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| 型號(hào)： | ST7LITE19F1B6 |
| 英文描述： | FUSE CLIP 3AG SLDR LUG TIN BRASS |
| 中文描述： | ST7LITE1 - 8單電壓閃存EEPROM的MEMORY.DATA位MCU。 ADC的。 4定時(shí)器。的SPI |
| 文件頁(yè)數(shù)： | 68/122頁(yè) |
| 文件大?。?/td> | 1716K |
| 代理商： | ST7LITE19F1B6 |
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ST7LITE0, ST7SUPERLITE
68/122
1
11.4 8-BIT A/D CONVERTER (ADC)
11.4.1 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 5 multiplexed analog input
channels (refer to device pin out description) that
allow the peripheral to convert the analog voltage
levels from up to 5 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.
11.4.2 Main Features
I
8-bit conversion
I
Up to 5 channels with multiplexed input
I
Linear successive approximation
I
Dual input range
– 0 to V
DD
or
– 0V to 250mV
I
Data register (DR) which contains the results
I
Conversion complete status flag
I
On/off bit (to reduce consumption)
I
Fixed gain operational amplifier (x8) (not
available on ST7LITES5 devices)
11.4.3 Functional Description
11.4.3.1 Analog Power Supply
The block diagram is shown in
Figure 43
.
V
DD
and V
SS
are the high and low level reference
voltage pins.
Conversion accuracy may therefore be impacted
by voltage drops and noise in the event of heavily
loaded or badly decoupled power supply lines.
For more details, refer to the Electrical character-
istics section.
11.4.3.2 Input Voltage Amplifier
The input voltage can be amplified by a factor of 8
by enabling the AMPSEL bit in the ADAMP regis-
ter.
When the amplifier is enabled, the input range is
0V to 250 mV.
For example, if V
DD
= 5V, then the ADC can con-
vert voltages in the range 0V to 250mV with an
ideal resolution of 2.4mV (equivalent to 11-bit res-
olution with reference to a V
SS
to V
DD
range).
For more details, refer to the Electrical character-
istics section.
Note:
The amplifier is switched on by the ADON
bit in the ADCCSR register, so no additional start-
up time is required when the amplifier is selected
by the AMPSEL bit.
Figure 43. ADC Block Diagram
CH2
CH1
0
EOC SPEEDADON
0
CH0
ADCCSR
AIN0
AIN1
ANALOG TO DIGITAL
CONVERTER
AINx
ANALOG
MUX
R
ADC
C
ADC
D2
D1
D3
D7
D6
D5
D4
D0
ADCDR
3
f
ADC
HOLD CONTROL
x 1 or
x 8
AMPSEL bit
(ADCAMP Register)
f
CPU
0
1
1
0
DIV 2
DIV 4
SLOW
bit
(ADCAMP Register)
0
7
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST7LITE19F1M6 | ST7LITE1 - 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY.DATA EEPROM. ADC. 4 TIMERS. SPI |
| ST890B | 1.2 CURRENT LIMITED HIGH SIDE WITH THERMAL SHUTDOWN |
| ST890C | 1.2 CURRENT LIMITED HIGH SIDE WITH THERMAL SHUTDOWN |
| ST890 | 1.2A CURRENT LIMITED HIGH SIDE WITH THERMAL SHUTDOWN |
| ST8LR2 | PHOTOTRANSISTOR | NPN | 800NM PEAK WAVELENGTH | 20M | LED-2B |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST7LITE19F1M6 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:ST7LITE1 - 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY.DATA EEPROM. ADC. 4 TIMERS. SPI |
| ST7LITE1XB | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, 5 TIMERS, SPI |
| ST7LITE1XB_08 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, 5 TIMERS, SPI |
| ST7LITE2 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT MICROCONTROLLER WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI |
| ST7LITE2_06 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT MICROCONTROLLER WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI |
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