Section 17 Flash Memory
Rev. 3.00 Sep. 27, 2007 Page 584 of 758
REJ09B0243-0300
17.4.2
Programming/Erasing Interface Registers
The programming/erasing interface registers are as described below. They are all 8-bit registers
that can be accessed in bytes.
(1) Flash Code Control and Status Register (FCCS)
FCCS is configured by bits which request the monitor of the FWE pin state and error
occurrence during programming or erasing flash memory and the download of the on-chip
program.
Bit:
Initial value:
R/W:
7
6
5
4
3
2
1
0
1/0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
(R)/W
FWE
-
-
FLER
-
-
-
SCO
Bit Bit
Name
Initial
Value
R/W Description
7
FWE
1/0
R
Flash Programming Enable
Monitors the level which is input to the FWE pin that
performs hardware protection of the flash memory
programming or erasing. The initial value is 0 or 1
according to the FWE pin state.
0: When the FWE pin goes low (in hardware protection
state)
1: When the FWE pin goes high
6, 5
All
0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
Содержание SH7124 R5F7124
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