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7540 Datasheet(PDF) 158 Page - Renesas Technology Corp

Part # 7540
Description  8-BIT CISC SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 740 SERIES
PDF  366 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7540 Datasheet(HTML) 158 Page - Renesas Technology Corp

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2-82
REJ09B0018-0200Z
Rev.2.00
Jun 21, 2004
APPLICATION
7540 Group
2.5 Timer Y and timer Z
(3) Application example of programmable waveform generation mode
Outline: The waveform extension function is used and the waveform output is executed.
Specifications: The “H” width generated by TYP and the “L” width generated by TYS are output. Set
each waveform extension function to be valid, and set the duty ratio to be 2:1. The
frequency is 40 kHz.
Operation clock: f(XIN) = 8 MHz, high-speed mode
Figure 2.5.26 shows an example of waveform output and Figure 2.5.27 shows an example of control
procedure.
Fig. 2.5.26 Example of waveform output
q 40 kHz pulse is output
TYOUT pin output
16.7
µs8.3 µs
Duty ratio
Waveform extended
21
:
Waveform extended



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