H8SSLASH2214 datasheet(677/936 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 17 Power-Down Modes

Rev.4.00 Sep. 18, 2008 Page 617 of 872

REJ09B0189-0400

Section 17 Power-Down Modes

17.1

Overview

In addition to the normal program execution state, the H8S/2214 Group has power-down modes in

which operation of the CPU and oscillator is halted and power dissipation is reduced. Low-power

operation can be achieved by individually controlling the CPU, on-chip supporting modules, and

so on.

The H8S/2214 Group operating modes are as follows:

(1) High-speed mode

(2) Medium-speed mode

(3) Sleep mode

(4) Module stop mode

(5) Software standby mode

(6) Hardware standby mode

Of these, (2) to (6) are power-down modes. Sleep mode is CPU mode, medium-speed mode is a

CPU and bus master mode, and module stop mode is an on-chip supporting module mode

(including bus masters other than the CPU). Certain combinations of these modes can be set.

After a reset, the MCU is in high-speed mode.

Table 17.1 shows the internal chip states in each mode, and table 17.2 shows the conditions for

transition to the various modes. Figure 17.1 shows a mode transition diagram.

H8S/2214 Scheda tecnica(PDF) 677 Page - Renesas Technology Corp