Table 6.9 Boot Mode Operation; Table 6.10 Oscillating Frequencies - Renesas H8/3847R Series Hardware Manual

8. Do not change the TEST pin and P24 pin input levels in boot mode.
Table 6.9 Boot Mode Operation
Item
Bit rate
adjustment
Flash memory erase
Transfer of
programming control
program
Transfer of
programming control
program (repeated for
N times)
Execution of
Programming
control program
Table 6.10 Oscillating Frequencies (f
Is Possible
Product Group
H8/38347F-ZTAT
H8/38344F-ZTAT
H8/38447F-ZTAT
H8/38444F-ZTAT
Host Operation
Processing Contents
Continuously transmits data H'00 at
specified bit rate.
Transmits data H'55 when data H'00
is received and no error occurs.
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
OSC
Host Bit Rate
19,200 bps
9,600 bps
4,800 bps
2,400 bps
1,200 bps
LSI Operation
Processing Contents
Branches to boot program at reset-start.
· Measures low-level period of receive data H'00.
· Calculates bit rate and sets it in BRR of SCI3.
· Transmits data H'00 to the host to indicate that the
adjustment has ended.
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.)
Echobacks the 2-byte received data to host.
Echobacks received data to host and also
transfers it to RAM.
Transmits 1-byte data H'AA to host.
Branches to programming control program
transferred to on-chip RAM and starts execution.
) for which Automatic Adjustment of LSI Bit Rate
Oscillating Frequencie
16 MHz
8 to 16 MHz
6 to 16 MHz
2 to 16 MHz
2 to 16 MHz
Rev. 6.00 Aug 04, 2006 page 179 of 680
Section 6 ROM
s (f )
Range of LSI
OSC
REJ09B0145-0600