Appendix A Electrical Characteristics
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
1225
A.3.1.4
Read Once (FCMD=0x04)
The maximum read once time is given by
A.3.1.5
Load Data Field (FCMD=0x05)
The maximum load data field time is given by
A.3.1.6
Program P-Flash (FCMD=0x06)
The programming time for a single phrase of four P-Flash words + associated eight ECC bits is dependant
on the bus frequency as a well as on the frequency f
NVMOP
and can be calculated according to the
following formulas, whereby N
DLOAD
is the number of extra blocks being programmed by the Load Data
Field command (DLOAD), i.e. programming 2,3,4 blocks using DLOAD, N
DLOAD
=1,2,3 respectively.
The typical phrase programming time can be calculated using the following equation
The maximum phrase programming time can be calculated using the following equation
A.3.1.7
P-Flash Program Once (FCMD=0x07)
The maximum P-Flash Program Once time is given by
A.3.1.8
Erase All Blocks (FCMD=0x08)
For S12XEP100, S12XEP768, S12XEQ512 and S12XEQ384 erasing all blocks takes:
For S12XET256, S12XEA256 and S12XEG128 erasing all blocks takes:
t
400
(
)
1
f
NVMBUS
----------------------
⋅
=
t
450
(
)
1
f
NVMBUS
----------------------
⋅
=
t
bwpgm
128
12 N
DLOAD
⋅
(
)
+
(
)
1
f
NVMOP
-------------------------
1725
510 N
DLOAD
⋅
(
)
+
(
)
1
f
NVMBUS
-----------------------------
⋅
+
⋅
=
t
bwpgm
130
14 N
DLOAD
⋅
(
)
+
(
)
1
f
NVMOP
-------------------------
2125
510 N
DLOAD
⋅
(
)
+
(
)
1
f
NVMBUS
-----------------------------
⋅
+
⋅
=
t
bwpgm
162
1
f
NVMOP
-------------------------
2400
1
f
NVMBUS
-----------------------------
⋅
+
⋅
≈
t
mass
100100
1
f
NVMOP
-------------------------
70000
1
f
NVMBUS
-----------------------------
⋅
+
⋅
≈
t
mass
100100
1
f
NVMOP
-------------------------
35000
1
f
NVMBUS
-----------------------------
⋅
+
⋅
≈
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages