參數(shù)資料
型號: MB89W689CF
元件分類: 微控制器/微處理器
英文描述: 8-BIT, UVPROM, 8 MHz, MICROCONTROLLER, CQFP100
封裝: CERAMIC, QFP-100
文件頁數(shù): 26/43頁
文件大小: 697K
代理商: MB89W689CF
32
MB89680 Series
5. A/D Converter Electrical Characteristics
(AVCC = VCC = 3.5 V to 6.0 V, AVSS = VSS = 0.0 V, TA = –40
°C to +85°C)
* : For information on tinst, see “(4) Instruction Cycle.”
6. A/D Converter Glossary
Resolution
Analog changes that are identifiable by the A/D converter
When the number of bits is 8, analog voltage can be divided into 28 = 256.
Linearity error (unit: LSB)
The deviation of the straight line connecting the zero transition point (“0000 0000”
“0000 0001”) with the
full-scale transition point (“1111 1111”
“1111 1110”) from actual conversion characteristics
Differential linearity error (unit: LSB)
The deviation of input voltage needed to change the output code by 1 LSB from the theoretical value
Total error (unit: LSB)
The difference between theoretical and actual conversion values
Parameter
Symbol
Pin
name
Condition
Value
Unit
Remarks
Min.
Typ.
Max.
Resolution
AVR = AVCC
= 5.0 V
——
8
bit
Total error
AVR = AVCC
——
±1.5
LSB
Linearity error
±1.0
LSB
Differential linearity
error
——
±0.9
LSB
Zero transition
voltage
V0T
AVss
–1.0 LSB
AVss
+0.5 LSB
AVss
+2.0 LSB
mV
1 LSB =
AVR/256
Full-scale transition
voltage
VFST
AVR
–3.0 LSB
AVR
–1.5 LSB
AVR
mV
Interchannel
disparity
——
0.5
LSB
A/D mode
conversion time
——
—44
tinst*
Sense mode
conversion time
——
12
tinst*
Analog port input
current
IAIN
AN00 to
AN07
——
10
A
Analog input voltage
AN00 to
AN07
0.0
AVR
V
Reference voltage
AVR
0.0
AVCC
V
Reference voltage
supply current
IR
AVR
AVR = AVCC
= 5.0 V
100
300
A
IRH
AVR
1
A
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