LFEBS12UB Freescale Semiconductor, LFEBS12UB Datasheet - Page 1229

• Manufacturer Part Number: LFEBS12UB
• Description: KIT STUDENT LEARNING S12 DG128
• Manufacturer: Freescale Semiconductor

Specifications of LFEBS12UB

• Architecture: 8/16-bit
• Code Gen Tools Included: Code Warrior
• Silicon Manufacturer: Freescale
• Core Architecture: S12
• Core Sub-architecture: S12
• Silicon Core Number: MC9S12
• Silicon Family Name: S12D
• Kit Contents: HCS12 DG128 Learning Kit
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A.3.1.15
The maximum time for partitioning the D-flash (ERPART=16, DFPART=0) is given by :
A.3.1.16
Erase Verify D-Flash for a given number of words N
A.3.1.17
D-Flash programming time is dependent on the number of words being programmed and their location
with respect to a row boundary, because programming across a row boundary requires extra steps. The
D-Flash programming time is specified for different cases (1,2,3,4 words and 4 words across a row
boundary) at a 50MHz bus frequency. The typical programming time can be calculated using the following
equation, whereby N
boundary is crossed.
The maximum programming time can be calculated using the following equation
A.3.1.18
Typical D-Flash sector erase times are those expected on a new device, where no margin verify fails occur.
They can be calculated using the following equation.
Maximum D-Fash sector erase times can be calculated using the following equation.
The D-Flash sector erase time on a new device is ~5ms and can extend to 20ms as the flash is cycled.
Freescale Semiconductor
t
t part 21800
t check
t
t eradf 5025
t eradf 20100
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dpgm
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f NVMBUS
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Full Partition D-Flash (FCMD=0x0F)
Erase Verify D-Flash Section (FCMD=0x10)
D-Flash Programming (FCMD=0x11)
Erase D-Flash Sector (FCMD=0x12)
840
15
15
1
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N W
54 N
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f NVMOP
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56 N
denotes the number of words; BC=0 if no boundary is crossed and BC=1 if a
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MC9S12XE-Family Reference Manual Rev. 1.23
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400000
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16 BC
16 BC
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NVMOP
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W
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is given by .
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640 N
840 N
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Appendix A Electrical Characteristics
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1229
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