h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 661

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Figure 21.14 shows the flash memory state transition diagram.
Legend:
RD: Memory read possible
VF: Verify-read possible
PR: Programming possible
ER: Erasing possible
Notes: 1. When an error occurs other than due to a SLEEP instruction, or when a SLEEP instruction is
Section 21 ROM
RD VF PR ER FLER = 0
2. When an error occurs due to a SLEEP instruction (except subactive mode)
3. Except sleep mode
4. VF in subactive mode
Program mode
occurrence *
Erase mode
RD VF *
executed for a transition to subactive mode
Error protection mode
Error
4
PR ER FLER = 1
1
(Mask ROM Version, H8S/2138 F-ZTAT, H8S/2134 F-ZTAT, and H8S/2132 F-ZTAT)
Figure 21.14 Flash Memory State Transitions
Error occurrence *
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,
sleep, subsleep, and
watch mode
Software standby,
sleep, subsleep, and
watch mode release
2
RES = 0 or
STBY = 0
Rev. 4.00 Jun 06, 2006 page 607 of 1004
sleep, subsleep, and watch )
RES = 0 or
mode (software standby,
RD VF PR ER FLER = 1
STBY = 0
Error protection
Reset or hardware standby
RD VF PR ER FLER = 0
FLMCR1, FLMCR2 (except
FLER bit), EBR1, EBR2
initialization state *
(hardware protection)
REJ09B0301-0400
FLMCR1,
FLMCR2,
EBR1, EBR2
initialization
state
3