參數(shù)資料
型號: MB95F168JAPMC-GE1
廠商: Fujitsu Semiconductor America Inc
文件頁數(shù): 54/76頁
文件大?。?/td> 0K
描述: IC MCU FLASH 60K ROM 64LQFP
標(biāo)準(zhǔn)包裝: 1
系列: F²MC MB95160MA
核心處理器: F²MC-8FX
芯體尺寸: 8-位
速度: 16MHz
連通性: I²C,LIN,SIO,UART/USART
外圍設(shè)備: LCD,LVD,POR,PWM,WDT
輸入/輸出數(shù): 52
程序存儲器容量: 60KB(60K x 8)
程序存儲器類型: 閃存
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 2.4 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x8/10b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 64-LQFP
包裝: 托盤
產(chǎn)品目錄頁面: 722 (CN2011-ZH PDF)
其它名稱: 865-1079
MB95160MA Series
58
DS07–12624–3E
(2) Notes on Using A/D Converter
About the external impedance of analog input and its sampling time
A/D converter with sample and hold circuit. If the external impedance is too high to keep sufficient sampling
time, the analog voltage charged to the internal sample and hold capacitor is insufficient, adversely affecting
A/D conversion precision. Therefore, to satisfy the A/D conversion precision standard, consider the relation-
ship between the external impedance and minimum sampling time and either adjust the register value and
operating frequency or decrease the external impedance so that the sampling time is longer than the minimum
value. Also, if the sampling time cannot be sufficient, connect a capacitor of about 0.1
μF to the analog input
pin.
About errors
As |VCC
VSS| becomes smaller, values of relative errors grow larger.
R
C
Analog input
Note : The values are reference values.
Analog input equivalent circuit
RC
4.5 V
≤ VCC ≤ 5.5 V
2.0 k
Ω (Max)
16 pF (Max)
4.0 V
≤ VCC < 4.5 V
8.2 k
Ω (Max)
16 pF (Max)
Comparator
During sampling : ON
0
2
46
8
10
12
14
0
10
20
30
40
50
60
70
80
90
100
VCC
≥ 4.5 V
VCC
≥ 4.0 V
01
23
4
0
2
4
6
8
10
12
14
16
18
20
VCC
≥ 4.5 V
VCC
≥ 4.0 V
(External impedance
= 0 kΩ to 100 kΩ)
(External impedance
= 0 kΩ to 20 kΩ)
Minimum sampling time [
μs]
Ext
er
na
lim
ped
an
ce
[
]
Minimum sampling time [
μs]
Ext
er
na
lim
ped
an
ce
[
]
The relationship between external impedance and minimum sampling time
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