HD64F2149YV datasheet(243/1075 Pages) RENESAS

部件名	HD64F2149YV

功能描述	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

PDF	1075 Pages

Scroll/Zoom	100%

制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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243 / 1075 page

Section 8 I/O Ports

Rev. 3.00 Jan 18, 2006 page 215 of 1044

REJ09B0280-0300

8.3.4

MOS Input Pull-Up Function

Port 2 has a built-in MOS input pull-up function that can be controlled by software. This MOS

input pull-up function can be used in modes 2 and 3, and can be specified as on or off on a bit-by-

bit basis.

When a P2DDR bit is cleared to 0 in mode 2 or 3, setting the corresponding P2PCR 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 reset and in hardware standby mode. The

prior state is retained in software standby mode.

Table 8.5 summarizes the MOS input pull-up states.

Table 8.5

MOS Input Pull-Up States (Port 2)

Mode

Reset

Hardware

Standby Mode

Software

Standby Mode

In Other

Operations

Off

2, 3

Off

On/Off

Legend:

Off:

MOS input pull-up is always off.

On/Off: On when P2DDR = 0 and P2PCR = 1; otherwise off.

HD64F2149YV 数据表(PDF) 243 Page - Renesas Technology Corp