h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 297
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h8s-2161b
Manufacturer Part Number
h8s-2161b
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2161B.pdf
(845 pages)
- Current page: 297 of 845
- Download datasheet (5Mb)
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
Section 10 14-Bit PWM Timer (PWMX)
Legend:
DACR
DADRA
DADRB
DACNT
Select clock
Control
logic
: PWM D/A control register
: PWM D/A data register A
: PWM D/A data register B
: PWM D/A counter
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
/2
Clock
64 or T
Comparator A
Comparator B
256, where T is the resolution.
DACNT
DACR
Rev. 3.00 Mar 21, 2006 page 243 of 788
Section 10 14-Bit PWM Timer (PWMX)
DADRA
DADRB
Internal data bus
Module data bus
Bus interface
REJ09B0300-0300
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