CT-161-CD Fujitsu Semiconductor America Inc, CT-161-CD Datasheet - Page 65

• Manufacturer Part Number: CT-161-CD
• Description: KIT 16LX FOR MB90F387
• Manufacturer: Fujitsu Semiconductor America Inc
• Series: F²MC-16LXr
• Type: MCUr

Specifications of CT-161-CD

• Contents: Board, Cable, CD
• For Use With/related Products: MB90F387S
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 865-1103

© Fujitsu
The following describes the detailed method of PPG setting:
Here, try to make settings for the output of a 4 kHz pulse wave as an example. To make
the setting easier, specify an equal count for L-level and H-level duration, and specify the
PPG count clock same as the internal CPU operating frequency. The CPU operating
frequency is 2 MHz. Therefore, the counts of L-level and H-level duration should be 250
as shown in Table 4.1.
In addition to the above pulse information, you should make settings to enable PPG pin
output and PPG operation. Table 4.1 shows all the necessary register settings.
4.4.1
Let's try to make the settings of L-level duration, H-level duration, and PPG count clock
as described in Items 4.3.1 and 4.3.2. To make these settings, write values to the
registers dedicated to PPG setting in the microcomputer. Writing a value to a register is
a programmed operation in by which the value is set in the register according to an
instruction.
Outline of the program to be created
Figure 4.7 Flow of program to sound the buzzer
Set H-level duration count.
Set L-level duration count.
Enable PPG output pin.
Enable PPG operation.
Perform initial setting.
Set PPG count clock.
Set pulse duration.
Start operation.
Infinite loop
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START
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