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ST7263BEx 데이터시트(PDF) 125 Page - STMicroelectronics

부품명 ST7263BEx
상세설명  Low speed USB 8-bit MCU family with up to 32 KB Flash/ROM, DFU capability, 8-bit ADC, WDG, timer, SCI and I²C
PDF  186 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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ST7263BEx 데이터시트(HTML) 125 Page - STMicroelectronics

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ST7263Bxx
On-chip peripherals
Doc ID 7516 Rev 8
125/186
11.6
8-bit A/D converter (ADC)
11.6.1
Introduction
The on-chip Analog to Digital Converter (ADC) peripheral is a 8-bit, successive
approximation converter 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.
11.6.2
Main features
●
8-bit conversion
●
Up to 12 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 50.
11.6.3
Functional description
Analog power supply
VDDA and VSSA are the high and low level reference 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 details.



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