HD64F2145 Datasheet, PDF (221/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

8.8.1 Port 7 Input Data Register (P7PIN)
P7PIN reflects the pin states of port 7.
Bit Bit Name Initial Value R/W
Description
7
P77PIN Undefined*
R When a P7PIN read is performed, the pin states
6
P76PIN Undefined*
R
are always read. P7PIN has the same address as
PBDDR; if a write is performed, data will be written
5
P75PIN Undefined*
R _{into PBDDR and the port B setting will be changed.}
4
P74PIN Undefined*
R
3
P73PIN Undefined*
R
2
P72PIN Undefined*
R
1
P71PIN Undefined*
R
0
P70PIN Undefined*
R
Note:* Determined by the pin states of P77 to P70.
8.8.2 Pin Functions
• P77/AN7/DA1
The pin function is switched as shown below according to the combination of the DAE bit in
DACR of the D/A converter and the DAOE1 bit.
DAOE1
0
DAE
0
1
Pin Function
P77 input pin
DA1 input pin
AN7 input pin*
Note:* This pin can always be used as the AN7 input pin.
1
—
DA1 output pin
• P76/AN6/DA0
The pin function is switched as shown below according to the combination of the DAE bit in
DACR of the D/A converter and the DAOE0 bit.
DAOE0
0
DAE
0
1
Pin Function
P76 input pin
DA0 output pin
AN6 input pin*
Note:* This pin can always be used as the AN6 input pin.
1
—
DA0 output pin
Rev. 2.0, 08/02, page 181 of 788