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參數(shù)資料
| 型號： | MC68HC05P18AMDWR3 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁數(shù)： | 21/38頁 |
| 文件大?。?/td> | 1200K |
| 代理商： | MC68HC05P18AMDWR3 |
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28
MB89143A/144A
5. A/D Converter Electrical Characteristics
(VCC = 5.0 V
±10%, AVSS = VSS = 0.0 V, FCH = 8 MHz, TA = –40°C to +85°C)
Notes:
The smaller the | AVR – AVSS |, the greater the error would become relatively.
The output impedance of the external circuit for the analog input must satisfy the following conditions:
Output impedance of the external circuit < Approx. 10 k
If the output impedance of the external circuit is too high, an analog voltage sampling time might be
insufcient (sampling time = 22
s at 8 MHz oscillation).
Parameter
Symbol
Pin
Condition
Value
Unit Remarks
Min.
Typ.
Max.
Resolution
—
8
bit
Total error
—
±3.0
LSB
Linearity error
—
±1.0
LSB
Differential linearity
error
——
—
±0.9
LSB
Zero transition
voltage
VOT
AN0 to AN7
—
AVSS – 1.5 LSB AVSS + 0.5 LSB AVSS + 2.5 LSB
mV
Full-scale transition
voltage
VFST
AN0 to AN7
—
AVR – 3.5 LSB AVR – 1.5 LSB AVR + 0.5 LSB
mV
Interchannel
disparity
—
1.0
LSB
A/D conversion time
—
44 tinst
—
s
Sense mode
conversion time
—
12 tinst
—
s
Analog port input
current
IAIN
AN0 to AN7
AVR =
VCC = 5.0 V
——
10
A
Analog input voltage
—
AN0 to AN7
—
0
—
AVR
V
Reference voltage
—
AVR
—
4.5
—
VCC
V
Reference-voltage
supply current
IR
AVR
AVR = 5.0 V
—
200
—
A
Analog input pin
Sample hold circuit
C = 33 pF
If the analog input
impedance is 10 k
or more, it is
recommended to
connect an external
capacitor of approx.
0.1
F.
Comparator
R = 6 k
Analog channel selector
Close for 8 instruction cycles after
activating A/D conversion.
.
Analog Input Equivalent Circuit
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