H8SSLASH2214 datasheet(134/936 Pages) RENESAS

部件名	H8S/2214

功能描述	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	936 Pages

Scroll/Zoom	100%

制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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Section 3 MCU Operating Modes

Rev.4.00 Sep. 18, 2008 Page 74 of 872

REJ09B0189-0400

Bit 2—Manual Reset Select (MRESE): Enables or disables the

MRES pin. Table 3.3 shows the

relationship between the

RES and MRES pin values and type of reset. For details of resets, see

section 4.2, Resets.

Bit 2

MRESE

Description

Manual reset is disabled

P74/

MRES pin can be used as P74 I/O pin

(Initial value)

Manual reset is enabled

P74/

MRES pin can be used as MRES input pin

Table 3.3

Relationship between

RES and MRES pin Values and Type of Reset

Pins

RES

MRES

Type of Reset

Power-on reset

Manual reset

Operating state

*: Don’t care

Bit 1—Reserved: Read-only bit, always read as 0.

Bit 0—RAM Enable (RAME): Enables or disables the on-chip RAM. The RAME bit is

initialized when the reset status is released. It is not initialized in software standby mode.

Bit 0

RAME

Description

On-chip RAM is disabled

On-chip RAM is enabled

(Initial value)

Note:

When the DTC is used, the RAME bit should not be cleared to 0.

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