790
Writes are enabled only in the following cases: Writes to bit SWE1 of FLMCR1 enabled when
FWE = 1, to bits ESU1, PSU1, EV1, and PV1 when FWE = 1 and SWE1 = 1, to bit E1 when
FWE = 1, SWE1 = 1 and ESU1 = 1, and to bit P1 when FWE = 1, SWE1 = 1, and PSU1 = 1.
Bit:
7
6
5
4
3
2
1
0
FWE
SWE1
ESU1
PSU1
EV1
PV1
E1
P1
Initial value:
—
*
0
0
0
0
0
0
0
R/W:
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Note:
*
Determined by the state of the FWE pin.
Bit 7—Flash Write Enable Bit (FWE): Sets hardware protection against flash memory
programming/erasing.
Bit 7
FWE
Description
0
When a low level is input to the FWE pin (hardware-protected state)
1
When a high level is input to the FWE pin
Bit 6—Software Write Enable Bit 1 (SWE1): This bit selects write and erase valid/invalid of the
flash memory. Set it when setting bits 5 to 0, bits 7 to 0 of EBR1, and bits 3 to 0 of EBR2.
Bit 6
SWE1
Description
0
Writes disabled
(Initial value)
1
Writes enabled
[Setting condition]
When FWE = 1
Bit 5—Erase Setup Bit 1 (ESU1): Prepares for a transition to erase mode. Set this bit to 1 before
setting the E1 bit in FLMCR1 to 1. Do not set the SWE1, PSU1, EV1, PV1, E1, or P1 bit at the
same time.
Bit 5
ESU1
Description
0
Erase setup cleared
(Initial value)
1
Erase setup
[Setting condition]
When FWE = 1 and SWE1 = 1
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...