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HD6473228P10V Datasheet, PDF (62/301 Pages) Renesas Technology Corp – Regarding the change of names mentioned in the document, such as Hitachi Electric and Hitachi XX, to Renesas Technology Corp | |||
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87
0
Op
EEPROM
Op
Notation
OP: Operation field
Figure 3-10. Block Data Transfer Instruction/EEPROM Write Operation Code
Notes on EEPMOV Instruction
Note 1
⢠The EEPMOV instruction is a block data transfer instruction. It moves the number of bytes
specified by R4L from the address specified by R5 to the address specified by R6.
R5 â
R5 + R4L â
â R6
â R6 + R4L
⢠When setting R4L and R6, make sure that the final destination address (R6 + R4L) does not
exceed H'FFFF. The value in R6 must not change from H'FFFF to H'0000 during execution of
the instruction.
R5 â
R5 + R4L â
H'FFFF
Not allowed
â R6
â R6 + R4L
Note 2
CPU will malfunction after EEPMOV instruction execution, in the following conditions.
EEPMOV instruction performs block data transfer function.
⢠Condition
When the following conditions are all true:
â The LSI is set to expanded mode (i.e. mode 1 or mode 2).
â The destination address of EEPMOV instruction is external area.
â At least one wait state is inserted to the last write bus cycle to the destination address by
EEPMOV instruction.
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