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Appendix A Electrical Characteristics
MC9S12XE-Family Reference Manual Rev. 1.25
1232
Freescale Semiconductor
The standard shipping condition for both the D-Flash and P-Flash memory is erased with security disabled.
However it is recommended that each block or sector is erased before factory programming to ensure that
the full data retention capability is achieved. Data retention time is measured from the last erase operation.
Table A-20. NVM Reliability Characteristics
Conditions are shown in
Table A-4 unless otherwise noted
Num
C
Rating
Symbol
Min
Typ
Max
Unit
P-Flash Arrays
1
C Data retention at an average junction temperature of TJavg =
85
°C(1) after up to 10,000 program/erase cycles
1. TJavg does not exceed 85°C in a typical temperature prole over the lifetime of a consumer, industrial or automotive
application.
tPNVMRET
15
100(2)
2. 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 denes Typical Data Retention, please
refer to Engineering Bulletin EB618
—
Years
2
C Data retention at an average junction temperature of TJavg =
85
°C(3) after less than 100 program/erase cycles
3. TJavg does not exceed 85°C in a typical temperature prole over the lifetime of a consumer, industrial or automotive
application.
tPNVMRET
20
—
Years
3
C P-Flash number of program/erase cycles
(-40
°C ≤ tj ≤ 150°C)
nPFLPE
10K
—
Cycles
D-Flash Array
4
C Data retention at an average junction temperature of TJavg =
85
°C
3 after up to 50,000 program/erase cycles
tDNVMRET
5
—
Years
5
C Data retention at an average junction temperature of TJavg =
85
°C
3 after less than 10,000 program/erase cycles
tDNVMRET
10
—
Years
6
C Data retention at an average junction temperature of TJavg =
85
°C
3 after less than 100 program/erase cycles
tDNVMRET
20
—
Years
7
C D-Flash number of program/erase cycles (-40
°C ≤ tj ≤ 150°C)
nDFLPE
50K
—
Cycles
Emulated EEPROM
8
C Data retention at an average junction temperature of TJavg =
85
°C
1after spec. program/erase cycles
tEENVMRET
—
Years
9
C Data retention at an average junction temperature of TJavg =
85
°C
3 after less than 20% spec.program/erase cycles.
(e.g. after <20,000 cycles / Spec 100,000 cycles)
tEENVMRET
10
—
Years
10
C Data retention at an average junction temperature of TJavg =
85
°C
3 after less than 0.2% spec. program/erase cycles
(e.g. after < 200 cycles / Spec 100,000 cycles)
tEENVMRET
20
—
Years
11
C EEPROM number of program/erase cycles with a ratio of
EEE_NVM to EEE_RAM = 8 (-40
°C ≤ tj ≤ 150°C)
nEEPE
100K(4)
4. This represents the number of writes of updated data words to the EEE_RAM partition. Minimum specication (endurance
and data retention) of the Emulated EEPROM array is based on the minimum specication of the D-Flash array per item 6.
1M(5)
—
Cycles
12
C EEPROM number of program/erase cycles with a ratio of
EEE_NVM to EEE_RAM = 128 (-40
°C ≤ tj ≤ 150°C)
nEEPE
—
Cycles
13
C EEPROM number of program/erase cycles with a ratio of
EEE_NVM to EEE_RAM = 16384(6) (-40
°C ≤ tj ≤ 150°C)
nEEPE
—
Cycles