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ST7285C Datasheet(HTML) 65 Page - STMicroelectronics

Part No. ST7285C
Description  8-BIT MCU FOR RDS WITH 48K ROM, 3K RAM, ADC, TWO TIMERS, TWO SPIs, I2C AND SCI INTERFACES
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST7285C Datasheet(HTML) 65 Page - STMicroelectronics

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ST7285C
4.6.3 Register Description
A/D CONTROL/STATUS REGISTER (CSR)
Address: 0071h
Read/Write
Reset Value: 00 h
b7: COCO
Conversion Complete.
COCO is set as soon as a new conversion can be
read from the Result Data Register. COCO is
cleared by reading the result or writing to the A/D
Converter Control/Status Register.
b6: Reserved, must be programmed to 0
b5: ADON
A/D converter On.
ADON allows the A/D converter to be switched on
and off in order to reduce consumption when
needed. When turned on (ADON = 1), a delay time
(typically 10
µs) is necessary for the ADC to stabi-
lize. Conversions may be inaccurate during this
period.
b4 - b3: Reserved, must be programmed to 0.
b2-0: CH2-CH0
Channel Selection
These bits select the analog input to convert, 000
selecting AIN0 and 111 selecting AIN7 (fewer than
8 lines may be available, depending on device
specifications: see Block Diagram).
A/D DATA REGISTER (DR)
Address: 0070h
Read Only
Reset Value: (undefined)
b7-0: AD7-AD0
Analog Converted Value.
This register contains the converted analog value
in the range 00h to 0FFh
70
COCO
0
ADON
0
0
CH2
CH1
CH0
70
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0


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