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ST72340 bảng dữ liệu(PDF) 142 Page - STMicroelectronics

tên linh kiện ST72340
Giải thích chi tiết về linh kiện  8-BIT MCU WITH UP TO 16K FLASH MEMORY, 10-BIT ADC, TWO 16-BIT TIMERS, TWO I2C, SPI, SCI
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ST72340 bảng dữ liệu(HTML) 142 Page - STMicroelectronics

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11.8 10-BIT A/D CONVERTER (ADC)
11.8.1 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 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 10-bit
Data Register. The A/D converter is controlled
through a Control/Status Register.
11.8.2 Main Features
■ 10-bit conversion
■ Up to 16 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 81.
Figure 81. 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
4
DIV 4
fADC
fCPU
D1
D0
ADCDRL
0
1
0
0
00
00
CH3
DIV 2



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