參數(shù)資料
型號(hào)： MB89899PF
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP100
封裝： PLASTIC, QFP-100
文件頁(yè)數(shù)： 31/45頁(yè)
文件大?。?/td> 453K
代理商： MB89899PF
MB89890 Series
37
5.
A/D Converter Electrical Characteristics
(AVCC = VCC = +5.0 V
±10%, AVSS = VSS = 0.0 V, TA = –20°C to +85°C)
*: For information on tinst, see “(4) Instruction Cycle” in “4. AC Characteristics.”
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
Sym-
bol
Pin
name
Condition
Value
Unit
Remarks
Min
Typ
Max
Resolution
—
AVR =
AVCC = 5.0 V
——
8
bit
Total error
—
±1.5
LSB
Linearity error
—
±1.0
LSB
Differential linearity
error
——
±0.9
LSB
Zero transition
voltage
V0T
AVSS – 1.5
LSB
AVSS + 0.5
LSB
AVSS + 1.5
LSB
mV
1 LSB =
AVR/256
Full-scale transition
voltage
VFST
AVR – 1.5
LSB
AVR – 1.5
LSB
AVR + 1.5
LSB
mV
Interchannel disparity
—
——
0.5
LSB
A/D mode conversion
time
—
—44 tinst*—
s
Sense mode
conversion time
—12 tinst*—
s
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
AVR =
AVCC = 5.0 V
—
100
300
A
When
starting A/D
conversion
IRH
——
1
A
When
starting A/D
conversion
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