參數(shù)資料
型號： MC68HC705L1B
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP56
封裝： SDIP-56
文件頁數(shù)： 90/102頁
文件大小： 632K
代理商： MC68HC705L1B
MOTOROLA
11-6
MC68HC05L1
ELECTRICAL SPECIFICATIONS
11
Table 11-5 A/D Converter Electrical Characteristics for 2.7V Operation
CHARACTERISTICS
PARAMETER
MINIMUM
MAXIMUM
UNIT
Resolution
Number of bits resolved by the ADC
8
bits
Non-linearity
Maximum deviation from the best straight line through the
ADC transfer characteristics (VRH=VDD and VRL=0V)
—
±1
LSB
Quantization error
Uncertainty due to converter resolution
—
±0.5
LSB
Absolute accuracy
Difference between the actual input voltage and the
full-scale equivalent of the binary code output code for all
errors
—
±1.5
LSB
Conversion range
Analog input voltage range
VRL
VRH
V
VRH
Maximum analog reference voltage
VRL
VDD+0.1
V
VRL
Minimum analog reference voltage
VSS–0.1
VRH
V
Conversion time
Total time to perform a single analog to digital conversion
Internal RC oscillator
—
32
s
Monotonicity
Conversion result never decreases with an increase in
input voltage and has no missing codes
Guaranteed
Zero-input reading
Conversion result when VIN=VRL
00
—
hex
Full-scale reading
Conversion result when VIN=VRH
—FF
hex
Sample acquisition time
Analog input acquisition sampling
Internal RC oscillator(1)
—12
s
Sample/hold capacitance
Input capacitance on PC0/AN0-PC5/AN5
—
12
pF
Input leakage(2)
Input leakage on ADC pins
(a) PC0/AN0-PC5/AN5
(b) VRL, VRH
—
10
1
A
(1) Source impedances greater than 10K
will adversely affect internal 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.
TPG
86
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