ST72C334J2B6 STMicroelectronics, ST72C334J2B6 Datasheet - Page 97
ST72C334J2B6
Manufacturer Part Number
ST72C334J2B6
Description
8-bit Microcontrollers - MCU Flash 8K SPI/SCI
Manufacturer
STMicroelectronics
Datasheet
1.ST72C334J2B6.pdf
(153 pages)
Specifications of ST72C334J2B6
Product Category
8-bit Microcontrollers - MCU
Core
ST7
Data Bus Width
8 bit
Maximum Clock Frequency
8 MHz
Program Memory Size
8 KB
Data Ram Size
384 B
On-chip Adc
Yes
Operating Supply Voltage
3.2 V to 5.5 V
Package / Case
SDIP-42
Mounting Style
Through Hole
A/d Bit Size
8 bit
A/d Channels Available
8
Data Rom Size
256 B
Interface Type
SCI, SPI
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
32
Number Of Timers
4 bit
Program Memory Type
Flash
Factory Pack Quantity
13
Supply Voltage - Max
5 V
Supply Voltage - Min
3.2 V
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ST72C334J2B6
Manufacturer:
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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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