DEMO9S08EL32 Freescale Semiconductor, DEMO9S08EL32 Datasheet - Page 59

• Manufacturer Part Number: DEMO9S08EL32
• Description: BOARD DEMO FOR 9S08 EL MCU
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S08EL32

• Contents: Evaluation Board
• Processor To Be Evaluated: MC9S08EL32
• Data Bus Width: 8 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 12 V
• Silicon Manufacturer: Freescale
• Core Architecture: HCS08
• Core Sub-architecture: HCS08
• Silicon Core Number: MC9S08
• Silicon Family Name: S08EL
• Rohs Compliant: Yes
• For Use With/related Products: MC9S08EL32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.5.11.4
FPROT register defines which FLASH and EEPROM sectors are protected against program and erase
operations.
During the reset sequence, the FPROT register is loaded from the nonvolatile location NVPROT. To
change the protection that will be loaded during the reset sequence, the sector containing NVPROT must
be unprotected and erased, then NVPROT can be reprogrammed.
FPROT bits are readable at any time and writable as long as the size of the protected region is being
increased. Any write to FPROT that attempts to decrease the size of the protected region will be ignored.
Trying to alter data in any protected area will result in a protection violation error and the FPVIOL flag
will be set in the FSTAT register. Mass erase is not possible if any one of the sectors is protected.
Freescale Semiconductor
Reset
FPOP
Field
EPS
FPS
7:6
5:1
0
W
R
EEPROM Protect Select Bits — This 2-bit field determines the protected EEPROM locations that cannot be
erased or programmed. See
FLASH Protect Select Bits — This 5-bit field determines the protected FLASH locations that cannot be erased
or programmed. See
FLASH Protect Open Bit — This bit determines the protected FLASH locations that cannot be erased or
programmed. See
FLASH and EEPROM Protection Register (FPROT and NVPROT)
F
7
EPS
EPS
0x3
0x2
0x1
0x0
Figure 4-8. FLASH and EEPROM Protection Register (FPROT)
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
F
6
Table
Table 4-11. FPROT Register Field Descriptions
Table
4-13.
Table 4-12. EEPROM Block Protection
0x17F8 - 0x17FF
0x17F0 - 0x17FF
0x17E0–0x17FF
4-13.
Address Area
Table
Protected
F
5
N/A
4-12.
F
4
Description
Protected (bytes)
Memory Size
16
32
64
0
FPS
F
3
Number of Sectors
F
2
Protected
0
2
4
8
F
1
Chapter 4 Memory
FPOP
F
0
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