Datasheet

Section 7 ROM
Rev.5.00 Nov. 02, 2005 Page 98 of 500
REJ09B0027-0500
Table 7.3 System Clock Frequencies for which Automatic Adjustment of LSI Bit Rate is
Possible
Host Bit Rate System Clock Frequency Range of LSI
19,200 bps 16 to 20 MHz
9,600 bps 8 to 16 MHz
4,800 bps 4 to 16 MHz
2,400 bps 2 to 16 MHz
7.3.2 Programming/Erasing in User Program Mode
On-board programming/erasing of an individual flash memory block can also be performed in user
program mode by branching to a user program/erase control program. The user must set branching
conditions and provide on-board means of supplying programming data. The flash memory must
contain the user program/erase control program or a program that provides the user program/erase
control program from external memory. As the flash memory itself cannot be read during
programming/erasing, transfer the user program/erase control program to on-chip RAM, as in boot
mode. Figure 7.2 shows a sample procedure for programming/erasing in user program mode.
Prepare a user program/erase control program in accordance with the description in section 7.4,
Flash Memory Programming/Erasing.