HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 802

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 19 ROM
Error protection is released only by a reset and in hardware standby mode.
Figure 19.16 shows the flash memory state transition diagram.
Rev.6.00 Sep. 27, 2007 Page 772 of 1268
REJ09B0220-0600
Legend:
RD: Memory read possible
VF: Verify-read possible
PR: Programming possible
ER: Erasing possible
Normal operating mode
RD VF PR ER
Program mode
occurrence
Erase mode
FLER = 0
Error protection mode
RD VF PR ER
Error
FLER = 1
Figure 19.16 Flash Memory State Transitions
Error occurrence
(software standby)
RD: Memory read not possible
VF: Verify-read not possible
PR: Programming not possible
ER: Erasing not possible
RES = 0 or STBY = 0
Software
standby mode
Software standby
mode release
RES = 0 or
STBY = 0
RES = 0 or
STBY = 0
FLMCR1, FLMCR2 (except FLER
bit), EBR1, EBR2 initialization state
Error protection mode
(software standby)
Reset or hardware standby
RD VF PR ER
(hardware protection)
FLER = 1
RD VF PR ER
FLER = 0
FLMCR1, FLMCR2,
EBR1, EBR2
initialization state