TMP86FS49AIUG datasheet(229/296 Pages) TOSHIBA

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Page 213

TMP86FS49AIUG

Note 1: Always set bit0 in ADCCR2 to "0" and set bit4 in ADCCR2 to "1".

Note 2: When a read instruction for ADCCR2, bit6 to 7 in ADCCR2 read in as undefined data.

Note 3: After STOP or SLOW/SLEEP mode are started, AD converter control register2 (ADCCR2) is all initialized and no data can

be written in this register. Therfore, to use AD converter again, set the ADCCR2 newly after returning to NORMAL1 or

NORMAL2 mode.

Note 1: Setting for "

−" in the above table are inhibited.

fc: High Frequency oscillation clock [Hz]

Note 2: Set conversion time setting should be kept more than the following time by Analog reference voltage (VAREF) .

AD Converter Control Register 2

ADCCR2

(001DH)

7654

3210

IREFON

"1"

ACK

"0"

(Initial value: **0* 000*)

IREFON

DA converter (Ladder resistor) connection

control

Connected only during AD conversion

Always connected

R/W

ACK

AD conversion time select

(Refer to the following table about the con-

version time)

000:

001:

010:

011:

100:

101:

110:

111:

39/fc

Reserved

78/fc

156/fc

312/fc

624/fc

1248/fc

Reserved

Table 17-1 ACK setting and Conversion time

Condition

Conversion

time

16 MHz

8 MHz

4 MHz

2 MHz

10 MHz

5 MHz

2.5 MHz

ACK

000

39/fc

19.5

µs

15.6

µs

001

Reserved

010

78/fc

19.5

µs

39.0

µs

15.6

µs

31.2

µs

011

156/fc

19.5

µs

39.0

µs

78.0

µs

15.6

µs

31.2

µs

62.4

µs

100

312/fc

19.5

µs39.0 µs

78.0

µs

156.0

µs

31.2

µs

62.4

µs124.8 µs

101

624/fc

39.0

µs78.0 µs

156.0

µs

62.4

µs124.8 µs-

110

1248/fc

78.0

µs

156.0

µs

124.8

µs-

111

Reserved

VAREF = 4.5 to 5.5 V

15.6

µs and more

VAREF = 3.0 to 5.5 V

31.2

µs and more

AD Converted value Register 1

ADCDR1

(001FH)

76543

210

AD09

AD08

AD07

AD06

AD05

AD04

AD03

AD02

(Initial value: 0000 0000)

AD Converted value Register 2

ADCDR2

(001EH)

76543

210

AD01

AD00

EOCF

ADBF

(Initial value: 0000 ****)

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