ST72321AR6-Auto STMicroelectronics, ST72321AR6-Auto Datasheet - Page 172

• Manufacturer Part Number: ST72321AR6-Auto
• Description: 8-bit MCU for automotive with 32 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321AR6-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt, Wait and Slow

10-bit A/D converter (ADC)
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10-bit A/D converter (ADC)
Introduction
The on-chip Analog to Digital Converter (ADC) peripheral is a 10-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 10-bit data register. The A/D converter is
controlled through a control/status register.
Main features
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The block diagram is shown in
Figure 70. ADC block diagram
f
CPU
AIN0
AINx
AIN1
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)
DIV 2
DIV 4
ANALOG
MUX
EOC SPEED ADON
ADCDRH
4
0
1
Doc ID 13829 Rev 1
Figure
f
ADC
ADCDRL
70.
D9
0
D8
CH3
0
D7
CH2
0
D6
CH1
0
D5
CH0
0
D4
ADCCSR
0
ANALOG TO DIGITAL
D3
CONVERTER
ST72321xx-Auto
0
D2
D1
D0