參數(shù)資料
型號(hào)： ST72124J2B7
廠商： 意法半導(dǎo)體
英文描述： 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
中文描述： 8位單電壓閃存，ADC和16位定時(shí)器，SPI和脊髓損傷界面微控制器
文件頁(yè)數(shù)： 95/125頁(yè)
文件大?。?/td> 776K
代理商： ST72124J2B7
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ST72334J/N, ST72314J/N, ST72124J
95/125
6.7 8-BIT A/D CONVERTER (ADC)
6.7.1 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 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.
6.7.2 Main Features
I
8-bit conversion
I
Up to 16 channels with multiplexed input
I
Linear successive approximation
I
Data register (DR) which contains the results
I
Conversion complete status flag
I
On/off bit (to reduce consumption)
The block diagram is shown in Figure 56.
6.7.3 Functional Description
6.7.3.1 Analog Power Supply
V
DDA
and V
SSA
are the high and low level refer-
ence voltagepins. In some devices (refer to device
pin out description) they are internally connected
to the V
DD
and V
SS
pins.
Conversion accuracy may therefore be impacted
by voltage drops and noise in the event of heavily
loaded or badly decoupled power supply lines.
Figure 55. Recommended Ext. Connections
Figure 56. ADC Block Diagram
ST7
Px.x/AINx
V
DDA
V
SSA
V
DD
0.1pF
R
AIN
V
AIN
CH2
CH1
CH3
COCO
0
ADON
0
CH0
ADCCSR
AIN0
AIN1
ANALOG TO DIGITAL
CONVERTER
AINx
ANALOG
MUX
R
ADC
C
SAMPLE
D2
D1
D3
D7
D6
D5
D4
D0
ADCDR
4
DIV 2
f
ADC
f
CPU
HOLD CONTROL
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST72124J2B7/XXX 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
ST72124J2T 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
ST72124J2T1 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
ST72124J2T1/XXX 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
ST72124J2T3 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
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