SH7080_09 Datasheet, PDF (1267/1622 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family

Section 22 I/O Ports
Table 22.10 Port E Data Register (PEDR) Read/Write Operations
• PEDRH Bits 5 to 0 and PEDRL Bits 15 to 0
PEIOR Pin Function Read
Write
0
General input Pin state
Can write to PEDRH and PEDRL, but it has no
effect on pin state
Other than
general input
Pin state
Can write to PEDRH and PEDRL, but it has no
effect on pin state
1
General output PEDRH or
Value written is output from pin
PEDRL value
Other than
PEDRH or
Can write to PEDRH and PEDRL, but it has no
general output PEDRL value effect on pin state
22.5.3 Port E Port Registers H and L (PEPRH and PEPRL)
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 PE15PR to PE12PR, PE10PR,
PE8PR to PE6PR, and PE4PR to PE0PR correspond to pins PE15 to PE12, PE10, PE8 to PE6, and
PE4 to PE0, respectively (multiplexed functions omitted here) in the SH7083. Bits PE15PR to
PE0PR correspond to pins PE15 to PE0 (multiplexed functions omitted here) in the SH7084 and
SH7085. Bits PE21PR to PE0PR correspond to pins PE21 to PE0, respectively (multiplexed
functions omitted here) in the SH7086.
• PEPRH (SH7083, SH7084, SH7085)
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Initial
Bit
Bit Name Value R/W Description
15 to 0 ⎯
All 0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
Rev. 4.00 Dec. 15, 2009 Page 1207 of 1558
REJ09B0181-0400