LFEBS12UB Freescale Semiconductor, LFEBS12UB Datasheet - Page 1234

• 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

Appendix A Electrical Characteristics
The number of program/erase cycles for the EEPROM/D-Flash depends upon the partitioning of D-Flash
used for EEPROM Emulation. Defining RAM size allocated for EEE as EEE-RAM and D-Flash partition
allocated to EEE as EEE_NVM, the minimum number of program/erase cycles is specified depending
upon the ratio of EEE_NVM/EEE_RAM. The minimum ratio EEE_NVM/EEE_RAM =8.
1234
1
2
3
4
5
6
# K Cycles
(Log)
1,000,000
T
application.
Typical data retention values are based on intrinsic capability of the technology measured at high temperature and de-rated
to 25°C using the Arrhenius equation. For additional information on how Freescale defines Typical Data Retention, please
refer to Engineering Bulletin EB618
T
application.
This represents the number of writes of updated data words to the EEE_RAM partition. Minimum specification (endurance
and data retention) of the Emulated EEPROM array is based on the minimum specification of the D-Flash array per item 6.
This represents the number of writes of updated data words to the EEE_RAM partition. Typical endurance performance for
the Emulated EEPROM array is based on typical endurance performance and the EEE algorithm implemented on this
product family. Spec. table quotes typical endurance evaluated at 25°C for this product family.
This is equivalent to using a single byte or aligned word in the EEE_RAM with 32K D-Flash allocated for EEEPROM
Javg
Javg
100,000
10,000
1,000
does not exceed 85°C in a typical temperature profile over the lifetime of a consumer, industrial or automotive
does not exceed 85°C in a typical temperature profile over the lifetime of a consumer, industrial or automotive
100
10
10
Figure A-2. Program/Erase Dependency on D-Flash Partitioning
100
MC9S12XE-Family Reference Manual , Rev. 1.23
1000
10,000
100,000
EEE_NVM/EEE_RAM ratio
(Log)
20% Spec Cycles
10 Year Data Retention
Spec Cycles
5 Year Data Retention
Freescale Semiconductor