參數(shù)資料
型號(hào): ST72T631K2M0
廠商: 意法半導(dǎo)體
英文描述: LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C
中文描述: 低速USB 8高達(dá)16K的內(nèi)存位微控制器系列,高達(dá)512字節(jié)RAM,8位ADC,水分散粒劑,定時(shí)器,SCI
文件頁(yè)數(shù): 84/109頁(yè)
文件大小: 857K
代理商: ST72T631K2M0
ST7263
84/109
5.8 8-BIT A/D CONVERTER (ADC)
5.8.1 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.
5.8.2 Main Features
I
8-bit conversion
I
Up to 8 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 42
.
Figure 42. ADC Block Diagram
SAMPLE
&
HOLD
ANALOG
MUX
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
(Control Status Register) CSR
(Data Register) DR
f
CPU
ANALOG TO
DIGITAL
CONVERTER
COCO
0
CH0
CH1
CH2
-
-
ADON
AD7
AD4
AD0
AD1
AD2
AD3
AD6
AD5
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