参数资料
型号: ST72C171K2B6
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP32
封装: SHRINK, PLASTIC, DIP-32
文件页数: 5/152页
文件大小: 2156K
代理商: ST72C171K2B6
ST72C171
102/152
7.9 8-BIT A/D CONVERTER (ADC)
7.9.1 Introduction
The on-chip Analog to Digital Converter (ADC) pe-
ripheral is a 8-bit, successive approximation con-
verter with internal sample and hold circuitry. This
peripheral has up to 16 multiplexed analog input
channels (refer to device pin out description) that
allow the peripheral to convert the analog voltage
levels from up to 16 different sources.
The result of the conversion is stored in a 8-bit
Data Register. The A/D converter is controlled
through a Control/Status Register.
7.9.2 Main Features
s
8-bit conversion
s
Up to 16 channels with multiplexed input
s
Linear successive approximation
s
Data register (DR) which contains the results
s
Conversion complete status flag
s
On/off bit (to reduce consumption)
The block diagram is shown in Figure 55.
7.9.3 Functional Description
7.9.3.1 Analog Power Supply
VDDA and VSSA are the high and low level refer-
ence voltage pins. In some devices (refer to device
pin out description) they are internally connected
to the VDD and VSS pins.
Conversion accuracy may therefore be impacted
by voltage drops and noise in the event of heavily
loaded or badly decoupled power supply lines.
See electrical characteristics section for more de-
tails.
Figure 55. ADC Block Diagram
CH2
CH1
CH3
COCO
0
ADON
0
CH0
ADCCSR
AIN0
AIN1
ANALOG TO DIGITAL
CONVERTER
AINx
ANALOG
MUX
RADC
CADC
D2
D1
D3
D7
D6
D5
D4
D0
ADCDR
4
DIV 2
fADC
fCPU
HOLD CONTROL
相关PDF资料
PDF描述
ST72E85A5G0 8-BIT, UVPROM, 4.332 MHz, MICROCONTROLLER, CQFP80
ST72F321J9T7 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
ST72F321J7T3 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
ST72F321J7T1 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
ST72F321J9T5 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
相关代理商/技术参数
参数描述
ST72C171K2M6 功能描述:8位微控制器 -MCU Flash 8K SPI/SCI 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
ST72C215G2B6 功能描述:8位微控制器 -MCU Flash 8K SPI 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
ST72C215G2M3 制造商:STMicroelectronics 功能描述:MCU 8-Bit ST7 CISC 8KB Flash 3.3V/5V 28-Pin SO Tube 制造商:STMicroelectronics 功能描述:MCU 8BIT ST7 CISC 8KB FLASH 3.3V/5V 28SOIC - Rail/Tube
ST72C215G2M5 制造商:STMicroelectronics 功能描述:MCU 8BIT ST7 CISC 8KB FLASH 3.3V/5V 28SOIC - Rail/Tube
ST72C215G2M6 功能描述:8位微控制器 -MCU Flash 8K SPI 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