Rev.6.00 Oct.28.2004 page 555
of 1016
REJ09B0138-0600H
Section 17 D/A Converter
17.1
Overview
The H8S/2357 Group includes a two-channel D/A converter.
17.1.1
Features
D/A converter features are listed below
•
8-bit resolution
•
Two output channels
•
Maximum conversion time of 10
µ
s (with 20 pF load)
•
Output voltage of 0 V to V
ref
•
D/A output hold function in software standby mode
•
Module stop mode can be set
As the initial setting, D/A converter operation is halted. Register access is enabled by exiting module stop mode.
17.1.2
Block Diagram
Figure 17-1 shows a block diagram of the D/A converter.
Module data bus
Internal data bus
V
ref
AV
CC
DA1
DA0
AV
SS
8-bit
D/A
C
ont
rol circuit
DADR0
Bus interface
DADR1
DACR
Legend:
DACR:
D/A control register
DADR0,1: D/A data register 0, 1
Figure 17-1 Block Diagram of D/A Converter
Summary of Contents for ZTAT H8S/2357F
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