M32C83T datasheet(252/527 Pages) RENESAS

252 / 527 page

Page 229

17. A/D Converter

)

(

Function

A/D0 Control Register 1(1)

Bit Name

Bit

Symbol

Address

After Reset

AD0CON1

039716

0016

SCAN0

SCAN1

MD2

A/D Sweep Pin

Select Bit(2)

BITS

CKS1

VCUT

OPA1

OPA0

8/10-bit Mode

Select Bit

External Op-Amp

Connection Mode

Bit(5)

0 : No VREF connection(4)

1 : VREF connection

0 0 : ANEX0 and ANEX1 are not used(6)

0 1 : Signal into ANEX0 is A/D converted

1 0 : Signal into ANEX1 is A/D converted

1 1 : External op-amp connection mode

VREF Connection

Bit

0 : Select from fAD/2 or fAD/4

1 : Select from fAD/1 or fAD/3

0 : 8-bit mode

1 : 10-bit mode

A/D Operation

Mode Select Bit 1

0 0 : AN0, AN1 (AN0)

0 1 : AN0 to AN3 (AN0, AN1)

1 0 : AN0 to AN5 (AN0 to AN2)

1 1 : AN0 to AN7 (AN0 to AN3)

0 : Any mode other than repeat sweep mode 1

1 : Repeat sweep mode 1

Frequency Select

Bit(3)

NOTES:

1. When the AD0CON1 register is rewritten during the A/D conversion, the conversion result is

indeterminate.

2. This bit is disabled in one-shot mode and repeat mode. Pins in parentheses are those most

commonly used in the A/D conversions when the MD2 bit is set to "1".

frequency must be under 16 MHz when VCC=5V.

frequency must be under 10 MHz

when VCC=3.3V. Combination of the CKS0 and CKS1 bits selects

(see the AD0CON0 register).

4. Do not set the VCUT bit to "0" during the A/D conversion. This is a reference voltage for the A/D0.

It does not affect D/A conversion.

5. In single sweep mode and repeat sweep mode 0 or 1, the OPA1 and OPA0 bits cannot be set to

"012"or "102".

6. When the OPA1 to OPA0 bits is set to "002", set the PSL3_5 bit in PSL3 register to "0" (other than

ANEX0) and the PSL3_6 bit to "0" (other than ANEX1).

Figure 17.3 AD0CON1 Register

M32C83T Datasheet(PDF) 252 Page - Renesas Technology Corp

M32C83T Datasheet(HTML) 252 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL