HD64F36037 datasheet(72/592 Pages) RENESAS

72 / 592 page

Section 2 CPU

Rev. 4.00 Mar. 15, 2006 Page 40 of 556

REJ09B0026-0400

2.7

CPU States

There are four CPU states: the reset state, program execution state, program halt state, and

exception-handling state. The program execution state includes active mode and subactive mode.

For the program halt state, there are a sleep mode, standby mode, and sub-sleep mode. These

states are shown in figure 2.11. Figure 2.12 shows the state transitions. For details on program

execution state and program halt state, refer to section 6, Power-Down Modes. For details on

exception processing, refer to section 3, Exception Handling.

CPU state

Reset state

Program

execution state

Program halt state

Exception-

handling state

Active

(high speed) mode

Subactive mode

Sleep mode

Subsleep mode

Power-down

modes

The CPU executes successive program

instructions at high speed,

synchronized by the system clock

The CPU executes

successive program

instructions at reduced

speed, synchronized

by the subclock

A state in which some

or all of the chip

functions are stopped

to conserve power

A transient state in which the CPU changes

the processing flow due to a reset or an interrupt

The CPU is initialized

Standby mode

Figure 2.11 CPU Operation States

HD64F36037 Datasheet(PDF) 72 Page - Renesas Technology Corp

HD64F36037 Datasheet(HTML) 72 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

Datasheet Download

Link URL