HD64F38602R Datasheet, PDF (167/552 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 8 I/O Ports
8.4.5 Pin Functions
The relationship between the register settings and the port functions is shown below.
Note on the followings when port 9 is used.
1. When IIC is used, SSU should not be set.
2. When SSU is used, the ICE bit in IIC should be set to 0.
3. The port corresponding to the pins for SSU communication data (SSI and SSO) should not be
set.
4. When the pins for communication data (SSI and SSO) are set to open-drain output with the
SOOS bit in the SSCRH register of SSU, they are set to open-drain output regardless of the TE
and RE bit settings in the SSER register.
• P93/SSI (/IRQ1) pin
Register Name
PFCR
PCR9
Pin Function
Bit Name
IRQ1S1 and
IRQ1S0
SSUS
PCR93
Setting
Other than
x
B'01
0
P93 input pin
1
P93 output pin
0
x
SSI I/O pin
1
x
SCS I/O pin
B'01
x
x
IRQ1 input pin
[Legend] x: Don't care.
Note: When this pin is used as the SSI/SCS pin, register settings of the SSU are required. For
details, see section 15.4.4, Communication Modes and Pin Functions, and appendix B.3,
Port 9 Related Register Settings and Pin Functions.
Rev. 3.00 May 15, 2007 Page 135 of 516
REJ09B0152-0300