HD64F3687GFPV Datasheet, PDF (290/538 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 15 14-Bit PWM
15.2 Input/Output Pin
Table 15.1 shows the 14-bit PWM pin configuration.
Table 15.1 Pin Configuration
Name
Abbreviation I/O
14-bit PWM square-wave output PWM
Output
Function
14-bit PWM square-wave output pin
15.3 Register Descriptions
The 14-bit PWM has the following registers.
• PWM control register (PWCR)
• PWM data register U (PWDRU)
• PWM data register L (PWDRL)
15.3.1 PWM Control Register (PWCR)
PWCR selects the conversion period.
Initial
Bit
Bit Name Value R/W Description
7 to 1 
All 1

Reserved
These bits are always read as 1, and cannot be modified.
0
PWCR0 0
R/W Clock Select
0: The input clock is φ/2 (tφ = 2/φ)
 The conversion period is 16384/φ, with a minimum
modulation width of 1/φ
1: The input clock is φ/4 (tφ = 4/φ)
 The conversion period is 32768/φ, with a minimum
modulation width of 2/φ
Legend: tφ: Period of PWM clock input
Rev.5.00 Nov. 02, 2005 Page 256 of 500
REJ09B0027-0500