Datasheet

Section 7 ROM
Page 208 of 982 REJ09B0465-0300 Rev. 3.00
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
(l) Enabling Lock Bit
This command enables the function of lock bits.
Command H'7A
• Command H'7A (1 byte): Enabling lock bit
Response H'06
• Response H'06 (1 byte): Response to an enabling-lock-bit command (ACK code)
(m) Disabling Lock Bit
This command disables the function of lock bits.
Command H'75
• Command H'75 (1 byte): Disabling lock bit
Response H'06
• Response H'06 (1 byte): Response to a disabling-lock-bit command (ACK code)
(n) Boot-Program State Inquiry
In response to a boot-program state inquiry command, the boot program returns its current state
and error information. This inquiry can be made either in the inquiry/selection state or the
programming/erasure state.
Command H'4F
• Command H'4F (1 byte): Boot-program state inquiry
Response H'5F Size STATUS ERROR SUM
• Response H'5F (1 byte): Response to a boot-program state inquiry command
• Size (1 byte): The number of characters in the STATUS and ERROR fields (fixed to 2)
• STATUS (1 byte): State of the boot program