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| 型號： | 68HC908GR |
| 廠商： | Motorola, Inc. |
| 英文描述： | Microcontrollers |
| 中文描述： | 微控制器 |
| 文件頁數(shù)： | 6/16頁 |
| 文件大?。?/td> | 604K |
| 代理商： | 68HC908GR |
HC908LJ12AD/D
6
Addendum to MC68HC908LJ12 Technical Data
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
Figure 1. Typical Internal Oscillator Frequency
ADC Electrical
Characteristics
20
2
3
4
5
6
70
60
50
40
30
Supply Voltage, V
DD
(V)
I
I
–40
°
C
+25
°
C
+85
°
C
0
10
Table 6. ADC Electrical Characteristics (2.4 to 3.3V)
Characteristic
Supply voltage
Input range
Resolution
Symbol
V
DDA
V
ADIN
B
AD
Min
2.4
0
10
Max
3.3
V
DDA
10
Unit
V
V
bits
Notes
V
ADIN
≤
V
DDA
1,024 counts
Includes quantization.
±
1 ADC count =
±
0.5 LSB
t
ADIC
= 1/f
ADIC
Absolute accuracy
A
AD
See
Figure 2
and
Figure 3
.
ADC internal clock
Conversion range
ADC voltage
reference high
ADC voltage
reference low
f
ADIC
R
AD
32 k
V
REFL
2 M
V
REFH
Hz
V
V
REFH
—
V
DDA
+ 0.1
V
V
REFL
V
SSA
– 0.1
—
V
V
SSA
is tied to V
SS
internally.
Conversion time
t
ADC
16
17
t
ADIC
cycles
t
ADIC
cycles
Sample time
t
ADS
5
—
Monotonically
Zero input reading
Full-scale reading
Input capacitance
Input impedance
V
REFH
/V
REFL
M
AD
Z
ADI
F
ADI
C
ADI
R
ADI
I
VREF
Guaranteed
000
3FC
—
20M
—
001
3FF
20
—
1.6
HEX
HEX
pF
mA
V
ADIN
= V
REFL
V
ADIN
= V
REFH
Not tested.
Measured at 5V
Not tested.
F
Freescale Semiconductor, Inc.
n
.
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