h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 336

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 11 14-Bit PWM Timer (PWMX)
An example of the additional pulses when CFS = 1 (base cycle = resolution (T)
(inverted PWMX output) is described below. When CFS = 1, the upper eight bits (DA13 to DA6)
in DADR determine the duty cycle of the base pulse while the subsequent six bits (DA5 to DA0)
determine the locations of the additional pulses as shown in figure 11.5.
Table 11.4 lists the locations of the additional pulses.
Rev. 3.00 Jan 25, 2006 page 284 of 872
REJ09B0286-0300
DA13 DA12 DA11 DA10 DA9
Figure 11.4 Output Waveform (OS = 1, DADR corresponds to T
t
t
t
H1
f1
H1
t
Figure 11.5 D/A Data Register Configuration when CFS = 1
Duty cycle of base pulse
t
t
H1
f1
H1
= t
+ t
= t
t
+ t
f1
t
f2
f1
H2
f2
H2
= t
= t
+ t
+ t
f3
f3
H3
= ··· = t
H3
= ··· = t
+ ··· + t
+ ··· + t
t
f255
H2
t
f63
H2
a. CFS = 0 [base cycle = resolution (T)
b. CFS = 1 [base cycle = resolution (T)
H255
DA8
H63
= t
= t
t
f2
t
f2
f64
f256
+ t
+ t
= T 256
H64
H256
= T 64
DA7
= T
= T
1 conversion cycle
1 conversion cycle
H
H
DA6
t
H3
t
H3
DA5
Location of additional pulses
DA4
t
H255
t
H63
t
DA3
f255
t
f63
256]
64]
DA2
t
H256
DA1
t
H64
t
f256
t
f64
DA0
256) and OS = 1
H
)
CFS
1
1