Datasheet

Section 17 D/A Converter
Rev. 3.00 Mar 17, 2006 page 765 of 926
REJ09B0283-0300
17.2 Input/Output Pins
Table 17.1 shows the pin configuration of the D/A converter.
Table 17.1 Pin Configuration
Pin Name Symbol I/O Function
Analog power pin AV
CC Input Analog power
Analog ground pin AVSS Input Analog ground
Reference voltage pin Vref Input Reference voltage of D/A converter
Analog output pin 0 DA0 Output Channel 0 analog output
Analog output pin 1 DA1 Output Channel 1 analog output
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 0 (DADR0)
• D/A data register 1 (DADR1)
• 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 0 to 3 (DADR0 to DADR3)
DADR0 to 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.