参数资料
型号: ST7PL35F2MCXXXRE
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOP-20
文件页数: 21/168页
文件大小: 2955K
代理商: ST7PL35F2MCXXXRE
Obsolete
Product(s)
- Obsolete
Product(s)
ST7L34, ST7L35, ST7L38, ST7L39
117/168
11.6 10-BIT A/D CONVERTER (ADC)
11.6.1 Introduction
The on-chip Analog to Digital Converter (ADC) pe-
ripheral is a 10-bit, successive approximation con-
verter with internal sample and hold circuitry. This
peripheral has up to seven multiplexed analog in-
put channels (refer to device pin out description)
that allow the peripheral to convert the analog volt-
age levels from up to seven different sources.
The result of the conversion is stored in a 10-bit
Data Register. The A/D converter is controlled
through a Control/Status Register.
11.6.2 Main Features
10-bit conversion
Up to 7 channels with multiplexed input
Linear successive approximation
Data register (DR) which contains the results
Conversion complete status flag
On/off bit (to reduce consumption)
The block diagram is shown in Figure 66.
11.6.3 Functional Description
11.6.3.1 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.
Figure 66. ADC Block Diagram
CH2
CH1
EOC SPEED ADON
0
CH0
ADCCSR
AIN0
AIN1
ANALOG TO DIGITAL
CONVERTER
AINx
ANALOG
MUX
D4
D3
D5
D9
D8
D7
D6
D2
ADCDRH
3
D1
D0
ADCDRL
00
0
SLOW
0
RADC
CADC
HOLD CONTROL
fADC
fCPU
0
1
0
DIV 2
DIV 4
SLOW
bit
相关PDF资料
PDF描述
ST7PL35F2UA/XXXE 8-BIT, MROM, 8 MHz, MICROCONTROLLER, QCC20
ST7L35F2UA/XXXRE 8-BIT, MROM, 8 MHz, MICROCONTROLLER, QCC20
ST7L35F2UC/XXXRE 8-BIT, MROM, 8 MHz, MICROCONTROLLER, QCC20
ST7L39F2MC/XXXE 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
ST7L39F2UC/XXXRE 8-BIT, MROM, 8 MHz, MICROCONTROLLER, QCC20
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