H8SLASH3003 datasheet(269/715 Pages) RENESAS

269 / 715 page

Port 6 Data Direction Register (P6DDR): P6DDR is an 8-bit write-only register that can select

input or output for each pin in port 6.

A pin in port 6 becomes an output pin if the corresponding P6DDR bit is set to 1, and an input pin

if this bit is cleared to 0. Bits 7 to 3 are reserved.

P6DDR is a write-only register. Its value cannot be read. All bits return 1 when read.

P6DDR is initialized to H'80 by a reset and in hardware standby mode. In software standby mode

it retains its previous setting, so if a P6DDR bit is set to 1, the corresponding pin maintains its

output state in software standby mode.

Port 6 Data Register (P6DR): P6DR is an 8-bit readable/writable register that stores data for pins

P62 to P60.

When a bit in P6DDR is set to 1, if port 6 is read the value of the corresponding P6DR bit is

returned directly. When a bit in P6DDR is cleared to 0, if port 6 is read the corresponding pin level

is read. In this case bit 7 reads 1 and bits 6 to 3 have undetermined values. Bits 7 to 3 are reserved.

Bits 6 to 3 can be written and read, but they cannot be used for port input or output.

Bit 7 cannot be modified and always reads 1.

P6DR is initialized to H'80 by a reset and in hardware standby mode. In software standby mode it

retains its previous setting.

Bit

Initial value

Read/Write

—

P6 DDR

Reserved bits

Port 6 data direction 2 to 0

These bits select input or

output for port 6 pins

Bit

Initial value

Read/Write

—

R/W

Reserved bits

Port 6 data 2 to 0

These bits store data

for port 6 pins

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H8/3003 Datasheet(PDF) 269 Page - Renesas Technology Corp