HD64F2145 datasheet(265/829 Pages) RENESAS

Part #	HD64F2145

Description	Hitachi 16-Bit Single-Chip Microcomputer

PDF	829 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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265 / 829 page

Rev. 2.0, 08/02, page 225 of 788

9.4

Operation

The upper four bits of PWDR specify the duty cycle of the basic pulse as 0/16 to 15/16 with a

resolution of 1/16. Table 9.4 shows the duty cycles of the basic pulse.

Table 9.4

Duty Cycle of Basic Pulse

0123456789 A B C D E F 0

Upper 4 Bits

Basic Pulse Waveform (Internal)

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

The lower four bits of PWDR specify the position of pulses added to the 16 basic pulses. An

additional pulse adds a high period (when OS = 0) with a width equal to the resolution before the

rising edge of a basic pulse. When the upper four bits of PWDR are 0000, there is no rising edge

of the basic pulse, but the timing for adding pulses is the same. Table 9.5 shows the positions of

the additional pulses added to the basic pulses, and figure 9.2 shows an example of additional

pulse timing.

HD64F2145 Datasheet(PDF) 265 Page - Renesas Technology Corp