- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377918 > MB90487PFV (FUJITSU LTD) 16-bit Proprietary Microcontroller CMOS PDF資料下載
參數(shù)資料
| 型號： | MB90487PFV |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-bit Proprietary Microcontroller CMOS |
| 中文描述： | 16-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | PLASTIC, LQFP-100 |
| 文件頁數(shù)： | 104/113頁 |
| 文件大?。?/td> | 522K |
| 代理商： | MB90487PFV |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁當前第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁
MB90480/485 Series
104
(Continued)
<About the external impedance of the 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.
To satisfy the A/D conversion precision standard, consider the relationship between the external impedance
and minimum sampling time and either adjust the resistor value and operating frequency or decrease the
external impedance so that the sampling time is longer than the minimum value.
The relationship between external impedance and minimum sampling time
If the sampling time cannot be sufficient, connect a capacitor of about 0.1
μ
F to the analog input pin.
<About errors>
As |AVRH
AV
SS
| becomes smaller, values of relative errorsgrow larger.
Note : Concerning sampling time, and compare time When 3.6 V
≥
AV
CC
≥
2.7 V, then
Sampling time : 1.92
μ
s, compare time : 1.1
μ
s
Settings should ensure that actual values do not go below these values due to operating frequency changes.
R
C
During sampling : ON
Analog input
Comparator
Note: The values are reference values.
Analog input circuit model
R
C
MB90487
MB90F481/F482
MB90F488
2.5 k
(Max) 31.0 pF (Max)
1.9 k
(Max) 25.0 pF (Max)
1.9 k
(Max) 25.0 pF (Max)
MB90F481/F482
MB90F488
MB90487
100
90
80
70
60
50
40
30
20
10
0
0
5
→
Minimum sampling time [
μ
s]
10
15
20
25
30
35
MB90F481/F482
MB90F488
MB90487
20
18
16
14
12
10
8
6
4
2
0
0
1
2
3
4
5
6
8
7
External impedance
=
0 k
to 100 k
External impedance
=
0 k
to 100 k
→
Minimum sampling time [
μ
s]
→
]
→
]
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MB90F480 | 16-bit Proprietary Microcontroller CMOS |
| MB90F485 | 16-bit Proprietary Microcontroller CMOS |
| MB90F488 | 16-bit Proprietary Microcontroller CMOS |
| MB90F488PF | 16-bit Proprietary Microcontroller CMOS |
| MB90F488PFV | 16-bit Proprietary Microcontroller CMOS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB90488B | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90488BPF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90488BPFV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90488BPMC | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Microcontroller |
| MB90495 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller CMOS |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。