HD64F3670 Datasheet, PDF (314/323 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

Item
7.2.4 Flash Memory
Enable Register (FENR)
7.3 On-Board
Programming Modes
Table 7.1 Setting
Programming Modes
7.3.1 Boot Mode
Table 7.2 Boot Mode
Operation
Page Revisions (See Manual for Details)
Rev.
79 Description amended.
2.0
Bit 7 (FLSHE) in FENR enables or disables the CPU
access to the flash memory control registers,
FLMCR1, FLMCR2, and EBR1.
79 Description amended.
2.0
EIOT_0 → E10T_0
81
Changed.
Host Operation
Processing Contents
Communication Contents
LSI Operation
Processing Contents
Branches to boot program at reset-start.
Continuously transmits data H'00
at specified bit rate.
Transmits data H'55 when data H'00
is received error-free.
H'00, H'00 . . . H'00
H'00
H'55
Boot program initiation
• Measures low-level period of receive data
H'00.
• Calculates bit rate and sets BRR in SCI3.
• Transmits data H'00 to host as adjustment
end indication.
2.0
7.4.1 Program/Program- 83
Verify
Boot program
erase error
H'AA reception
H'FF
H'AA
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.)
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)
Upper bytes, lower bytes
Echoback
Echobacks the 2-byte data
received to host.
H'XX
Echoback
Echobacks received data to host and also
transfers it to RAM.
(repeated for N times)
H'AA reception
H'AA
Transmits data H'AA to host when data H'55
is received.
Branches to programming control program
transferred to on-chip RAM and starts
execution.
Description amended.
2.0
7. For a dummy write to a verify address, write 1-
byte data H'FF to an address whose lower 2 bits
are B'00. Verify data can be read in words or in
longwords from the address to which a dummy
write was performed.
Rev. 2.0, 03/02, page 290 of 298