ST7MDT2-EPB2/US STMicroelectronics, ST7MDT2-EPB2/US Datasheet - Page 97
ST7MDT2-EPB2/US
Manufacturer Part Number
ST7MDT2-EPB2/US
Description
BOARD PROGRAMMING SGL POS ST7
Manufacturer
STMicroelectronics
Type
MCUr
Specifications of ST7MDT2-EPB2/US
Contents
Programmer Board
For Use With/related Products
ST72311, ST72124, ST72314, ST72334
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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14.6 8-BIT A/D CONVERTER (ADC)
14.6.1 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 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.
14.6.2 Main Features
The block diagram is shown in
Figure 51. ADC Block Diagram
8-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)
AIN0
AIN1
AINx
COCO
ANALOG
MUX
0
Figure
ADON
4
51.
R
f
CPU
ADC
ADCDR
0
CH3
CH2
D7
HOLD CONTROL
ence voltage pins. In some devices (refer to device
pin out description) they are internally connected
to the V
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 de-
tails.
14.6.3 Functional Description
14.6.3.1 Analog Power Supply
V
CH1
DDA
DIV 2
D6
CH0
and V
ST72334J/N, ST72314J/N, ST72124J
C
DD
ADC
D5
and V
ADCCSR
SSA
D4
are the high and low level refer-
SS
ANALOG TO DIGITAL
D3
pins.
f
ADC
CONVERTER
D2
D1
D0
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