Datasheet

Section 17 D/A Converter
Rev.6.00 Mar. 18, 2009 Page 683 of 980
REJ09B0050-0600
17.2 Input/Output Pins
Table 17.1 summarizes the input and output pins of the D/A converter.
Table 17.1 Pin Configuration
Pin Name Symbol I/O Function
Analog power pin AVCC Input Analog power
Analog ground pin AVSS Input Analog ground
Reference voltage pin Vref Input Reference voltage of D/A converter
Analog output pin 2 DA2 Output Channel 2 analog output
Analog output pin 3 DA3 Output Channel 3 analog output
17.3 Register Descriptions
The D/A converter has the following registers.
• D/A data register 2 (DADR2)
• D/A data register 3 (DADR3)
• D/A control register 01 (DACR01)
• D/A control register 23 (DACR23)
17.3.1 D/A Data Registers 2 and 3 (DADR2 and DADR3)
DADR2 and DADR3 are 8-bit readable/writable registers that store data for conversion.
Whenever output is enabled, the values in DADR are converted and output to the analog output
pins.