MC9S12KG128_10 Datasheet, PDF (585/606 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

A.6.1.3 Sector Erase
Erasing a 1024 byte Flash sector or a 4 byte EEPROM sector takes:
tera ≈ 4000 ⋅ _{f--N-----V----M1------O-----P--}
The setup time can be ignored for this operation.
Appendix A Electrical Characteristics
A.6.1.4 Mass Erase
Erasing a NVM block takes:
tmass ≈ 20000 ⋅ _{f--N-----V----M1------O-----P--}
The setup time can be ignored for this operation.
A.6.1.5 Blank Check
The time it takes to perform a blank check on the Flash or EEPROM is dependant on the location of the
first non-blank word starting at relative address zero. It takes one bus cycle per word to verify plus a setup
of the command.
t_check ≈ location ⋅ tcyc + 10 ⋅ tcyc
Table A-16. NVM Timing Characteristics
Conditions are shown in Table A-4 unless otherwise noted
Num C
Rating
Symbol
Min
Typ
Max
Unit
1 D External Oscillator Clock
f_NVMOSC
0.5
—
50 ¹
MHz
2 D Bus frequency for Programming or Erase Operations f_NVMBUS
1
—
—
MHz
3 D Operating Frequency
4 P Single Word Programming Time
5 D Flash Burst Programming consecutive word ⁴
6 D Flash Burst Programming Time for 64 Words ⁴
7 P Sector Erase Time
8 P Mass Erase Time
9 D Blank Check Time Flash per block
10 D Blank Check Time EEPROM per block
f_NVMOP
150
—
200
kHz
t_swpgm
46 ²
—
74.5 ³
µs
t_bwpgm
20.4 ²
—
31 ³
µs
t_brpgm
1331.2 ²
—
2027.5 ³
µs
t_era
20 ⁵
—
26.7 ³
ms
t_mass
100 ⁵
—
133 ³
ms
t_check
11 ⁶
—
65546 ⁷
t_cyc
t_check
11 ⁶
—
2058⁷
t_cyc
1 _{Restrictions for oscillator in crystal mode apply!}
2 _{Minimum Programming times are achieved under maximum NVM operating frequency fNVMOP and maximum bus frequency}
f_bus.
3 _{Maximum Erase and Programming times are achieved under particular combinations of fNVMOP and bus frequency fbus. Refer}
to formula in Section A.6.1.1, “Single Word Programming” and Section A.6.1.4, “Mass Erase” for guidance.
4 _{Burst Programming operations are not applicable to EEPROM}
5 _{Minimum Erase times are achieved under maximum NVM operating frequency fNVMOP.}
6 _{Minimum time, if first word in the array is not blank}
7 _{Maximum time to complete check on an erased block}
MC9S12KG128 Data Sheet, Rev. 1.16
Freescale Semiconductor
585