HD64F3039F18 Datasheet, PDF (468/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 15 ROM
Bit
7
6
5
4
3
2
1
0
FWE SWE ESU PSU EV
PV
E
P
Modes _{Initial value}
1 to 4,
and 6
Read/Write
0
R
0
R
0
R
0
R
0
R
0
R
0
0
R
R
Modes Initial value 1/0
5 and 7 _{Read/Write R}
0
0
0
0
0
R/W R/W R/W R/W R/W
0
0
R/W R/W
Program mode
Designates
transition to
or exit from
program mode
Erase mode
Designates transition
to or exit from erase
mode
Program-verify mode
Designates transition to
or exit from program-verify
mode
Erase-verify mode
Designates transition to
or exit from erase-verify
mode
Program setup
Prepares for a transition to program mode.
Erase setup
Prepares for a transition to erase mode.
Software write enable bit
Enables or disables the flash memory.
Flash write enable bit
Sets hardware protection against flash memory programming/erasing.
Bit 7—Flash Write Enable Bit (FWE): Sets hardware protection against flash memory
programming/erasing. When using this bit, refer to section 15.9, Notes on Flash Memory
Programming/Erasing.
Bit 7
FWE
0
1
Description
When a low level is input to the FWE pin (hardware-protected state)
When a high level is input to the FWE pin
Rev.3.00 Mar. 26, 2007 Page 444 of 682
REJ09B0353-0300