CT-161-CD Fujitsu Semiconductor America Inc, CT-161-CD Datasheet - Page 77

• 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
required for counting the LED-on and -off time.
Figure 6-3 Flow
LED -on and -off time period = Count clock cycle (16 µ s) × Number of counts (62500)
The program created in this section goes into an infinite loop (No. 12 in the flow of the
program) after a sequence of the processing. During this infinite loop processing, the
CPU can execute any processing other then the LED processing. Table 6-1 Register
setting of 16-bit reload timer shows the register of the 16-bit reload timer that is set in
the program created in this section. Suppose the LED-on and -off time is one second.
The value to be set for the counter of the 16-bit reload timer can be calculated by using
the following expression accordingly.
Timer operation permission (wait for a start factor)
Software start factor of timer (starts operation)
Set P14 output level to "Low."
Timer interrupt permission
Set interrupt permission.
Set CPU interrupt level.
Set timer interrupt level.
Set P14 to output mode.
Set timer count clock.
Start of main processing
Set timer count repeat.
Set timer count value.
Set LED5 to "on."
(DDR1.bit4 = 1)
Infinite loop
of the program
Figure 6-3 Flow of the program
= 1 s
shows the flow of the program.
(12)
-
71
(1)
(3)
(4)
(6)
(5)
(9)
(2)
(7)
(8)
-
(10)
(11)
Timer interrupt processing starts.
Timer interrupt processing ends.
Timer interrupt factor is cleared.
ON/OFF switching of LED5
Timer interrupt is generated.
(14)
(13)