H8SLASH3028F datasheet(574/923 Pages) RENESAS

Part #	H8/3028F

Description	Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

PDF	923 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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574 / 923 page

Rev. 2.00, 09/03, page 544 of 890

15.2.2

A/D Control/Status Register (ADCSR)

Bit

Initial value

Read/Write

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: * Only 0 can be written, to clear the flag.

A/D end flag

Indicates end of A/D conversion

A/D interrupt enable

Enables and disables A/D end interrupts

A/D start

Starts or stops A/D conversion

Scan mode

Selects single mode or scan mode

Clock select

Selects the A/D conversion time

Channel select 2 to 0

These bits select analog

input channels

ADCSR is an 8-bit readable/writable register that selects the mode and controls the A/D converter.

ADCSR is initialized to H'00 by a reset and in standby mode.

Bit 7—A/D End Flag (ADF): Indicates the end of A/D conversion.

Bit 7

ADF

Description

[Clearing conditions]

(Initial value)

• Read ADF when ADF =1, then write 0 in ADF.

• DMAC activated by ADI interrupt.

[Setting conditions]

• Single mode: A/D conversion ends

• Scan mode: A/D conversion ends in all selected channels

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