- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377908 > MB89623RPFM (FUJITSU LTD) 8-bit Proprietary Microcontroller PDF資料下載
參數(shù)資料
| 型號： | MB89623RPFM |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-bit Proprietary Microcontroller |
| 中文描述： | 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | PLASTIC, QFP-64 |
| 文件頁數(shù)： | 44/61頁 |
| 文件大小： | 915K |
| 代理商： | MB89623RPFM |
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頁當(dāng)前第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
44
MB89620R Series
7. Notes on Using A/D Converter
Input impedance of the analog input pins
The A/D converter contains a sample hold circuit as illustrated below to fetch analog input voltage into the
sample hold capacitor for eight instruction cycles after activating A/D conversion.
For this reason, if the output impedance of the external circuit for the analog input is high, analog input voltage
might not stabilize within the analog input sampling period. Therefore, it is recommended to keep the output
impedance of the external circuit low (below 10 k
).
Note that if the impedance cannot be kept low, it is recommended to connect an external capacitor of about
0.1
μ
F for the analog input pin.
Error
The smaller the | AVR – AV
SS
|, the greater the error would become relatively.
V
OT
V
OT
V
NT
V
NT
V
(N + I)T
V
V
FST
V
Digital output
(1 LSB
×
N + V
OT
)
×
OT
)
0000
0000
0001
0010
1111
1111
1111
1111
1 LSB =
AVR
256
Linearity error =
V
NT
– (1 LSB
×
N + V
OT
)
1 LSB
Analog input
Differential linearity error =V
(( N + 1 ) T
– V
NT
1 LSB
– 1
Total error =
1 LSB
V
NT
– (1 LSB
×
N + 1 LSB)
V
NT
×
Linearity error
Theoretical conversion value
Actual conversion value
V
NT
×
OT
)
NT
Analog channel selector
Analog input pin
Comparator
Close for 8 instruction cycles after activating
A/D conversion.
If the analog input
impedance is higher
than 10 k
, it is
recommended to
connect an external
capacitor of approx.
0.1
μ
F.
R .
Sample hold circuit
C .
Analog Input Equivalent Circiut
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MB89623RPFV | 8-bit Proprietary Microcontroller |
| MB89625R | Octal Buffers/Drivers With 3-State Outputs 20-CDIP -55 to 125 |
| MB89626RP-SH | Octal Transparent D-type Latches With 3-State Outputs 20-CDIP -55 to 125 |
| MB89626RPF | Octal Transparent D-type Latches With 3-State Outputs 20-CFP -55 to 125 |
| MB89626RPFM | Octal Edge-Triggered D-type Flip-Flops With 3-State Outputs 20-LCCC -55 to 125 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB89623RPFV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89623RP-SH | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89625 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89625PF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89625PFM | 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)。