hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 352

• Manufacturer Part Number: hd66100
• Description: H8/3867 Series
• Manufacturer: Renesas Electronics Corporation.

Bits 3 to 0: Charge/discharge pulse duty cycle select (CDS3 to CDS0)
Bit 3
CDS3
0
0
0
0
0
0
0
0
1
1
Bits 3 to 0 select the duty cycle while the power supply split-resistance is connected to the power
supply circuit.
When a 0 duty cycle is selected, the power supply split-resistance is permanently disconnected
from the power supply circuit, so power should be supplied to pins V1, V2, and V3 by an external
circuit.
Figure 13.2 shows the waveform of the charge/discharge pulses. The duty cycle is Tc/Tw.
Charge/discharge
pulses
COM1
Bit 2
CDS2
0
0
0
0
1
1
1
1
0
1
Figure 13.2 Example of A Waveform with 1/2 Duty and 1/2 Bias
Tc
Bit 1
CDS1
0
0
1
1
0
0
1
1
*
*
T
W
Tdc
0
Bit 0
CDS0
1
0
1
0
1
0
1
*
*
1 frame
Duty Cycle
1
1/8
2/8
3/8
4/8
5/8
6/8
0
1/16
1/32
Notes
Fixed high
Fixed low
Tc
Tdc
: Power supply split-resistance
connected
: Power supply split-resistance
disconnected
(initial value)
*: Don’t care
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