TMP86FS49AIUG datasheet(228/296 Pages) TOSHIBA

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17. 10-bit AD Converter (ADC)

17.2 Register configuration

TMP86FS49AIUG

17.2 Register configuration

The AD converter consists of the following four registers:

1. AD converter control register 1 (ADCCR1)

This register selects the analog channels and operation mode (Software start or repeat) in which to per-

form AD conversion and controls the AD converter as it starts operating.

2. AD converter control register 2 (ADCCR2)

This register selects the AD conversion time and controls the connection of the DA converter (Ladder

resistor network).

3. AD converted value register 1 (ADCDR1)

This register used to store the digital value fter being converted by the AD converter.

4. AD converted value register 2 (ADCDR2)

This register monitors the operating status of the AD converter.

Note 1: Select analog input channel during AD converter stops (ADCDR2<ADBF> = "0").

Note 2: When the analog input channel is all use disabling, the ADCCR1<AINDS> should be set to "1".

Note 3: During conversion, Do not perform port output instruction to maintain a precision for all of the pins because analog input

port use as general input port. And for port near to analog input, Do not input intense signaling of change.

Note 4: The ADCCR1<ADRS> is automatically cleared to "0" after starting conversion.

Note 5: Do not set ADCCR1<ADRS> newly again during AD conversion. Before setting ADCCR1<ADRS> newly again, check

ADCDR2<EOCF> to see that the conversion is completed or wait until the interrupt signal (INTADC) is generated (e.g.,

interrupt handling routine).

Note 6: After STOP or SLOW/SLEEP mode are started, AD converter control register1 (ADCCR1) is all initialized and no data can

be written in this register. Therfore, to use AD converter again, set the ADCCR1 newly after returning to NORMAL1 or

NORMAL2 mode.

AD Converter Control Register 1

ADCCR1

(001CH)

765

43210

ADRS

AMD

AINDS

SAIN

(Initial value: 0001 0000)

ADRS

AD conversion start

R/W

AMD

AD operating mode

00:

01:

10:

11:

AD operation disable

Software start mode

Reserved

Repeat mode

AINDS

Analog input control

Analog input enable

Analog input disable

SAIN

Analog input channel select

0000:

0001:

0010:

0011:

0100:

0101:

0110:

0111:

1000:

1001:

1010:

1011:

1100:

1101:

1110:

1111:

AIN0

AIN1

AIN2

AIN3

AIN4

AIN5

AIN6

AIN7

AIN8

AIN9

AIN10

AIN11

AIN12

AIN13

AIN14

AIN15

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