Table 19. Flash command timing specifications (continued)
Symbol
Description
Min.
Typ.
Max.
Unit
Notes
tersall
Erase All Blocks execution time
—
320
1600
ms
tvfykey
Verify Backdoor Access Key execution time
—
35
μs
tpgmpart256k
Program Partition for EEPROM execution time
256 KB FlexNVM
—
175
TBD
ms
tsetram32k
tsetram256k
Set FlexRAM Function execution time:
32 KB EEPROM backup
256 KB EEPROM backup
—
TBD
ms
Byte-write to FlexRAM for EEPROM operation
teewr8bers Byte-write to erased FlexRAM location execution
time
—
100
TBD
μs
teewr8b32k
teewr8b64k
teewr8b128k
teewr8b256k
Byte-write to FlexRAM execution time:
32 KB EEPROM backup
64 KB EEPROM backup
128 KB EEPROM backup
256 KB EEPROM backup
—
TBD
1.5
TBD
2.5
ms
Word-write to FlexRAM for EEPROM operation
teewr16bers Word-write to erased FlexRAM location
execution time
—
100
TBD
μs
teewr16b32k
teewr16b64k
teewr16b128k
teewr16b256k
Word-write to FlexRAM execution time:
32 KB EEPROM backup
64 KB EEPROM backup
128 KB EEPROM backup
256 KB EEPROM backup
—
TBD
1.5
TBD
2.5
ms
Longword-write to FlexRAM for EEPROM operation
teewr32bers Longword-write to erased FlexRAM location
execution time
—
200
TBD
μs
teewr32b32k
teewr32b64k
teewr32b128k
teewr32b256k
Longword-write to FlexRAM execution time:
32 KB EEPROM backup
64 KB EEPROM backup
128 KB EEPROM backup
256 KB EEPROM backup
—
TBD
2.7
TBD
3.7
ms
1. Assumes 25MHz flash clock frequency.
2. Maximum times for erase parameters based on expectations at cycling end-of-life.
3. For byte-writes to an erased FlexRAM location, the aligned word containing the byte must be erased.
Peripheral operating requirements and behaviors
K30 Sub-Family Data Sheet Data Sheet, Rev. 4, 3/2011.
Freescale Semiconductor, Inc.
Preliminary
31