r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 900

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Section 21 I/O Ports
Table 21.8 Port E Data Register (PEDR) Read/Write Operations
• PEDRH Bits 5 to 0 and PEDRL Bits 15 to 0
21.4.3
The port E port registers H and L (PEPRH and PEPRL) are 16-bit read-only registers that always
return the states of the pins regardless of the PFC setting. Bits PE21PR to PE0PR correspond to
pins PE21 to PE0, respectively (multiplexed functions omitted here).
• PEPRH
Initial value:
Rev. 1.00 Sep. 21, 2007 Page 874 of 1124
REJ09B0402-0100
PEIOR
0
1
Bit
15 to 6
5
4
3
2
1
0
R/W:
Bit:
Port E Port Registers H and L (PEPRH and PEPRL)
15
R
0
-
Bit Name

PE21PR
PE20PR
PE19PR
PE18PR
PE17PR
PE16PR
Pin Function
General input
Other than
general input
General output
Other than
general output
14
R
0
-
13
R
0
-
Initial
Value
All 0
Pin state R
Pin state R
Pin state R
Pin state R
Pin state R
Pin state R
12
R
0
-
Read
Pin state
Pin state
PEDRH or
PEDRL value
PEDRH or
PEDRL value
11
R
0
-
R/W
R
10
R
0
-
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
The pin state is returned regardless of the PFC setting.
These bits cannot be modified.
R
9
0
-
Write
Can write to PEDRH and PEDRL, but it has no
effect on pin state
Can write to PEDRH and PEDRL, but it has no
effect on pin state
Value written is output from pin
Can write to PEDRH and PEDRL, but it has no
effect on pin state
R
8
0
-
R
7
0
-
R
6
0
-
PE21
PR
R
5
*
PE20
PR
R
4
*
PE19
PR
R
3
*
PE18
PR
R
2
*
PE17
PR
R
1
*
PE16
PR
R
0
*