HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 844

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Rev.4.00 Sep. 07, 2007 Page 814 of 1210
REJ09B0245-0400
Notes: Do not apply a constant high level to the FWE pin. Apply a high level to the FWE pin
only when the flash memory is programmed or erased. Also, while a high level is
applied to the FWE pin, the watchdog timer should be activated to prevent
overprogramming or overerasing due to program runaway, etc.
* For further information on FWE application and disconnection, see section 19.21,
Flash Memory Programming and Erasing Precautions.
Figure 19.40 User Program Mode Execution Procedure
Write the FWE assessment program and
transfer program (and the program/erase
control program if necessary) beforehand
Branch to flash memory application
program (flash memory rewriting)
Branch to program/erase control
Transfer program/erase control
Execute program/erase control
MD2, MD1, MD0 = 110, 111
program in RAM area
program to RAM
FWE = high*
Clear FWE*
Reset-start
program