MC9S12A256 Motorola, MC9S12A256 Datasheet - Page 106

• Manufacturer Part Number: MC9S12A256
• Description: MC9S12DT256 Device User Guide V03.03
• Manufacturer: Motorola

MC9S12DT256 Device User Guide V03.03
A.3.1.3 Sector Erase
Erasing a 512 byte Flash sector or a 4 byte EEPROM sector takes:
The setup time can be ignored for this operation.
A.3.1.4 Mass Erase
Erasing a NVM block takes:
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.
Conditions are shown in Table A-4 unless otherwise noted
Num C
NOTES:
1. Restrictions for oscillator in crystal mode apply!
2. Minimum Programming times are achieved under maximum NVM operating frequency f
10
104
1
2
3
4
5
6
7
8
9
f
bus
.
D External Oscillator Clock (MC9S12DT256C< V, M)
D Bus frequency for Programming or Erase Operations
D Operating Frequency
P Single Word Programming Time
D Flash Burst Programming consecutive word
D Flash Burst Programming Time for 32 Words
P Sector Erase Time
P Mass Erase Time
D Blank Check Time Flash per block
D Blank Check Time EEPROM per block
Rating
Table A-11 NVM Timing Characteristics
t
check
t
mass
t
era
location t
4
4000
4
20000
Symbol
---------------------
f
f
f
NVMOSC
NVMBUS
f
NVMOP
cyc
t
t
NVMOP
t
swpgm
bwpgm
t
t
t
brpgm
check
check
---------------------
f
mass
t
era
NVMOP
1
+
1
10 t
1331.2
20.4
100
Min
46
20
11
11
150
0.5
1
cyc
2
5
6
6
5
2
2
NVMOP
Typ
and maximum bus frequency
2027.5
65546
74.5
26.7
2058
133
Max
50
31
200
1
3
3
3
3
7
7
3
Unit
MHz
MHz
kHz
t
t
ms
ms
cyc
cyc
s
s
s