HD6432351 datasheet(364/1025 Pages) RENESAS

364 / 1025 page

Section 9 I/O Ports

Rev. 3.00 Sep 15, 2006 page 330 of 988

REJ09B0330-0300

Port 1 Data Direction Register (P1DDR)

P17DDR

P16DDR

P15DDR

P14DDR

P13DDR

P10DDR

P12DDR

P11DDR

Bit

Initial value

R/W

P1DDR is an 8-bit write-only register, the individual bits of which specify input or output for the

pins of port 1. P1DDR cannot be read; if it is, an undefined value will be read.

Setting a P1DDR bit to 1 makes the corresponding port 1 pin an output pin, while clearing the bit

to 0 makes the pin an input pin.

P1DDR is initialized to H'00 by a power-on reset, and in hardware standby mode. It retains its

prior state after a manual reset, and in software standby mode. As the PPG, TPU, and DMAC are

initialized by a manual reset, the pin states are determined by the P1DDR and P1DR

specifications.

Port 1 Data Register (P1DR)

P17DR

R/W

P16DR

R/W

P15DR

R/W

P14DR

R/W

P13DR

R/W

P10DR

R/W

P12DR

R/W

P11DR

R/W

Bit

Initial value

R/W

P1DR is an 8-bit readable/writable register that stores output data for the port 1 pins (P17 to P10).

P1DR is initialized to H'00 by a power-on reset, and in hardware standby mode. It retains its prior

state after a manual reset, and in software standby mode.

HD6432351 Datasheet(PDF) 364 Page - Renesas Technology Corp

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