參數(shù)資料
型號(hào)： MB89P147V2P-SH
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP64
封裝： PLASTIC, SDIP-64
文件頁(yè)數(shù)： 29/44頁(yè)
文件大小： 538K
代理商： MB89P147V2P-SH
35
MB89140 Series
5. A/D Converter Electrical Characteristics
(AVCC = VCC = 5.0 V+10%, FCH = 8 MHz, AVSS = VSS = 0.0 V, TA = –40
°C to +85°C)
* : For information on tinst, see “(4) Instruction Cycle” in “4. AC Characteristics.”
Notes: The smaller AVCC, the greater the error would become relatively.
The output impedance of the external circuit connected to an analog input block should be no more than
several k
. If the output impedance is too high, the analog voltage sampling time might be insufficient.
Parameter
Symbol
Pin
Condition
Value
Unit
Remarks
Min.
Typ.
Max.
Resolution
——
—
10
bit
Total error
AVCC = VCC
= 5.0 V
——
±3.0
LSB
Linearity error
—
±2.0
LSB
Differential linearity error
—
±1.5
LSB
Zero transition voltage
VOT
AN0 to
ANB
—
AVSS – 1.5 LSB
AVSS + 0.5 LSB
AVSS + 2.5 LSB
mV
Full-scale transition
voltage
VFST
AN0 to
ANB
—
AVCC – 3.5 LSB
AVCC – 1.5 LSB
AVCC + 0.5 LSB
mV
Interchannel disparity
——
—
4
LSB
A/D mode conversion
time
At 8-MHz
oscillation
33
—
tinst*
Analog port input current IAIN
AN0 to
ANB
AVCC = VCC
= 5.0 V
——
10
A
Analog input voltage
—
AN0 to
ANB
—0.0
—
AVCC
V
Comparator
3 k
60 pF
Sample hold circuit
Analog channel
selector
R
≤ 10 k is
recommended.
AN
When R > 10 k
, it is
recommended to connect
an external capacitor of
approx. 0.1 F.
Close for approx. 15 to 72 instruction cycles after
activating A/D conversion. (The close time
depends on the register settings.)
C
R
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