M16C65 Datasheet, PDF (465/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
21. Pulse Width Modulator
21. Pulse Width Modulator
Note
The 80-pin package does not have pins P4_6 and P4_7. Use pins P9_3 and P9_4 for PWM0 and
PWM1 output.
21.1 Introduction
The pulse width modulator (PWM) consists of two independent PWM circuits. Table 21.1 lists PWM
Specification, Figure 21.1 shows Block Diagram of PWM, and Table 21.2 lists I/O Port.
Table 21.1 PWM Specification
Item
Resolution
Count source
PWM Cycle
8 bits
f1 divided by 2, 4, 8, or 16
Specification
(2⁸ - 1) × (m + 1) _{(Unit : s)}
fj
High-level pulse width
m: PWMPREi register setting value
fj: Count source frequency (Unit : Hz)
(m + 1) × n _{(Unit : s)}
fj
Selectable function
i = 0, 1
m: PWMPREi register setting value
n: PWMREGi register setting value
fj: Count source frequency (Unit : Hz)
Select output pin: P4 or P9
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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