參數(shù)資料
型號(hào): MB95F476HPMC1-G-SNE2
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: MICROCONTROLLER, PQFP64
封裝: 10 X10 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-64
文件頁(yè)數(shù): 64/76頁(yè)
文件大小: 3707K
代理商: MB95F476HPMC1-G-SNE2
MB95410H/470H Series
DS702-00004-0v01-E
67
(2) Notes on Using the A/D Converter
External impedance of analog input and its sampling time
The A/D converter has a sample and hold circuit. If the external impedance is too high to keep sufficient
sampling time, the analog voltage charged to the capacitor of the internal sample and hold circuit is
insufficient, adversely affecting A/D conversion precision. Therefore, to satisfy the A/D conversion precision
standard, considering the relationship between the external impedance and minimum sampling time, either
adjust the register value and operating frequency or decrease the external impedance so that the sampling
time is longer than the minimum value. In addition, if sufficient sampling time cannot be secured, connect
a capacitor of about 0.1 F to the analog input pin.
A/D conversion error
As |VCC
VSS| decreases, the A/D conversion error increases proportionately.
Note: The values are reference values.
4.5 V
≤ VCC ≤ 5.5 V
4.0 V
≤ VCC < 4.5 V
1.95 k
Ω (Max)
8.98 k
Ω (Max)
17 pF (Max)
VCC
R
C
17 pF (Max)
Comparator
Analog input
During sampling: ON
R
C
Analog input equivalent circuit
[External impedance = 0 k
Ω to 100 kΩ]
Extern
a
limped
a
nce
[k
Ω
]
Extern
a
limped
a
nce
[k
Ω
]
Minimum sampling time [
μs]
Minimum sampling time [
μs]
[External impedance = 0 k
Ω to 20 kΩ]
100
90
80
70
60
50
40
30
20
10
0
20
18
16
14
12
10
8
6
4
2
0
0246
8
10
12
14
1
02
3
4
(VCC
≥ 4.5 V)
(VCC 4.0 V)
(VCC 4.5 V)
(VCC 4.0 V)
Relationship between external impedance and minimum sampling time
相關(guān)PDF資料
PDF描述
MB95F583HWQN-G-JNERE1 8-BIT, FLASH, 16.25 MHz, MICROCONTROLLER, PQCC32
MB95F583KWQN-G-JNE1 8-BIT, FLASH, 16.25 MHz, MICROCONTROLLER, PQCC32
MB95F564KPFT-G-JNE2 8-BIT, FLASH, 16.25 MHz, MICROCONTROLLER, PDSO20
MB95F583KPFT-G-JNE2 8-BIT, FLASH, 16.25 MHz, MICROCONTROLLER, PDSO16
MB95F562HPF-G-JNE2 8-BIT, FLASH, 16.25 MHz, MICROCONTROLLER, PDSO20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB95F478HPMC1-ES-SNE2 制造商:FUJITSU 功能描述:8-bit FX series microcontroller
MB95F478HPMC1-G-SNE2 功能描述:IC MCU 8BIT 60KB FLASH 64LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:8FX MB95470H 標(biāo)準(zhǔn)包裝:60 系列:PSOC® 3 CY8C38xx 核心處理器:8051 芯體尺寸:8-位 速度:67MHz 連通性:EBI/EMI,I²C,LIN,SPI,UART/USART 外圍設(shè)備:電容感應(yīng),DMA,LCD,POR,PWM,WDT 輸入/輸出數(shù):25 程序存儲(chǔ)器容量:64KB(64K x 8) 程序存儲(chǔ)器類型:閃存 EEPROM 大小:2K x 8 RAM 容量:8K x 8 電壓 - 電源 (Vcc/Vdd):1.71 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 2x20b,D/A 4x8b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:48-VFQFN 裸露焊盤 包裝:托盤
MB95F478HPMC2-G-SNE2 制造商:FUJITSU 功能描述:8-bit MCUs
MB95F478KPMC1-ES-SNE2 制造商:FUJITSU 功能描述:8-bit FX series microcontroller
MB95F478KPMC2-G-SNE2 制造商:FUJITSU 功能描述:8-bit MCUs