HD6433682 ETC, HD6433682 Datasheet - Page 125
HD6433682
Manufacturer Part Number
HD6433682
Description
Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
Manufacturer
ETC
Datasheet
1.HD6433682.pdf
(504 pages)
Available stocks
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Quantity
Price
Part Number:
HD6433682A45HV
Manufacturer:
RENESAS/瑞萨
Quantity:
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Part Number:
HD6433682C74HV
Manufacturer:
HITACHI/日立
Quantity:
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Table 7.2
Transmits data H'55 when data H'00
Transmits number of bytes (N) of
programming control program to be
transferred as 2-byte data
(low-order byte following high-order
byte)
Transmits 1-byte of programming
control program (repeated for N times)
Continuously transmits data H'00
H'AA reception
H'AA reception
is received error-free.
at specified bit rate.
Boot Mode Operation
Processing Contents
Host Operation
Boot program
erase error
Communication Contents
Upper bytes, lower bytes
H'00, H'00 . . . H'00
Echoback
Echoback
H'XX
H'AA
H'00
H'55
H'AA
H'FF
Transmits data H'AA to host.
Echobacks the 2-byte data
received to host.
Echobacks received data to host and also
transfers it to RAM.
(repeated for N times)
• Measures low-level period of receive data
• Calculates bit rate and sets BRR in SCI3.
• Transmits data H'00 to host as adjustment
Checks flash memory data, erases all flash
memory blocks in case of written data
existing, and transmits data H'AA to host.
(If erase could not be done, transmits data
H'FF to host and aborts operation.)
Branches to boot program at reset-start.
Branches to programming control program
transferred to on-chip RAM and starts
execution.
H'00.
end indication.
H'55 reception.
Rev.3.00, 05/03, page 95 of 472
Boot program initiation
Processing Contents
LSI Operation
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