HD64F2149YV datasheet(234/1075 Pages) RENESAS

234 / 1075 page

Section 8 I/O Ports

Rev. 3.00 Jan 18, 2006 page 206 of 1044

REJ09B0280-0300

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).

If a port 1 read is performed while P1DDR bits are set to 1, the P1DR values are read directly,

regardless of the actual pin states. If a port 1 read is performed while P1DDR bits are cleared to 0,

the pin states are read.

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

software standby mode.

Port 1 MOS Pull-Up Control Register (P1PCR)

P17PCR

R/W

P16PCR

R/W

P15PCR

R/W

P14PCR

R/W

P13PCR

R/W

P10PCR

R/W

P12PCR

R/W

P11PCR

R/W

Bit

Initial value

R/W

P1PCR is an 8-bit readable/writable register that controls the port 1 built-in MOS input pull-ups

on a bit-by-bit basis.

In modes 2 and 3, the MOS input pull-up is turned on when a P1PCR bit is set to 1 while the

corresponding P1DDR bit is cleared to 0 (input port setting).

P1PCR is initialized to H'00 by a reset and in hardware standby mode. It retains its prior state in

software standby mode.

HD64F2149YV 数据表(PDF) 234 Page - Renesas Technology Corp

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