K20P144M120SF3 Datasheet, PDF (36/80 Pages) Freescale Semiconductor, Inc – K20 Sub-Family Data Sheet

Peripheral operating requirements and behaviors
Table 22. NVM reliability specifications (continued)
Symbol Description
Min.
FlexRAM as EEPROM
t_nvmretee100 Data retention up to 100% of write endurance
5
t_nvmretee10 Data retention up to 10% of write endurance
10
t_nvmretee1 Data retention up to 1% of write endurance
15
Write endurance
n_nvmwree16
n_nvmwree128
n_nvmwree512
n_nvmwree4k
n_nvmwree32k
• EEPROM backup to FlexRAM ratio = 16
• EEPROM backup to FlexRAM ratio = 128
• EEPROM backup to FlexRAM ratio = 512
• EEPROM backup to FlexRAM ratio = 4096
• EEPROM backup to FlexRAM ratio =
32,768
TBD
TBD
TBD
TBD
TBD
Typ.¹
50
100
100
TBD
TBD
TBD
TBD
TBD
Max.
—
—
—
—
—
—
—
—
Unit
years
years
years
writes
writes
writes
writes
writes
Notes
2
2
2
4
1. Typical data retention values are based on measured response accelerated at high temperature and derated to a constant
25°C profile. Engineering Bulletin EB618 does not apply to this technology.
2. Data retention is based on T_javg = 55°C (temperature profile over the lifetime of the application).
3. Cycling endurance represents number of program/erase cycles at -40°C ≤ T_j ≤ 125°C.
4. Write endurance represents the number of writes to each FlexRAM location at -40°C ≤Tj ≤ 125°C influenced by the cycling
endurance of the FlexNVM (same value as data flash) and the allocated EEPROM backup per subsystem. Minimum and
typical values assume all byte-writes to FlexRAM.
6.4.1.5 Write endurance to FlexRAM for EEPROM
TBD
6.4.2 EzPort Switching Specifications
Table 23. EzPort switching specifications
Num
EP1
EP1a
Description
Operating voltage
EZP_CK frequency of operation (all commands except
READ)
EZP_CK frequency of operation (READ command)
Min.
1.71
—
—
EP2
EZP_CS negation to next EZP_CS assertion
EP3
EZP_CS input valid to EZP_CK high (setup)
EP4
EZP_CK high to EZP_CS input invalid (hold)
EP5
EZP_D input valid to EZP_CK high (setup)
EP6
EZP_CK high to EZP_D input invalid (hold)
EP7
EZP_CK low to EZP_Q output valid
2 x t_{EZP_CK}
5
5
2
5
—
Table continues on the next page...
Max.
3.6
f_SYS/2
f_SYS/8
—
—
—
—
—
16
Unit
V
MHz
MHz
ns
ns
ns
ns
ns
ns
K20 Sub-Family Data Sheet Data Sheet, Rev. 3, 2/2012.
36
Preliminary
Freescale Semiconductor, Inc.