HD64F2145 Datasheet, PDF (594/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

20.2 Input/Output Pins
Table 20.1 summarizes the input/output pins used by the D/A converter.
Table 20.1 Pin Configuration
Pin Name
Analog power supply pin
Analog ground pin
Analog output pin 0
Analog output pin 1
Reference power supply
pin
Symbol
AVCC
AVSS
DA0
DA1
AVref
I/O
Input
Input
Output
Output
Input
Function
Analog block power supply
Analog block ground and reference voltage
Channel 0 analog output
Channel 1 analog output
Analog block reference voltage
20.3 Register Descriptions
The D/A converter has the following registers.
• D/A data register 0 (DADR0)
• D/A data register 1 (DADR1)
• D/A control register (DACR)
20.3.1 D/A Data Registers 0 and 1 (DADR0, DADR1)
DADR0 and DADR1 are 8-bit readable/writable registers that store data for D/A conversion.
When analog output is permitted, D/A data register contents are converted and output to analog
output pins. DADR0 and DADR1 are initialized to H′00.
Rev. 2.0, 08/02, page 554 of 788