SH7261 datasheet(1129/1348 Pages) RENESAS

1129 / 1348 page

Section 25 Pin Function Controller (PFC)

Rev. 2.00 Sep. 07, 2007 Page 1097 of 1312

REJ09B0320-0200

25.1.6

Port C Control Registers 1 to 7 (PCCR1 to PCCR7)

PCCR1 to PCCR7 are 16-bit readable/writable registers that select the functions of the

multiplexed port C pins. When IRQ3B to IRQ0B are selected, do not set A input for the same

interrupt.

PCCR2, PCCR5, PCCR6, and PCCR7 are initialized to H'0000 by a power-on reset or by

switching to deep standby mode. PCCR1 is initialized to H'0001 and PCCR3 and PCCR4 are

initialized to the values shown in table 25.9 by a power-on reset or by switching to deep standby

mode. These registers are not initialized either by a manual reset or by switching to sleep mode or

software standby mode.

Table 25.9

Port C Control Register Initial Values

Initial value

Area 0: 32-Bit Mode

Area 0: 16-Bit Mode

Area 0: 8-Bit Mode

PCCR4

H'0001

H'0000

PCCR3

H'1111

H'0111

H'0011

(1)

Port C Control Register 7 (PCCR7)

9876543210

Bit:

Initial value:

R/W:

0000000000000000

R/W

——————————

PC25MD1[1:0]

——

PC24MD1[1:0]

Bit

Bit Name

Initial

Value

R/W

Description

15 to 6

—

All 0

Reserved

These bits are always read as 0. The write value

should always be 0.

5, 4

PC25MD

[1:0]

R/W

PC25 Mode

These bits control the function of the PC25/IRQ3B/

SDA1 pin.

00: PC25 input (port)

01: IRQ3B input (INTC)

10: Setting prohibited

11: SDA1 I/O (IIC3)

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