MC9S12DG128 View Datasheet(PDF) - Freescale Semiconductor
Part Name
Description
MFG CO.
'MC9S12DG128' PDF : 142 Pages View PDF
Device User Guide — 9S12DT128DGV2/D V02.16
tera ≈ 4000 ⋅ f--N----V----1M-----O----P--
The setup time can be ignored for this operation.
A.3.1.4 Mass Erase
Erasing a NVM block takes:
tmass ≈ 20000 ⋅ f--N----V----1M-----O----P--
The setup time can be ignored for this operation.
A.3.1.5 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.
tcheck ≈ location ⋅ tcyc + 10 ⋅ tcyc
Table A-11 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
fNVMOSC
0.5
50 1
MHz
2 D Bus frequency for Programming or Erase Operations fNVMBUS
1
MHz
3 D Operating Frequency
fNVMOP
150
200
kHz
4 P Single Word Programming Time
tswpgm
46 2
74.5 3
µs
5 D Flash Row Programming consecutive word 4
tbwpgm
20.4 (2)
31 (3)
µs
6 D Flash Row Programming Time for 32 Words (4)
tbrpgm
678.4 (2)
1035.5 (3) µs
7 P Sector Erase Time
tera
20 5
26.7 (3)
ms
8 P Mass Erase Time
tmass
100 (5)
133 (3)
ms
9 D Blank Check Time Flash per block
tcheck
11 6
32778 7
tcyc
10 D Blank Check Time EEPROM per block
tcheck
11 (6)
1034(7)
tcyc
NOTES:
1. Restrictions for oscillator in crystal mode apply!
2. Minimum Programming times are achieved under maximum NVM operating frequency fNVMOP and maximum bus frequency
fbus.
3. Maximum Erase and Programming times are achieved under particular combinations of fNVMOP and bus frequency fbus.
Refer to formulae in Sections Section A.3.1.1 Single Word Programming- Section A.3.1.4 Mass Erasefor guidance.
4. Row 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
112
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