7.4 Mos Input Pull-Up Function - Renesas H8S/2633 Series Hardware Manual

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10B.7.4 MOS Input Pull-Up Function

Port A has a built-in MOS input pull-up function that can be controlled by software. MOS input

pull-up can be specified as on or off on an individual bit basis.

In modes 4 to 6, if a pin is in the input state in accordance with the settings in PFCR, in the SCI's

SCMR, SMR, and SCR, and in DDR, setting the corresponding PAPCR bit to 1 turns on the MOS

input pull-up for that pin.

In mode 7, if a pin is in the input state in accordance with the settings in the SCI's SCMR, SMR,

and SCR, and in DDR, setting the corresponding PAPCR bit to 1 turns on the MOS input pull-up

for that pin.

The MOS input pull-up function is in the off state after a power-on reset, and in hardware standby

mode. The prior state is retained by a manual reset or in software standby mode.

Table 10B-11 summarizes the MOS input pull-up states.

Table 10B-11 MOS Input Pull-Up States (Port A)

Address output or

Other than above

: MOS input pull-up is always off.

ON/OFF : On when PADDR = 0 and PAPCR = 1; otherwise off.

Standby Mode

Standby Mode