HD64F3039F18 Datasheet, PDF (469/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 15 ROM
Bit 6—Software Write Enable Bit (SWE)*¹ *²: This bit enables/disables flash memory
programming/erasing. This bit should be set before setting FLMCR bits 5 to 0, and EBR bits 7 to
0. Do not set the ESU, PSU, EV, PV, E, or P bits at the same time.
Bit 6
SWE
0
1
Description
Program/erase disabled
Program/erase enabled
[Setting condition]
When FWE = 1
(Initial value)
Bit 5—Erase Setup Bit (ESU)*¹: Prepares for a transition to erase mode. Do not set the SWE,
PSU, EV, PV, E, or P bit at the same time.
Bit 5
ESU
0
1
Description
Erase setup cleared
Erase setup
[Setting condition]
When FWE = 1, and SWE = 1
(Initial value)
Bit 4—Program Setup Bit (PSU)*¹: Prepares for a transition to program mode. Do not set the
SWE, ESU, EV, PV, E, or P bit at the same time.
Bit 4
PSU
0
1
Description
Program setup cleared
Program setup
[Setting condition]
When FWE = 1, and SWE = 1
(Initial value)
Rev.3.00 Mar. 26, 2007 Page 445 of 682
REJ09B0353-0300