HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 561

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

14.5
The A/D converter generates an interrupt (ADI) at the end of A/D conversion. The ADI interrupt
request can be enabled or disabled by the ADIE bit in ADCSR.
The DTC can be activated by an ADI interrupt. Having the converted data read by the DTC in
response to an ADI interrupt enables continuous conversion to be achieved without imposing a
load on software.
The A/D converter interrupt source is shown in table 14.5.
Table 14.5 A/D Converter Interrupt Source
14.6
The following points should be noted when using the A/D converter.
Module Stop Mode Setting
Operation of the A/D converter can be disabled or enabled using the module stop control register.
The initial setting is for operation of the A/D converter to be halted. Register access is enabled by
clearing module stop mode. For details, see section 18, Power-Down Modes.
Setting Range of Analog Power Supply and Other Pins
(1) Analog input voltage range
(2) Relation between AV
(3) V
Note: If conditions (1), (2), and (3) above are not met, the reliability of the device may be
Interrupt Source
ADI
The voltage applied to analog input pins AN0 to AN3 during A/D conversion should be in the
range AV
As the relationship between AV
not used, the AV
The analog reference voltage input at the V
ref
input range
adversely affected.
Interrupts
Usage Notes
SS
ANn
CC
and AV
AV
Description
Interrupt due to end of conversion
CC
, AV
ref
.
SS
SS
pins must on no account be left open.
and V
CC
, AV
CC
, V
SS
and V
SS
ref
pin set in the range V
CC
, V
SS
, set AV
Rev.3.00 Mar. 26, 2007 Page 519 of 772
SS
= V
DTC Activation
Possible
SS
ref
. If the A/D converter is
Section 14 A/D Converter
AV
CC
.
REJ09B0355-0300