Pin Functions; Pin States - Renesas H8 Series Hardware Manual

8.3.3

Pin Functions

Table 8.6 shows the port 2 pin functions.
Table 8.6 Port 2 Pin Functions
Pin Pin Functions and Selection Method
P2 /TXD The pin function depends on bit TXD in PMR7 and bit PCR2
2
TXD
PCR2
Pin function
P2 /RXD The pin function depends on bit RE in SCR3 and bit PCR2
1
RE
PCR2
Pin function
P2 /SCK The pin function depends on bits CKE1 and CKE0 in SCR3, bit COM in SMR,
0 3
and bit PCR2
CKE1
CKE0
COM
PCR2
Pin function
Legend: * Don't care
8.3.4

Pin States

Table 8.7 shows the port 2 pin states in each operating mode.
Table 8.7 Port 2 Pin States
Pins Reset
P2 /TXD High-
2
impedance
P2 /RXD
1
P2 /SCK
0 3
0
2
P2 input pin P2
2
0
1
P2 input pin P2
1
in PCR2.
0
0
0
P2 input pin P2
0
Sleep Subsleep
Retains Retains
previous previous
state state
0
1
output pin
2
0
1
output pin
1
0
0
0 1
1
output pin SCK
0
Standby Watch
High- Retains
impedance previous
state
Rev. 6.00 Sep 12, 2006 page 179 of 526
Section 8 I/O Ports
in PCR2.
2
1
*
TXD output pin
in PCR2.
1
1
*
RXD input pin
1
1
*
* *
* *
output SCK input pin
3 3
pin
Subactive Active
Functional Functional
REJ09B0326-0600