MC9S12A256B ETC, MC9S12A256B Datasheet - Page 102

• Manufacturer Part Number: MC9S12A256B
• Description: device made up of standard HCS12 blocks and the HCS12 processor core
• Manufacturer: ETC

MC9S12DP256B Device User Guide — V02.14
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
102
1
2
3
4
5
6
7
8
9
f
bus
.
D External Oscillator Clock
D Bus frequency for Programming or Erase Operations
D Operating Frequency
D Flash Burst Programming consecutive word
D Flash Burst Programming Time for 32 Words
D Blank Check Time Flash per block
D Blank Check Time EEPROM per block
P Single Word Programming Time
P Sector Erase Time
P Mass Erase Time
Rating
Table A-11 NVM Timing Characteristics
Freescale Semiconductor, Inc.
t
For More Information On This Product,
check
t
mass
t
era
Go to: www.freescale.com
location t
4
4000
4
20000
Symbol
---------------------
f
f
f
NVMOSC
f
NVMBUS
NVMOP
cyc
t
t
NVMOP
t
t
t
swpgm
bwpgm
t
brpgm
check
check
---------------------
f
mass
t
era
NVMOP
1
+
1
10 t
678.4
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
1035.5
32778
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