H8SSLASH2218 datasheet(283/750 Pages) RENESAS

283 / 750 page

Section 8 I/O Ports

Rev.6.00 Jun. 03, 2008 Page 235 of 698

REJ09B0074-0600

8.6.4

Port A Pull-Up MOS Control Register (PAPCR)

PAPCR controls the on/off state of the port A input pull-up MOS. PAPCR is valid for port input

and SCI input pins.

Bit

Bit Name Initial Value

R/W

Description

7 to

⎯

Undefined

⎯

Reserved

These bits are undefined and cannot be modified.

PA3PCR

PA2PCR

PA1PCR

PA0PCR*

R/W

When a pin functions as an input port, setting the

corresponding bit to 1 turns on the input pull-up MOS for

that pin.

Note: * Reserved in the H8S/2212 Group. If this bit is read, an undefined value will be read. This bit

cannot be modified.

8.6.5

Port A Open-Drain Control Register (PAODR)

PAODR specifies an output type of the port A. PAODR is valid for port output and SCI output

pins.

Bit

Bit Name Initial Value

R/W

Description

7 to

⎯

Undefined

⎯

Reserved

These bits are undefined and cannot be modified.

PA3ODR

PA2ODR

PA1ODR

PA0ODR*

R/W

Setting a PAODR bit to 1 makes the corresponding port A

pin an NMOS open-drain output pin, while clearing the bit

to 0 makes the pin a CMOS output pin.

Note: * Reserved in the H8S/2212 Group. If this bit is read, an undefined value will be read. This bit

cannot be modified.

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