HD64F3048F16 Datasheet, PDF (629/903 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 18 ROM (H8/3048F-ONE: Single Power Supply, H8/3048B Mask ROM Version)
Normal mode
*1
FWE = 1 FWE = 0
On-board
programming mode
Software programming
disable state
SWE = 1
SWE = 0
*2
Software
programming
enable
state
EV ^{= 1}
EV ^{= 0}
PSU _{= 1}
PSU _{= 0}
*3
Erase setup
state
Erase-verify
mode
*4
Program
setup state
E=1
E=0
Erase mode
P=1
P=0
Program mode
Program-verify
mode
Notes: In order to perform a normal read of flash memory, SWE must be cleared to 0.
Also note that verify-reads can be performed during the programming/erasing process.
1.
: Normal mode
: On-board programming mode
2. Do not make a state transition by setting or clearing multiple bits simultaneously.
3. After a transition from erase mode to the erase setup state, do not enter erase mode without passing
through the software programming enable state.
4. After a transition from program mode to the program setup state, do not enter program mode without
passing through the software programming enable state.
Figure 18.12 State Transitions Caused by FLMCR1 Bit Settings
Rev. 3.00 Sep 27, 2006 page 601 of 872
REJ09B0325-0300