參數(shù)資料
型號: ST7285C
廠商: 意法半導(dǎo)體
英文描述: 8-BIT MCU FOR RDS WITH 48K ROM, 3K RAM, ADC, TWO TIMERS, TWO SPIs, I2C AND SCI INTERFACES
中文描述: 8位微控制器48,000鐵路發(fā)展策略光盤,3K內(nèi)存,ADC,兩個定時器,2個SPI,I2C和脊髓損傷接口
文件頁數(shù): 65/117頁
文件大小: 748K
代理商: ST7285C
65/117
ST7285C
4.6.3 Register Description
A/D CONTROL/STATUS REGISTER (CSR)
Address: 0071h
Reset Value: 00 h
Read/Write
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
μ
s) 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
7
0
COCO
0
ADON
0
0
CH2
CH1
CH0
7
0
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
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