参数资料
型号: ATTINY24A-SSN
厂商: Atmel
文件页数: 118/135页
文件大小: 0K
描述: IC MCU AVR 2KB FLASH 20MHZ 14SOI
产品培训模块: MCU Product Line Introduction
tinyAVR Introduction
标准包装: 57
系列: AVR® ATtiny
核心处理器: AVR
芯体尺寸: 8-位
速度: 20MHz
连通性: USI
外围设备: 欠压检测/复位,POR,PWM,温度传感器,WDT
输入/输出数: 12
程序存储器容量: 2KB(1K x 16)
程序存储器类型: 闪存
EEPROM 大小: 128 x 8
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 105°C
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
包装: 管件
MB91470/480 Series
82
External impedance and sampling time of analog inputs
The A/D converter is fitted with a sample and hold circuit. If the external impedance is so high that there is not
sufficient time for sampling, the internal sample and hold capacitor will not fully charge to the analog voltage,
and the precision of the A/D conversion will be adversely affected. Therefore, in order to satisfy the A/D
conversion precision specifications, either adjust the register values and operating frequency or reduce the
external impedance so that the sampling time is greater than the minimum value as given by the relationship
between external impedance and minimum sampling time. If you are still unable to hold enough sampling time,
connect a capacitor of about 0.1
F to the analog input pin.
About errors
The relative error increases as the value of |AVRH
AVSS| decreases.
R
C
Comparator
8/10-bit A/D converter
12-bit A/D converter
R
4.6 k
1.0 k
C
12.5 pF
18.0 pF
Analog input circuit schematic
During sampling : ON
Analog input
Note : The values are reference values.
8/10-bit A/D converter
12-bit A/D converter
100
90
80
70
60
50
40
30
20
10
0
8/10-bit A/D converter
12-bit A/D converter
20
18
16
14
12
10
8
6
4
2
0
024
14
12
10
8
6
0
0.4
0.8
2.8
2.4
2.0
1.6
1.2
3.2
The relationship between the external impedance and minimum sampling time
(External impedance
= 0 k to 100 k)
(External impedance
= 0 k to 20 k)
External
impedance
[k
]
Minimum sampling time [
s]
External
impedance
[k
]
Minimum sampling time [
s]
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相关代理商/技术参数
参数描述
ATTINY24A-SSNR 功能描述:8位微控制器 -MCU AVR 2KB FL 128B EE USI ADC 20MHz 105C RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ATTINY24A-SSU 功能描述:8位微控制器 -MCU 20MHz, Ind Temp 1.8-5.5V, Green RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ATTINY24A-SSUR 功能描述:8位微控制器 -MCU AVR 2KB FLSH 128B EE USI ADC 20MHz 1.8V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ATTINY24V 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
ATTINY24V_09 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash