SH7052 datasheet(660/919 Pages) RENESAS

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18.3.13

Port F Control Registers H and L (PFCRH, PFCRL)

Port F control registers H and L (PFCRH, PFCRL) are 16-bit readable/writable registers that select

the functions of the 16 multiplex pins in port F and the function of the CK pin. PFCRH selects the

functions of the pins for the upper 8 bits of port F, and PFCRL selects the functions of the pins for

the lower 8 bits.

PFCRH and PFCRL are initialized to H'0015 and H'5000, respectively, by a power-on reset

(excluding a WDT power-on reset), and in hardware standby mode. They are not initialized in

software standby mode or sleep mode.

Port F Control Register H (PFCRH)

Bit:

CKHIZ

PF15MD

—

PF14MD

—

PF13MD

—

PF12MD

Initial value:

R/W:

R/W

Bit:

—

PF11MD

—

PF10MD

—

PF9MD

—

PF8MD

Initial value:

R/W:

R/W

• Bit 15—CKHIZ Bit: Selects the function of pin CK.

Bit: CKHIZ

Description

CK pin output

(Initial value)

CK pin Hi-Z

• Bit 14—PF15 Mode Bit (PF15MD): Selects the function of pin PF15/BREQ.

Description

Bit 14: PF15MD

Expanded Mode

Single-Chip Mode

General input/output (PF15)

(Initial value)

General input/output (PF15)

(Initial value)

Bus request input (

BREQ)

General input/output (PF15)

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