ST7285C datasheet(65/117 Pages) STMICROELECTRONICS

Teilenummer	ST7285C

Bauteilbeschribung	8-BIT MCU FOR RDS WITH 48K ROM, 3K RAM, ADC, TWO TIMERS, TWO SPIs, I2C AND SCI INTERFACES

PDF	117 Pages

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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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

COCO

ADON

CH2

CH1

CH0

AD7

AD6

AD5

AD4

AD3

AD2

AD1

AD0

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