參數(shù)資料
型號: 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16K的內(nèi)存位微控制器系列,高達512字節(jié)RAM,8位ADC,水分散粒劑,定時器,SCI
文件頁數(shù): 86/109頁
文件大?。?/td> 857K
代理商: ST72T631K2M0
ST7263
86/109
8-BIT A/D CONVERTER (ADC)
(Cont’d)
5.8.6 Register Description
CONTROL/STATUS REGISTER (CSR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7 =
COCO
Conversion Complete
This bit is set by hardware. It is cleared by soft-
ware reading the result in the DR register or writing
to the CSR register.
0: Conversion is not complete.
1: Conversion can be read from the DR register.
Bit 6 =
Reserved
. Must always be cleared.
Bit 5 =
ADON
A/D converter On
This bit is set and cleared by software.
0: A/D converter is switched off.
1: A/D converter is switched on.
Note
: A typical 30 μs delay time is necessary for
the ADC to stabilize when the ADON bit is set.
Bit 4 =
Reserved
. Forced by hardware to 0.
Bit 3 =
Reserved
. Must always be cleared.
Bits 2:0:
CH[2:0]
Channel Selection
These bits are set and cleared by software. They
select the analog input to convert.
Table 21.
Channel Selection
*
IMPORTANT NOTE:
The number of pins AND
the channel selection vary according to the device.
REFER TO THE DEVICE PINOUT).
DATA REGISTER (DR)
Read Only
Reset Value: 0000 0000 (00h)
Bit 7:0 =
AD[7:0]
Analog Converted Value
This register contains the converted analog value
in the range 00h to FFh.
Reading this register resets the COCO flag.
7
0
COCO
-
ADON
0
-
CH2
CH1
CH0
Pin*
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
CH2
0
0
0
0
1
1
1
1
CH1
0
0
1
1
0
0
1
1
CH0
0
1
0
1
0
1
0
1
7
0
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
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