HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 267
HD6432160
Manufacturer Part Number
HD6432160
Description
Hitachi 16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6432160.pdf
(829 pages)
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This LSI has an on-chip 14-bit pulse-width modulator (PWM) timer with two output channels. It
can be connected to an external low-pass filter to operate as a 14-bit D/A converter.
10.1
Figure 10.1 shows a block diagram of the PWM (D/A) module.
PWM1411A_010020020700
Division of pulse into multiple base cycles to reduce ripple
Two resolution settings
The resolution can be set equal to one or two system clock cycles.
Two base cycle settings
The base cycle can be set equal to T
Four operating speeds
Four operation clocks (by combination of two resolution settings and two base cycle settings)
PWX0
PWX1
Features
Legend
DACR
DADRA
DADRB
DACNT
Section 10 14-Bit PWM Timer (PWMX)
Select clock
: PWM D/A control register
: PWM D/A data register A
: PWM D/A data register B
: PWM D/A counter
Control
logic
Figure 10.1 PWM (D/A) Block Diagram
Internal clock
Base cycle compare match A
Fine–adjustment pulse addition
Base cycle compare match B
Fine–adjustment pulse addition
Base cycle overflow
Ø
Ø/2
Clock
64 or T
Comparator A
Comparator B
256, where T is the resolution.
DACNT
DACR
Rev. 2.0, 08/02, page 227 of 788
DADRA
DADRB
Internal data bus
Module data bus
Bus interface
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