H8SSLASH2214 datasheet(396/936 Pages) RENESAS

Il numero della parte	H8S/2214

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	936 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

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Section 9 I/O Ports

Rev.4.00 Sep. 18, 2008 Page 336 of 872

REJ09B0189-0400

9.9.4

MOS Input Pull-Up Function

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

pull-up can be used in modes 6 and 7, and can be specified as on or off for individual bits.

With the port input pin function (modes 6 and 7), when a PCDDR bit is cleared to 0, setting the

corresponding PCPCR 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 9.17 summarizes the MOS input pull-up states.

Table 9.17

MOS Input Pull-Up States (Port C)

Pins

Power-On

Reset

Hardware

Standby

Mode

Manual

Reset

Software

Standby

Mode

In Other

Operations

Address output (modes 4 and 5),

port output (modes 6 and 7)

OFF

Port input (modes 6 and 7)

OFF

ON/OFF

Legend:

OFF:

MOS input pull-up is always off.

ON/OFF: On when PCDDR = 0 and PCPCR = 1; otherwise off.

H8S/2214 Scheda tecnica(PDF) 396 Page - Renesas Technology Corp