ST72T331N2T6 STMicroelectronics, ST72T331N2T6 Datasheet - Page 83
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ST72T331N2T6
Manufacturer Part Number
ST72T331N2T6
Description
8-bit Microcontrollers - MCU OTP EPROM 8K SPI/SCI
Manufacturer
STMicroelectronics
Datasheet
1.ST72T331N2T6.pdf
(107 pages)
Specifications of ST72T331N2T6
Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
ST7
Data Bus Width
8 bit
Maximum Clock Frequency
16 MHz
Program Memory Size
8 KB
Data Ram Size
384 B
On-chip Adc
Yes
Package / Case
TQFP-64
Mounting Style
SMD/SMT
A/d Bit Size
8 bit
A/d Channels Available
8
Interface Type
SCI, SPI
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
44
Number Of Timers
2
On-chip Dac
No
Program Memory Type
EPROM
Factory Pack Quantity
90
Supply Voltage - Max
5.5 V
Supply Voltage - Min
3.5 V
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5.7 8-BIT A/D CONVERTER (ADC)
5.7.1 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.
Figure 46. ADC Block Diagram
AIN3
AIN4
AIN5
AIN6
AIN7
AIN0
AIN1
AIN2
ANALOG
MUX
f
CPU
SAMPLE
HOLD
&
COCO
AD7
5.7.2 Main Features
The block diagram is shown in
8-bit conversion
Up to 8 channels with multiplexed input
Linear successive approximation
Data register (DR) which contains the results
Conversion complete status flag
On/Off bit (to reduce consumption)
AD6
-
ADON
AD5
ANALOG TO
DIGITAL
CONVERTER
(Control Status Register) CSR
AD4
0
AD3
(Data Register) DR
-
ST72E331 ST72T331
CH2
AD2
Figure
CH1
AD1
1.
CH0
AD0
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