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Notes: 1. If a memory cell does not operate normally and cannot be erased, one H'FF byte is transmitted as an erase error
indication, and the erase operation and subsequent operations are halted.
2. Shading indicates a difference from the H8/3062F-ZTAT R-mask version.
Set pins to boot program mode and execute reset-start
Host transfers data (H'00) continuously at prescribed
bit rate
H8/3062F-ZTAT A-mask version measures low period
of H'00 data transmitted by host
H8/3062F-ZTAT A-mask version calculates bit rate and
sets value in bit rate register
After bit rate adjustment, H8/3062F-ZTAT A-mask
version transmits one H'00 data byte to host to indicate
end of adjustment
Host confirms normal reception of bit rate adjustment
end indication (H'00), and transmits one H'55 data byte
After receiving H'55, H8/3062F-ZTAT A-mask version
transmits one H'AA byte to host
Host transmits number of programming control program
bytes (N), upper byte followed by lower byte
H8/3062F-ZTAT A-mask version transmits received
number of bytes to host as verify data (echo-back)
Host transmits programming control program
sequentially in byte units
H8/3062F-ZTAT A-mask version transmits received
programming control program to host as verify data
(echo-back)
Transfer received programming control program to
on-chip RAM
End of transmission
Check flash memory data, and if data has already been
written, erase all blocks
Confirm that all flash memory data has been erased
Check ID code at beginning of user program transfer
area
Transmit one H'AA byte to host
Execute programming control program transferred to
on-chip RAM
Figure 19.7 Boot Mode Execution Procedure
Start
n = 1
No
n = N?
Yes
(Match)
n + 1 → n
(Mismatch)
Transmit H'FF as
error notification
589
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