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ST72101G1M1 Datasheet(PDF) 63 Page - STMicroelectronics

No. de pieza ST72101G1M1
Descripción Electrónicos  8-BIT MCU WITH 4 TO 8K ROM/OTP/EPROM, 256 BYTES RAM, ADC, WDG, SPI AND 1 OR 2 TIMERS
PDF  85 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72101G1M1 Datasheet(HTML) 63 Page - STMicroelectronics

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ST72101/ST72212/ST72213
5.5 8-BIT A/D CONVERTER (ADC)
5.5.1 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 8 multiplexed analog input
channels (refer to device pin out description) that
allow the peripheral to convert the analog voltage
levels from up to 8 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.
5.5.2 Main Features
s
8-bit conversion
s
Up to 8 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 1.
Figure 39. ADC Block Diagram
SAMPLE
ANALOG
MUX
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
(Control Status Register) CSR
(Data Register) DR
&
HOLD
fCPU
ANALOG TO
DIGITAL
CONVERTER
COCO
0CH0
CH1
CH2
-
-ADON
AD7
AD4
AD0
AD1
AD2
AD3
AD6
AD5
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