H838024 datasheet(161/697 Pages) RENESAS

161 / 697 page

Section 5 Power-Down Modes

Rev. 7.00 Mar 10, 2005 page 119 of 652

REJ09B0042-0700

Section 5 Power-Down Modes

5.1

Overview

The LSI has nine modes of operation after a reset. These include eight power-down modes, in

which power dissipation is significantly reduced. Table 5.1 gives a summary of the nine operating

modes.

Table 5.1

Operating Modes

Operating Mode

Description

Active (high-speed) mode

The CPU and all on-chip peripheral functions are operable on

the system clock in high-speed operation

Active (medium-speed) mode

The CPU and all on-chip peripheral functions are operable on

the system clock in low-speed operation

Subactive mode

The CPU and all on-chip peripheral functions are operable on

the subclock in low-speed operation

Sleep (high-speed) mode

The CPU halts. On-chip peripheral functions are operable on

the system clock

Sleep (medium-speed) mode

The CPU halts. On-chip peripheral functions operate at a

frequency of 1/128, 1/64, 1/32, or 1/16 of the system clock

frequency

Subsleep mode

The CPU halts. The time-base function of timer A, timer C,

timer F, timer G, SCI3, AEC, and LCD controller/driver are

operable on the subclock

Watch mode

The CPU halts. The time-base function of timer A, timer F,

timer G, AEC and LCD controller/driver are operable on the

subclock

Standby mode

The CPU and all on-chip peripheral functions halt

Module standby mode

Individual on-chip peripheral functions specified by software

enter standby mode and halt

Of these nine operating modes, all but the active (high-speed) mode are power-down modes. In

this section the two active modes (high-speed and medium speed) will be referred to collectively

as active mode.

Figure 5.1 shows the transitions among these operation modes. Table 5.2 indicates the internal

states in each mode.

H838024 bảng dữ liệu(PDF) 161 Page - Renesas Technology Corp

H838024 bảng dữ liệu(HTML) 161 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

bảng dữ liệu tải về

Link URL