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Rev. 5.00, 09/03, page 635 of 760
Section 21 D/A Converter
21.1 Overview
The SH7709S includes a D/A converter with two channels.
21.1.1 Features
D/A converter features are listed below.
• Eight-bit resolution
• Two output channels
• Conversion time: maximum 10 µs (with 20-pF capacitive load)
• Output voltage: 0 V to AVcc
21.1.2 Block Diagram
Figure 21.1 shows a block diagram of the D/A converter.
A
V
CC
DA
0
DA
1
DACR
DADR0
DADR1
Module data bus
Bus interface
On-chip
data bus
Control circuit
Legend
DACR: D/A control register
DADR0: D/A data register 0
DADR1: D/A data register 1
8-bit D/A
AV
SS
Figure 21.1 Block Diagram D/A Converter