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ST72311J2 датащи(PDF) 72 Page - STMicroelectronics

номер детали ST72311J2
подробное описание детали  8-BIT MCU WITH 8 TO 16K ROM/OTP/EPROM, 384 TO 512 BYTES RAM, ADC, WDG, SCI, SPI AND 2 TIMERS
PDF  94 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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ST72311J2 датащи(HTML) 72 Page - STMicroelectronics

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ST72311
8-BIT A/D CONVERTER (ADC) (Cont’d)
4.6.4 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 typically 30µs 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: CH2-CH0 Channel Selection.
These bits are set and cleared by software. They
select the analog input to convert.
*IMPORTANT NOTE: The number of pins AND
the channel selection varies according to the de-
vice. REFER TO THE DEVICE PINOUT).
DATA REGISTER (DR)
Read Only
Reset Value: 0000 0000 (00h)
Bit 7:0 = AD7-AD0 Analog Converted Value.
This register contains the converted analog value
in the range 00h to FFh.
Reading this register reset the COCO flag.
Table 21. ADC Register Map
70
COCO
-
ADON
0
-
CH2
CH1
CH0
Pin*
CH2
CH1
CH0
AIN0
0
0
0
AIN1
0
0
1
AIN2
0
1
0
AIN3
0
1
1
AIN4
1
0
0
AIN5
1
0
1
AIN6
1
1
0
AIN7
1
1
1
70
AD7AD6
AD5AD4
AD3AD2
AD1
AD0
Address
(Hex.)
Register
Name
765
4
3210
70
Reset Value
DR
AD7
0
AD6
0
AD5
0
AD4
0
AD3
0
AD2
0
AD1
0
AD0
0
71
Reset Value
CSR
COCO
0
-
0
ADON
0
0
0
-
0
CH2
0
CH1
0
CH0
0
72



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