HD6473847RHV Datasheet, PDF (340/546 Pages) Renesas Technology Corp – Renesas 8-Bit Single-Chip Microcomputer H8 Family / H8/300L Super Low Power Series

Section 11 10-Bit PWM
11.3 Register Descriptions
The 10-bit PWM has the following registers.
• PWM control register (PWCR)
• PWM data register U (PWDRU)
• PWM data register L (PWDRL)
11.3.1 PWM Control Register (PWCR)
On the H8/3802 Group, H8/38004 Group and H8/38002S Group, PWCR selects the conversion
period.
Bit
7 to 2
Initial
Bit Name Value R/W
⎯
All 1
⎯
1
PWCR1 0
W
0
PWCR0 0
W
Legend: tφ: Period of PWM clock input
Description
Reserved
These bits are always read as 1, and cannot be
modified.
Clock Select 1, 0
00: The input clock is φ (tφ = 1/φ)
⎯ The conversion period is 512/φ, with a minimum
modulation width of 1/2φ
01: The input clock is φ/2 (tφ = 2/φ)
⎯ The conversion period is 1024/φ, with a
minimum modulation width of 1/φ
10: The input clock is φ/4 (tφ = 4/φ)
⎯ The conversion period is 2048/φ, with a
minimum modulation width of 2/φ
11: The input clock is φ/8 (tφ = 8/φ)
⎯ The conversion period is 4096/φ, with a
minimum modulation width of 4/φ
Rev. 7.00 Mar. 08, 2010 Page 308 of 510
REJ09B0024-0700