M32CSLASH8B datasheet(275/406 Pages) RENESAS

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M32C/8B Group

18. A/D Converter

Preliminary specification

Specifications in this manual are tentative and subject to change.

REJ09B0450-0050 Rev.0.50 Oct 31, 2008

Page 258 of 385

If analog input shares the pin with other peripheral function inputs, a through current may flow to the peripheral

function inputs when an intermediate voltage is applied to the pin. To prevent through current, set the control bit for the

corresponding pin to 1, and other peripheral inputs are disconnected. Table 18.2 lists settings of an analog input pin.

Table 18.2

Analog Input Pin Setting

18.1

Mode Descriptions

The A/D converter has seven different modes. Table 18.3 lists settings for these modes.

Table 18.3

Mode Settings

Port

Function

Control Bit

PSC Register

PSL3 Register

P9_5

ANEX0

−

PSL3_5 = 1

P9_6

ANEX1

−

PSL3_6 = 1

P10_4

AN_4

PSC_7 = 1

−

P10_5

AN_5

−

P10_6

AN_6

−

P10_7

AN_7

−

Mode

AD0CON0 register

AD0CON1 register

AD0CON3 register

MD1 bit

MD0 bit

MD2 bit

MSS bit

DUS bit

One-shot mode

0 or 1

Repeat mode

0 or 1

Single sweep mode

0 or 1

Repeat sweep mode 0

0 or 1

Repeat sweep mode 1

0 or 1

Multi-port single sweep mode

Multi-port repeat sweep mode 0

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