H8SSLASH2214 datasheet(401/936 Pages) RENESAS

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Section 9 I/O Ports

Rev.4.00 Sep. 18, 2008 Page 341 of 872

REJ09B0189-0400

PD7 (input/output)

PD6 (input/output)

PD5 (input/output)

PD4 (input/output)

PD3 (input/output)

PD2 (input/output)

PD1 (input/output)

PD0 (input/output)

Port D

Figure 9.14 Port D Pin Functions (Mode 7)

9.10.4

MOS Input Pull-Up Function

Port D has an on-chip MOS input pull-up function that can be controlled by software. MOS input

pull-up can be used in mode 7, and can be specified as on or off for individual bits.

With the port input pin function (mode 7), when a PDDDR bit is cleared to 0, setting the

corresponding PDPCR 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 previous state is retained after a manual reset and in software standby mode.

Table 9.19 summarizes the MOS input pull-up states.

Table 9.19

MOS Input Pull-Up States (Port D)

Pins

Power-On

Reset

Hardware

Standby

Mode

Manual

Reset

Software

Standby

Mode

In Other

Operations

Data input/output (modes 4 to 6),

port output (mode 7)

OFF

Port input (mode 7)

OFF

ON/OFF

Legend:

OFF:

MOS input pull-up is always off.

ON/OFF: On when PDDDR = 0 and PDPCR = 1; otherwise off.

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