Figure 2.18 Timer Configuration Example - Renesas H8/3847R Series Hardware Manual

Section 2 CPU
Count clock
Example 2: BSET instruction executed designating port 3
P3 and P3 are designated as input pins, with a low-level signal input at P3
7 6
signal at P3 . The remaining pins, P3
6
example, the BSET instruction is used to change pin P3
[A: Prior to executing BSET]
P3
7
Input/output Input
Pin state Low
level
PCR3 0
PDR3 1
[B: BSET instruction executed]
BSET #0 ,
Rev. 6.00 Aug 04, 2006 page 86 of 680
REJ09B0145-0600
Timer counter
Timer load register

Figure 2.18 Timer Configuration Example

to P3 , are output pins and output low-level signals. In this
5 0
P3 P3
6 5
Input Output
High Low
level level
0 1
0 0
The BSET instruction is executed designating port 3.
@PDR3
Read
Reload
Write
to high-level output.
0
P3 P3 P3
4 3
Output Output Output
Low Low Low
level level level
1 1 1
0 0 0
Internal bus
and a high-level
7
P3 P3
2 1 0
Output Output
Low Low
level level
1 1
0 0