HD64F36049 datasheet(68/562 Pages) RENESAS

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Section 2 CPU

Rev. 3.00 Mar. 15, 2006 Page 36 of 526

REJ09B0060-0300

Reset state

Program halt state

Exception-handling state

Program execution state

Reset cleared

SLEEP instruction executed

Reset

occurs

Interrupt

source

Reset

occurs

Interrupt

source

Exception-

handling

complete

Reset occurs

Figure 2.12 State Transitions

2.8

Usage Notes

2.8.1

Notes on Data Access to Empty Areas

The address space of this LSI includes empty areas in addition to the ROM, RAM, and on-chip

I/O registers areas available to the user. When data is transferred from CPU to empty areas, the

transferred data will be lost. This action may also cause the CPU to malfunction. When data is

transferred from an empty area to CPU, the contents of the data cannot be guaranteed.

2.8.2

EEPMOV Instruction

EEPMOV is a block-transfer instruction and transfers the byte size of data indicated by R4 or

R4L, which starts from the address indicated by ER5, to the address indicated by ER6. Set R4 or

R4L and ER6 so that the end address of the destination address (value of ER6

+ R4 or ER6 + R4L)

does not exceed H'FFFFFF (the value of ER6 must not change from H'FFFFFF to H'000000

during execution).

HD64F36049 Datasheet(PDF) 68 Page - Renesas Technology Corp