- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377907 > MB89538HPFV (FUJITSU LTD) 8-bit Original Microcontroller CMOS PDF資料下載
參數(shù)資料
| 型號： | MB89538HPFV |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-bit Original Microcontroller CMOS |
| 中文描述： | 8-BIT, MROM, 12.5 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 45/56頁 |
| 文件大?。?/td> | 456K |
| 代理商： | MB89538HPFV |
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頁當(dāng)前第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
MB89530H Series
45
(4) Precautionary Information
Input Impedance of Analog Input Pins
The A/D converter of MB89530H has a sample & hold circuit as shown below, which uses a sample-and-hold
capacitor to obtain the voltage at the analog input pin for 8 instruction cycles following the start of A/D conversion.
For this reason if the external circuits providing the analog input signal have high output impedance, the analog
input voltage may not stabilize within the analog input sampling time. It is therefore recommended that the output
impedance of external circuits be reduced to 10 k
or less.
About error
The smaller the absolute value |AVR - AVss| is, the greater the relative error becomes.
MB89537H/537HC/538H/538HC Analog Input Equivalent Circuit
C
=
31 pF
R
=
3.2 k
Closes 8 instruction cycles
after the start of A/D conversion
If analog input impedance is
10 k
or more, the use of a
capacitor of approximately
0.1
μ
F is recommended.
Analog input pin
Sample-and-hold circuit
Compara-
tor
Analog channel selector
MB89P538 and MB89PV530 Analog Input Equivalent Circuit
C
=
64 pF
R
=
3 k
Closes 8 instruction cycles
after the start of A/D conversion
If analog input impedance is
10 k
or more, the use of a
capacitor of approximately
0.1
μ
F is recommended.
Analog input pin
Sample-and-hold circuit
Compara-
tor
Analog channel selector
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MB89537H | 8-bit Original Microcontroller CMOS |
| MB89537HC | 8-bit Original Microcontroller CMOS |
| MB89537HCP | 8-bit Original Microcontroller CMOS |
| MB89537HCPF | 8-bit Original Microcontroller CMOS |
| MB89537HCPFM | 8-bit Original Microcontroller CMOS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB89538P | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Original Microcontroller |
| MB89538PF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Original Microcontroller |
| MB89538PFM | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Original Microcontroller |
| MB89538PFV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Original Microcontroller |
| MB89550A | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。