mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 482

• Manufacturer Part Number: mc9s12vr48
• Description: S12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

64 KByte Flash Module (S12FTMRG64K512V1)
All bits in the FRSV3 register read 0 and are not writable.
17.3.2.15 Flash Reserved4 Register (FRSV4)
This Flash register is reserved for factory testing.
All bits in the FRSV4 register read 0 and are not writable.
17.3.2.16 Flash Option Register (FOPT)
The FOPT register is the Flash option register.
All bits in the FOPT register are readable but are not writable.
During the reset sequence, the FOPT register is loaded from the Flash nonvolatile byte in the Flash
configuration field at global address 0x3_FF0E located in P-Flash memory (see
by reset condition F in
containing the Flash nonvolatile byte during the reset sequence, all bits in the FOPT register will be set.
482
Offset Module Base + 0x000E
Offset Module Base + 0x000F
Offset Module Base + 0x0010
Reset
Reset
Reset
W
W
W
R
R
R
0
0
0
0
1
7
7
7
= Unimplemented or Reserved
= Unimplemented or Reserved
= Unimplemented or Reserved
Figure
0
0
0
0
1
6
6
6
Figure 17-18. Flash Reserved3 Register (FRSV3)
Figure 17-19. Flash Reserved4 Register (FRSV4)
17-20. If a double bit fault is detected while reading the P-Flash phrase
Figure 17-20. Flash Option Register (FOPT)
MC9S12VR Family Reference Manual,
Preliminary - Subject to Change Without Notice
0
0
0
0
1
5
5
5
0
0
0
0
1
4
4
4
NV[7:0]
0
0
0
0
1
3
3
3
Rev. 2.2
0
0
0
0
1
2
2
2
Table
Freescale Semiconductor
0
0
0
0
1
1
1
1
17-3) as indicated
0
0
0
0
1
0
0
0