H8SLASH3003 datasheet(295/715 Pages) RENESAS

295 / 715 page

Port C Data Direction Register (PCDDR): PCDDR is an 8-bit write-only register that can select

input or output for each pin in port C.

When bits in PCDDR are set to 1, pins PC7, PC6, PC1, and PC0 become generic output pins and

pins PC5 to PC2 become CS7 to CS4 output pins. When bits in PCDDR are cleared to 0, the

corresponding pins become input pins.

PCDDR is a write-only register. Its value cannot be read. All bits return 1 when read.

PCDDR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode

it retains its previous setting, so if a PCDDR bit is set to 1, the corresponding pin maintains its

output state in software standby mode.

Port C Data Register (PCDR): PCDR is an 8-bit readable/writable register that stores data for

pins PC7 to PC0.

When a bit in PCDDR is set to 1, if port C is read the value of the corresponding PCDR bit is

returned directly. When a bit in PCDDR is cleared to 0, if port C is read the corresponding pin

level is read.

PCDR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode it

retains its previous setting.

Bit

Initial value

Read/Write

PC DDR

Port C data direction 7 to 0

These bits select input or output for port C pins

PC DDR

Bit

Initial value

Read/Write

R/W

Port C data 7 to 0

These bits store data for port C pins

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H8/3003 Datasheet(PDF) 295 Page - Renesas Technology Corp