h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 666
h8s-2161b
Manufacturer Part Number
h8s-2161b
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2161B.pdf
(845 pages)
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Section 23 ROM
Bit
7
6
5, 4
3
2
1
0
Rev. 3.00 Mar 21, 2006 page 612 of 788
REJ09B0300-0300
Bit Name
FWE
SWE
—
EV
PV
E
P
Initial Value
1
0
All 0
0
0
0
0
R/W
R
R/W
R
R/W
R/W
R/W
R/W
Description
Flash Write Enable
Controls programming/erasing of on-chip flash
memory. This bit is always read as 0, and cannot be
modified.
Software Write Enable
When this bit is set to 1, flash memory
programming/erasing is enabled. When this bit is
cleared to 0, the EV, PV, E, and P bits in this register,
the ESU and PSU bits in FLMCR2, and all EBR1 and
EBR2 bits cannot be set to 1. Do not clear these bits
and SWE to 0 simultaneously.
Reserved
These bits are always read as 0 and cannot be
modified.
Erase-Verify
When this bit is set to 1 while SWE = 1, the flash
memory transits to erase-verify mode. When it is
cleared to 0, erase-verify mode is cancelled.
Program-Verify
When this bit is set to 1 while SWE = 1, the flash
memory transits to program-verify mode. When it is
cleared to 0, program-verify mode is cancelled.
Erase
When this bit is set to 1 while SWE = 1 and ESU = 1,
the flash memory transits to erase mode. When it is
cleared to 0, erase mode is cancelled.
Program
When this bit is set to 1 while SWE = 1 and PSU = 1,
the flash memory transits to program mode. When it is
cleared to 0, program mode is cancelled.
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