参数资料
型号: MB95F136JBWPF-GE1
厂商: Fujitsu Semiconductor America Inc
文件页数: 51/64页
文件大小: 0K
描述: IC MCU 32KB FLASH 28SOP
标准包装: 1
系列: F²MC MB95130MB
核心处理器: F²MC-8FX
芯体尺寸: 8-位
速度: 16MHz
连通性: LIN,SIO,UART/USART
外围设备: LVD,POR,PWM,WDT
输入/输出数: 19
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 1K x 8
电压 - 电源 (Vcc/Vdd): 2.4 V ~ 5.5 V
数据转换器: A/D 8x8/10b
振荡器型: 外部
工作温度: -40°C ~ 105°C
封装/外壳: 28-SOP
包装: 管件
其它名称: 865-1075
MB95130MB Series
55
(2) Notes on Using A/D Converter
External impedance of analog input and its sampling time
A/D converter with sample and hold circuit. If the external impedance is too high to keep sufficient sampling
time, the analog voltage charged to the internal sample and hold capacitor is insufficient, adversely affecting
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 register 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.
Errors
As |AVCC
AVSS| becomes smaller, values of relative errors grow larger.
R
C
Analog input
Note : The values are reference values.
Analog input equivalent circuit
RC
4.5 V
≤ AVCC ≤ 5.5 V
2.0 k
(Max)
16 pF (Max)
4.0 V
≤ AVCC < 4.5 V
8.2 k
(Max)
16 pF (Max)
Comparator
During sampling : ON
20
18
16
14
12
10
8
6
4
2
0
02
13
4
100
90
80
70
60
50
40
30
20
10
0
2
4
6
8
10
12
14
(External impedance
= at 0 k to 100 k)
(External impedance
= at 0 k to 20 k)
Minimum sampling time [
s]
External
impedance
[k
]
Minimum sampling time [
s]
External
impedance
[k
]
AVCC
≥ 4.0 V
The relationship between external impedance and minimum sampling time
AVCC
≥ 4.5 V
AVCC
≥ 4.5 V
AVCC
≥ 4.0 V
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