ST6209C STMicroelectronics, ST6209C Datasheet - Page 52
ST6209C
Manufacturer Part Number
ST6209C
Description
8 Bit ST6 Microcontroller with 4x8-bitADC 1x8-bit TIMER
Manufacturer
STMicroelectronics
Datasheet
1.ST6209C.pdf
(104 pages)
Specifications of ST6209C
Clock Sources
crystal/ceramic resonator or RC network, external clock, backup oscillator (LFAO)
2 Power Saving Modes
Wait and Stop
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ST6208C/ST6209C/ST6210C/ST6220C
8.3 A/D CONVERTER (ADC)
8.3.1 Introduction
The on-chip Analog to Digital Converter (ADC) pe-
ripheral is a 8-bit, successive approximation con-
verter. This peripheral has multiplexed analog in-
put channels (refer to device pin out description)
that allow the peripheral to convert the analog volt-
age levels from different sources.
The result of the conversion is stored in a 8-bit
Data Register. The A/D converter is controlled
through a Control Register.
Figure 34. ADC Block Diagram
Note: ADC not present on some devices. See device summary on page 1.
52/104
1
AIN0
AIN1
AINx
EAI EOC STA PDS
PORT
MUX
f
I/O PORT
INT
DDRx
ORx
DRx
CR3
AD
OSC
OFF
ADR7 ADR6 ADR5 ADR4
8.3.2 Main Features
■
■
■
■
■
■
■
The block diagram is shown in
CR1
AD
DIV 12
ADR
8-bit conversion
Multiplexed analog input channels
Linear successive approximation
Data register (DR) which contains the results
End of Conversion flag
On/Off bit (to reduce consumption)
Typical conversion time 70 µs (with an 8 MHz
crystal)
CR0
AD
ADCR
ANALOG TO DIGITAL
f
ADR3
ADC
CONVERTER
ADR2 ADR1
Figure
ADR0
34.
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