HD6473837H Datasheet, PDF (315/562 Pages) Renesas Technology Corp – Hardware Manual

11.1.3 Pin Configuration
Table 11.1 shows the output pin assigned to the 14-bit PWM.
Table 11.1 Pin Configuration
Name
PWM output pin
Abbrev.
PWM
I/O
Output
Function
Pulse-division PWM waveform output
11.1.4 Register Configuration
Table 11.2 shows the register configuration of the 14-bit PWM.
Table 11.2 Register Configuration
Name
PWM control register
PWM data register U
PWM data register L
Abbrev.
R/W
PWCR
W
PWDRU
W
PWDRL
W
Initial Value
H'FE
H'C0
H'00
Address
H'FFD0
H'FFD1
H'FFD2
11.2 Register Descriptions
11.2.1 PWM Control Register (PWCR)
PWCR is an 8-bit write-only register for input clock selection.
Upon reset, PWCR is initialized to H'FE.
Bits 7 to 1—Reserved Bits: Bits 7 to 1 are reserved; they are always read as 1, and cannot be
modified.
Bit 0—Clock Select 0 (PWCR0): Bit 0 selects the clock supplied to the 14-bit PWM. This bit is a
write-only bit; it is always read as 1.
Bit 0: PWCR0 Description
0
The input clock is φ/2 (tφ^∗ = 2/φ). The conversion period is 16,384/φ, with a
minimum modulation width of 1/φ.
(initial value)
1
The input clock is φ/4 (tφ∗ = 4/φ). The conversion period is 32,768/φ, with a
minimum modulation width of 2/φ.
Note: tφ: Period of PWM input clock
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