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參數(shù)資料
| 型號： | MB90F387SPMT |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP48 |
| 封裝： | PLASTIC, LQFP-48 |
| 文件頁數(shù)： | 48/64頁 |
| 文件大?。?/td> | 1777K |
| 代理商： | MB90F387SPMT |
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MB91260B Series
52
DS07-16507-3E
About the external impedance of the analog input and its sampling time
A/D converter with sample & hold circuit. If the external impedance is too high to keep sufficient sampling time,
the analog voltage charged to the internal sampling and hold capacitor is insufficient, adversely affecting A/D
conversion precision. So, 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. Also, if the
sampling time cannot be sufficient, connect a capacitor of about 0.1
F to the analog input pin.
About errors
As |AVRH
AVSS| becomes smaller, values of relative errors grow larger.
C
R
Analog input circuit model
Comparator
During sampling : ON
Analog input
Note : The values are reference values.
RC
MB91263B
2.0 k
(Max) 14.4 pF (Max)
MB91264B
2.0 k
(Max) 14.4 pF (Max)
MB91F264B
2.0 k
(Max) 16.0 pF (Max)
0
2468
10
20
30
40
50
60
70
80
90
100
MB91F264B
MB91263B
MB91264B
0
123
2
4
6
8
10
12
14
16
18
20
MB91F264B
MB91263B
MB91264B
(External impedance
= 0 k to 100 k)
Minimum sampling time (
s)
E
x
te
rn
al
im
pe
da
n
c
e
(k
)
(External impedance
= 0 k to 20 k)
Minimum sampling time (
s)
E
x
te
rn
al
im
pe
da
n
c
e
(k
)
The relationship between the external impedance and minimum sampling time
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB90F387SPMT-GSE1 | 功能描述:IC MCU FLASH 64K ROM 48LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:F²MC MB90385 產(chǎn)品培訓(xùn)模塊:MCU Product Line Introduction XMEGA Introduction AVR XMEGA USB Connectivity 標(biāo)準(zhǔn)包裝:90 系列:AVR® XMEGA 核心處理器:AVR 芯體尺寸:8/16-位 速度:32MHz 連通性:I²C，IrDA，SPI，UART/USART 外圍設(shè)備:欠壓檢測/復(fù)位，DMA，POR，PWM，WDT 輸入/輸出數(shù):50 程序存儲器容量:192KB（96K x 16） 程序存儲器類型:閃存 EEPROM 大小:4K x 8 RAM 容量:16K x 8 電壓 - 電源 (Vcc/Vdd):1.6 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 16x12b; D/A 2x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:64-TQFP 包裝:托盤 配用:ATSTK600-RC14-ND - STK600 SOCKET/ADAPTER 64TQFPATSTK600-TQFP64-ND - STK600 SOCKET/ADAPTER 64-TQFPATAVRONEKIT-ND - KIT AVR/AVR32 DEBUGGER/PROGRMMRATAVRISP2-ND - PROGRAMMER AVR IN SYSTEM |
| MB90F394HPMCR-GE1 | 制造商:FUJITSU 功能描述: |
| MB90F395HAPMCR-GS-SPE | 制造商:FUJITSU 功能描述:16-BIT, FLASH, 24 MHZ, MICROCONTROLLER, PQFP120 |
| MB90F428GAPMC-GSE1 | 制造商:FUJITSU 功能描述: |
| MB90F428GCPFR-GSE1 | 制造商:FUJITSU 功能描述: |
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