MC9S12DG128B Datasheet

  • MC9S12DG128B

  • Users Guide

  • 3857.74KB

  • Motorola   Motorola

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MC9S12DT128B Device User Guide 鈥?V01.07
A.3.1.3 Sector Erase
Erasing a 512 byte Flash sector or a 4 byte EEPROM sector takes:
1
t
era
鈮?/div>
4000
鈰?/div>
---------------------
f
NVMOP
The setup times can be ignored for this operation.
A.3.1.4 Mass Erase
Erasing a NVM block takes:
1
t
mass
鈮?/div>
20000
鈰?/div>
---------------------
f
NVMOP
The setup times 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.
t
check
鈮?/div>
location
鈰?/div>
t
cyc
+
10
鈰?/div>
t
cyc
Table A-11 NVM Timing Characteristics
Conditions are shown in
Table A-4
unless otherwise noted
Num C
1
2
3
4
5
6
7
8
9
10
Rating
Symbol
f
NVMOSC
f
NVMBUS
f
NVMOP
t
swpgm
t
bwpgm
t
brpgm
t
era
t
mass
t
check
t
check
Min
0.5
1
150
46
2
20.4
2
678.4
2
20
5
100
5
11
6
11
6
Typ
Max
50
1
Unit
MHz
MHz
D External Oscillator Clock
D Bus frequency for Programming or Erase Operations
D Operating Frequency
P Single Word Programming Time
D Flash Burst Programming consecutive word
4
D Flash Burst Programming Time for 32 Words
4
P Sector Erase Time
P Mass Erase Time
D Blank Check Time Flash per block
D Blank Check Time EEPROM per block
200
74.5
3
31
3
1035.5
3
26.7
3
133
3
32778
7
2058
7
kHz
碌s
碌s
碌s
ms
ms
t
cyc
t
cyc
NOTES:
1. Restrictions for oscillator in crystal mode apply!
2. Minimum Programming times are achieved under maximum NVM operating frequency f
NVMOP
and maximum bus frequency
f
bus
.
3. Maximum Erase and Programming times are achieved under particular combinations of f
NVMOP
and bus frequency f
bus
.
Refer to formulae in Sections
A.3.1.1 - A.3.1.5
for guidance.
98

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