HD64F2149YV datasheet(304/1075 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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304 / 1075 page

Section 8 I/O Ports

Rev. 3.00 Jan 18, 2006 page 276 of 1044

REJ09B0280-0300

8.15.3

Pin Functions

The port E and port F pins have only one special function.

8.15.4

MOS Input Pull-Up Function

Port E and port F have a built-in MOS input pull-up function that can be controlled by software.

This MOS input pull-up function can be switched as on or off on a bit-by-bit basis.

When a PEDDR or PFDDR bit is cleared to 0, setting the corresponding PEODR or PFODR bit to

1 will turn on the MOS input pull-up for that pin.

The MOS input pull-up function is off after a reset and in hardware standby mode. The prior state

is retained when in software standby mode.

Table 8.30 is a summary of the MOS input pull-up states.

Table 8.30

MOS Input Pull-Up States (Port E and port F)

Mode

Reset

Hardware

Standby Mode

Software

Standby Mode

Other

Operations

1 to 3

Off

On/Off

Legend:

Off:

MOS input pull-up is always off.

On/Off: On when PEDDR = 0 and PEODR = 1 (PFDDR = 0 and PFODR = 1); otherwise off.

HD64F2149YV 数据表(PDF) 304 Page - Renesas Technology Corp