Hardware manual

Rev. 3.0, 09/98, page 99 of 361
RP4
Reset
Reset
WP4
WP4D
R
R
Q
Q
D
D
P4n DR
P4n DDR
C
C
WP4D:
WP4:
RP4:
n = 1, 4, 6, 7
Write Port 4 DDR
Write Port 4
Read Port 4
8-bit timer module,
PWM timer module
Output enable
8-bit timer output
or PWM timer output
P4n
Internal data bus
Figure 6.4 (b) Port 4 Schematic Diagram (Pins P4
1
, P4
4
, P4
6
, and P4
7
)