H8SSLASH2218 datasheet(623/750 Pages) RENESAS

623 / 750 page

Section 17 Flash Memory (F-ZTAT Version)

Rev.6.00 Jun. 03, 2008 Page 575 of 698

REJ09B0074-0600

Item

Host Operation

Operation of this LSI

Transfer of programming

control program and sum

value

Transmits programming control

program in N-byte divisions.

Transfers received data to on-

chip RAM

Transmits sum value (two's

complement of sum total of

programming control program

(1 byte))

Calculates sum total of

received sum value and 1 byte

units of programming control

program transferred to on-chip

RAM

If sum is 0, transmits H'AA to

host

If sum is not 0, transmits H'FF

to host halts operation

Memory erase

Starts total erase of flash

memory

Transmits total erase status

command (H'3A)

Transmits H'11 to host if total

erase processing is being

executed when total erase

status command is received

Transmits H'06 to host if total

erase of all blocks has been

completed when total erase

status command is received

Retransmits total erase status

command (H'3A) when H'11 is

received

If erase cannot be performed

when total erase status

command is received,

transmits H'EE to host and

halts operation

Execution of programming

control program

Branches to programming

control program transferred to

on-chip RAM and starts

execution.

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