HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 1270

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 35
35.14.2 Port R Data Register (PRDR)
PRDR is a register that stores data for pins PTR7 to PTR0. Bits PR7DT to PR0DT correspond to
pins PTR7 to PTR0. When the pin function is general output port, if the port is read, the value of
the corresponding PRDR bit is returned directly. When the function is general input port, if the
port is read, the corresponding pin level is read.
Table 35.14 Port R Data Register (PRDR) Read/Write Operations
Note:
Rev. 3.00 Jan. 18, 2008 Page 1208 of 1458
REJ09B0033-0300
Bit
7
6
5
4
3
2
1
0
PRnMD1 PRnMD0 Pin State
0
1
PRCR State
Bit Name
PR7DT
PR6DT
PR5DT
PR4DT
PR3DT
PR2DT
PR1DT
PR0DT
n = 0 to 7
0
1
0
1
I/O Ports
Initial
Value
0
0
0
0
0
0
0
0
Other function PRDR value
Output
Input (Pull-up
MOS on)
Input (Pull-up
MOS off)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read
PRDR value
Pin state
Pin state
Description
Table 35.14 shows the function of PRDR.
Write
Value is written to PRDR, but does not affect
pin state.
Write value is output from pin.
Value is written to PRDR, but does not affect
pin state.
Value is written to PRDR, but does not affect
pin state.