HD6432351 datasheet(943/1025 Pages) RENESAS

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Appendix B Internal I/O Register

Rev. 3.00 Sep 15, 2006 page 909 of 988

REJ09B0330-0300

ADCSR—A/D Control/Status Register

H'FF98

A/D Converter

[Clearing conditions]

• When 0 is written to the ADF flag after reading ADF = 1

• When the DTC is activated by an ADI interrupt, and ADDR is read

ADF

R/(W)*

ADIE

R/W

ADST

R/W

SCAN

R/W

CKS

R/W

CH0

R/W

CH2

R/W

CH1

R/W

Note: * Can only be written with 0 for flag clearing.

Conversion time = 266 states (max.)

Conversion time = 134 states (max.)

Group Select

A/D conversion end interrupt (ADI) request disabled

A/D conversion end interrupt (ADI) request enabled

A/D Interrupt Enable

Single mode

Scan mode

Scan Mode

A/D conversion stopped

A/D Start

A/D End Flag

CH1

CH0

Single Mode

AN0

AN0, AN1

AN0 to AN2

AN0 to AN3

AN4

AN4, AN5

AN4 to AN6

AN4 to AN7

Channel Select

Bit

Initial value

Read/Write

• Single mode: A/D conversion is started. Cleared to 0

automatically when conversion ends

• Scan mode: A/D conversion is started. Conversion continues

sequentially on the selected channels until ADST is cleared to

0 by software, a reset, or transition to standby mode or

module stop mode

[Setting conditions]

• Single mode: When A/D conversion ends

• Scan mode: When one round of conversion has been performed on all specified channels

CH2

Group

select

Channel

select

AN0

AN1

AN2

AN3

AN4

AN5

AN6

AN7

Group Mode

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