HD6417618A datasheet(468/646 Pages) RENESAS

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Section 16 Pin Function Controller (PFC)

Rev. 6.00 Jun. 12, 2007 Page 436 of 610

REJ09B0131-0600

16.1.3

Port B IO Register L (PBIORL)

PBIORL is a 16-bit readable/writable register that selects the input/output directions of the port B

pins. Bits PB13IOR to PB0IOR correspond to pins PB13 to PB00 (the pin name abbreviations for

multiplexed functions are omitted). PBIORL is enabled when a port B pin functions as a general

input/output (PB13 to PB00), otherwise, disabled.

Setting a bit in PBIORL to 1 makes the corresponding pin function as an output and clearing a bit

in PBIORL to 0 makes the pin function as an input.

Bits 15 and 14 in PBIORL are reserved. These bits are always read as 0. The write value should

always be 0.

The initial value of PAIBRL is H'0000.

16.1.4

Port B Control Register L1 and L2 (PBCRL1 and PBCRL2)

PBCRL1 and PBCRL2 are 16-bit readable/writable registers that select the pin functions for the

multiplexed port B pins.

• PBCRL1

Bit

Bit Name

Initial

Value

R/W

Description

15 to 11



All 0

Reserved

These bits are always read as 0. The write value should

always be 0.

PB13MD0

R/W

PB13 Mode

Selects the function of pin PB13/

BS.

0: PB13 input/output (port)

BS output (BSC)



Reserved

This bit is always read as 0. The write value should

always be 0.

PB12MD0

R/W

PB12 Mode

Selects the function of pin PB12/

CS3.

0: PB12 input/output (port)

CS3 output (BSC)

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