HD6432138SW datasheet(601/1061 Pages) RENESAS

601 / 1061 page

Section 18 D/A Converter

Rev. 4.00 Jun 06, 2006 page 547 of 1004

REJ09B0301-0400

Bit 6—D/A Output Enable 0 (DAOE0): Controls D/A conversion and analog output.

Bit 6

DAOE0

Description

Analog output DA0 is disabled

(Initial value)

D/A conversion is enabled on channel 0. Analog output DA0 is enabled

Bit 5—D/A Enable (DAE): Controls D/A conversion, in combination with bits DAOE0 and

DAOE1. D/A conversion is controlled independently on channels 0 and 1 when DAE = 0.

Channels 0 and 1 are controlled together when DAE = 1.

Output of the converted results is always controlled independently by DAOE0 and DAOE1.

Bit 7

DAOE1

Bit 6

DAOE0

Bit 5

DAE

D/A conversion

Disabled on channels 0 and 1

Enabled on channel 0

Disabled on channel 1

Enabled on channels 0 and 1

Disabled on channel 0

Enabled on channel 1

Enabled on channels 0 and 1

*: Don’t care

If the H8S/2138 Group chip enters software standby mode while D/A conversion is enabled, the

D/A output is retained and the analog power supply current is the same as during D/A conversion.

If it is necessary to reduce the analog power supply current in software standby mode, disable D/A

output by clearing both the DAOE0, DAOE1 and DAE bits to 0.

Bits 4 to 0—Reserved: These bits cannot be modified and are always read as 1.

HD6432138SW Datasheet(PDF) 601 Page - Renesas Technology Corp