D12320VF25V Datasheet, PDF (813/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 17 ROM
Boot Program State Inquiry
The boot program will return indications of its present state and error condition. This inquiry can
be made in the inquiry/selection state or the programming/erasing state.
Command H'4F
• Command, H'4F, (1 byte): Inquiry regarding boot program's state
Response H'5F Size STATUS ERROR SUM
• Response, H'5F, (1 byte): Response to boot program state inquiry
• Size (1 byte): The number of bytes that represents the STATUS and ERROR.
This is fixed to 2.
• STATUS (1 byte): State of the boot program
For details, see table 17.63.
• ERROR (1 byte): Error state
ERROR = 0 indicates normal operation.
ERROR = 1 indicates error has occurred
For details, see table 17.64.
• SUM (1 byte): Checksum
Rev.7.00 Feb. 14, 2007 page 779 of 1108
REJ09B0089-0700