参数资料
型号: MB91F356BPMT
元件分类: 微控制器/微处理器
英文描述: RISC MICROCONTROLLER, PQFP176
封装: 24 X 24 MM, 1.70 MM HEIGHT, 0.50 MM PPITCH, LEAD FREE, PLASTIC, LQFP-176
文件页数: 26/140页
文件大小: 3803K
代理商: MB91F356BPMT
MB91350A Series
DS07-16503-5E
121
About the external impedance and sampling time of the analog input
A/D converter with sample and hold circuit. If the external impedance is too high to ensure sufficient sampling
time, the analog voltage of the internal sample and hold capacitor will not be sufficiently charged, adversely
affecting the A/D conversion precision. Therefore, 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. Moreover, if sufficient sampling time cannot be ensured, connect a capacitor of about 0.1
F to the analog input pin.
About errors
The smaller the value of | AVRH
AVSS | , the greater the relative error.
R
C
Analog input circuit schematic
Analog input
During sampling : ON
Comparator
Note : The values are reference values.
RC
MB91355A/354A/353A/352A/351A
0.18 k
(Max)
63.0 pF (Max)
MB91F355A/F353A/F356B/F357B
0.18 k
(Max)
39.0 pF (Max)
100
90
80
70
60
50
40
30
20
10
0
5
10
15
20
25
30
35
MB91F355A/F356B/F357B/F353A
MB91355A/
354A/353A/
352A/351A
MB91F355A/F356B/F357B/F353A
MB91355A/
354A/353A/
352A/351A
20
18
16
14
12
10
8
6
4
2
0
012345678
(External impedance
= 0 k to 100 k)
(External impedance
= 0 k to 20 k)
E
x
te
rn
al
im
pe
da
n
c
e
[k
]
Ext
e
rn
al
imp
eda
nce
[
k
]
Minimum sampling time [
s]
Minimum sampling time [
s]
The relationship between the external impedance and minimum sampling time
相关PDF资料
PDF描述
MB91461PMC-GSE1 RISC MICROCONTROLLER, PQFP176
MB91664PMC 32-BIT, MROM, 33 MHz, RISC MICROCONTROLLER, PQFP120
MB91661PMC 32-BIT, MROM, 33 MHz, RISC MICROCONTROLLER, PQFP120
MB91F155PFV-G 32-BIT, FLASH, 33 MHz, RISC MICROCONTROLLER, PQFP144
MB91F218SPMC-GTE1 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PQFP144
相关代理商/技术参数
参数描述
MB91F357B 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:32-bit Microcontroller
MB91F357BPMT 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:32-bit Microcontroller
MB91F361GAPFVS 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:32-bit RISC Microcontroller
MB91F362GAPFVS 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:32-bit RISC Microcontroller
MB91F362GAPFVS-G-N2E1 功能描述:IC MCU 32BIT 512KB FLASH 制造商:cypress semiconductor corp 系列:FR MB91360G 零件状态:在售 核心处理器:FR50 RISC 核心尺寸:32-位 速度:64MHz 连接性:CAN,I2C,串行输入/输出,UART/USART 外设:DMA,POR,PWM,WDT I/O 数:160 程序存储容量:512KB(512K x 8) 程序存储器类型:闪存 EEPROM 容量:- RAM 容量:20K x 8 电压 - 电源(Vcc/Vdd):4.25 V ~ 5.25 V 数据转换器:A/D 8x10b,D/A 2x10b 振荡器类型:外部 工作温度:-40°C ~ 85°C(TA) 标准包装:24