R01UH0092EJ0110 Rev.1.10
Page 668 of 807
Jul 31, 2012
M16C/64C Group
30. Flash Memory
30.4.1
Optional Function Select Address 1 (OFS1)
ROMCR (ROM code protect disable bit) (b2)
ROMCP1 (ROM code protect bit) (b3)
These bits are used to disable the flash memory from being read or rewritten in parallel I/O mode.
Table 30.5
ROM Code Protect
Bit Setting
ROM Code Protect
ROMCR bit
ROMCP1 bit
0
0
Disabled
0
1
1
0
Enabled
1
1
Disabled
Optional Function Select Address 1
b7
1
1
b6 b5 b4
b1
b2
b3
Symbol
OFS1
Address
FFFFFh
Bit Symbol
Bit Name
b0
Function
WDTON
Watchdog timer start select bit
0 : Watchdog timer starts automatically
after reset
1 : Watchdog timer is stopped after reset
—
(b1)
Reserved bit
Set to 1.
CSPROINI
After-reset count source
protection mode select bit
0 : Count source protection mode
enabled after reset
1 : Count source protection mode
disabled after reset
ROMCR
ROM code protect cancel bit
0 : ROM code protection cancelled
1 : ROMCP1 bit enabled
ROMCP1
ROM code protect bit
0 : ROM code protection enabled
1 : ROM code protection disabled
—
(b4)
Reserved bit
Set to 1.
VDSEL1
Vdet0 select bit 1
0 : Vdet0_2
1 : Vdet0_0
LVDAS
Voltage detector 0 start bit
0 : Voltage monitor 0 reset enabled
after hardware reset
1 : Voltage monitor 0 reset disabled
after hardware reset
Содержание M16C Series
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