参数资料
型号: MB89636PF
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP64
封装: PLASTIC, QFP-64
文件页数: 35/56页
文件大小: 884K
代理商: MB89636PF
MB89630 Series
40
5. A/D Converter Electrical Characteristics
(AVCC = VCC = 3.5 V to 6.0 V, FCH = 10 MHz, AVSS = VSS = 0.0 V, TA = –40
°C to +85°C)
Precautions:
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
insufficient (sampling time = 6
s at 10MHz oscillation.)
Parameter
Symbol
Pin
Value
Unit
Remarks
Min.
Typ.
Max.
Resolution
——
10
bit
At AVCC = VCC
Linearity error
±2.0
LSB
Differential linearity error
±1.5
LSB
Total error
±3.0
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
AVR – 3.5 LSB AVR – 1.5 LSB
AVR + 0.5 LSB
mV
Interchannel disparity
——
4
LSB
A/D mode conversion time
13.2
s At 10 MHz
oscillation
Analog port input current
IAIN
AN0 to
AN7
——
10
A
Analog input voltage
0.0
AVR
V
Reference voltage
AVR
0.0
AVCC
V
Reference voltage
supply current
IR
—200
A AVR = 5.0 V
Analog Input Circuit Model
Analog input
Note: The values mentioned here should be used as a guideline.
RON1:
RON2:
C0:
C1:
Converter
C0
C1
RON2
RON1
Approx. 1.5
Approx. 1.5
Approx. 60 pF
Approx. 4 pF
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