Datasheet

Section 15 14-Bit PWM
PWM1400A_000120030300 Rev. 3.00 Sep. 10, 2007 Page 281 of 528
REJ09B0216-0300
Section 15 14-Bit PWM
The 14-bit PWM is a pulse division type PWM that can be used for electronic tuner control, etc.
Figure 15.1 shows a block diagram of the 14-bit PWM.
15.1 Features
• Choice of two conversion periods
A conversion period of 32768/φ with a minimum modulation width of 2/φ, or a conversion
period of 16384/φ with a minimum modulation width of 1/φ, can be selected.
• Pulse division method for less ripple
PWCR: PWM control register
[Legend]
Internal data bus
PWDRL: PWM data register L
PWDRU: PWM data register U
PWM: PWM output pin
PWCR
PWDRL
PWDRU
PWM
PWM waveform
generator
φ
/4
φ
/2
Figure 15.1 Block Diagram of 14-Bit PWM