivalent of the binary output code for all
errors
—
±
1.5
LSB
Conversion range
Analog input voltage range
V
RL
V
RL
V
RH
V
V
RH
Maximum analog reference voltage
V
DD
+ 0.1
V
Conversion time
Total time to perform a single analog to digital
conversion
Bus clock
Internal RC oscillator
—
—
32
32
t
CYC
μ
s
Monotonicity
Conversion result never decreases with an increase
in input voltage and has no missing codes
Guaranteed
Zero input reading
Conversion result when V
IN
= V
RL
Conversion result when V
IN
= V
RH
Analog input acquisition sample time
Bus clock
Internal RC oscillator
$00
—
Hex
Full scale reading
—
$FF
Hex
Sample acquisition
time
(1)
—
—
12
12
t
CYC
μ
s
Sample/hold
capacitance
Input leakage
(2)
Input capacitance during sample ADIN
—
12
pF
Input leakage on A/D pins ADIN and V
RH
—
1
μ
A
1. Source impedances greater than 10 k
will adversely affect internal RC charging time during input sampling.
2. The external system error caused by input leakage current is approximately equal to the product of R
SOURCE
and input
current. Input current to A/D channel will be dependent on external source impedance (see
Figure 17
).
F
Freescale Semiconductor, Inc.
n
.
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