HD643303x Hitachi, HD643303x Datasheet - Page 263

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

8.4.9 ITU Output Timing
The ITU outputs from channels 3 and 4 can be disabled by bit settings in TOER or by an external
trigger, or inverted by bit settings in TOCR.
Timing of Enabling and Disabling of ITU Output by TOER: In this example an ITU output is
disabled by clearing a master enable bit to 0 in TOER. An arbitrary value can be output by
appropriate settings of the data register (DR) and data direction register (DDR) of the
corresponding input/output port. Figure 8-54 illustrates the timing of the enabling and disabling of
ITU output by TOER.
Figure 8-54 Timing of Disabling of ITU Output by Writing to TOER (Example)
ø
Address
TOER
ITU output pin
T
1
Timer output
TOER address
T
ITU output
2
248
T
3
I/O port
Generic input/output