HD64F2149 Datasheet, PDF (318/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

10.1.2 Block Diagram
Figure 10.1 shows a block diagram of the PWM D/A module.
PWX0
PWX1
Internal clock
ø
ø/2
Clock selection
Clock
Basic cycle
compare-match A
Fine-adjustment
pulse addition A
Basic cycle
compare-match B
Fine-adjustment
pulse addition B
Control logic
Comparator
A
Comparator
B
Basic cycle overflow
DACNT
Internal data bus
Bus interface
DADRA
DADRB
DACR
Legend:
DACR: PWM D/A control register ( 6 bits)
DADRA: PWM D/A data register A (15 bits)
DADRB: PWM D/A data register B (15 bits)
DACNT: PWM D/A counter (14 bits)
Figure 10.1 PWM D/A Block Diagram
Module data bus
10.1.3 Pin Configuration
Table 10.1 lists the pins used by the PWM (D/A) module.
Table 10.1 Input and Output Pins
Name
PWM output pin 0
PWM output pin 1
Abbreviation
PWX0
PWX1
I/O
Output
Output
Function
PWM output, channel A
PWM output, channel B
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