HD64F2168 Datasheet, PDF (283/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

8.14 Port E
Port E functions as an 8-bit input/output port and also as an LPC input/output. Port E provides the
following register set.
• Port E data direction register (PEDDR)
• Port E output data register (PEODR)
• Port E input data register (PEPIN)
8.14.1 Port E Data Direction Register (PEDDR)
PEDDR is used to specify the input/output attribute of each pin of port E.
Bit Bit Name Initial Value R/W Description
7
PE7DDR 0
6
PE6DDR 0
5
PE5DDR 0
4
PE4DDR 0
3
PE3DDR 0
W When a given bit of PEDDR is set to 1, the
W ^{corresponding pin will function as an output port, and}
when cleared to 0, it will function as an input port.
W
This register is assigned to the same address as that
W _{of PEPIN. When this address is read, the port E}
W ^{states are returned.}
2
PE2DDR 0
W
1
PE1DDR 0
W
0
PE0DDR 0
W
8.14.2 Port E Output Data Register (PEODR)
PEODR stores output data for the port E pins.
Bit Bit Name Initial Value R/W Description
7
PE7ODR 0
6
PE6ODR 0
R/W The PEODR register stores the output data for the
R/W ^{pins that are used a general output port.}
5
PE5ODR 0
R/W
4
PE4ODR 0
R/W
3
PE3ODR 0
R/W
2
PE2ODR 0
R/W
1
PE1ODR 0
R/W
0
PE0ODR 0
R/W
Rev. 3.00, 03/04, page 243 of 830