H8SXSLASH1663M datasheet(1111/1504 Pages) RENESAS

1111 / 1504 page

Section 22 A/D Converter

Rev. 2.00 Sep. 24, 2008 Page 1079 of 1468

REJ09B0412-0200

22.3.5

A/D Control Register for Unit 1 (ADCR_1)

ADCR enables A/D conversion to be started by an external trigger input.

TRGS1

R/W

TRGS0

R/W

SCANE

R/W

SCANS

R/W

CKS1

R/W

CKS0

R/W

ADSTCLR

R/W

EXTRGS

R/W

Bit

Bit Name

Initial Value

R/W

Bit

Bit Name

Initial

Value

R/W

Description

TRGS1

TRGS0

EXTRGS

R/W

Timer Trigger Select 1 and 0, extended trigger select

These bits select enabling or disabling of the start of A/D

conversion by a trigger signal.

000: Disables A/D conversion start by external trigger

010: Setting prohibited

100: Setting prohibited

110: Enables A/D conversion start by the

ADTRG1 pin*1

001: Setting prohibited

011: External trigger disabled

101: Enables A/D conversion start by external trigger from

TMR (units 2 and 3)

111: Enables A/D conversion start by the

ADTRG0 pin*1

(starts units simultaneously)

Note: Do not write to ADST when activation is by an external

trigger. For details, see section 22.7.3, Notes on A/D

activation by an External Trigger.

SCANE

SCANS

R/W

Scan Mode

These bits select the A/D conversion operating mode.

0x: Single mode

10: Scan mode. A/D conversion is performed continuously for

channels 1 to 4.

11: Setting prohibited

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