S912XEG128J2VAL
| Model | S912XEG128J2VAL |
| Description | IC,MICROCONTROLLER,16-BIT,CPU12 CPU,CMOS,QFP,112PIN,PLASTIC |
| PDF file | Total 1327 pages (File size: 7M) |
| Chip Manufacturer | ROCHESTER |
Appendix A Electrical Characteristics
A.3.1.4
Read Once (FCMD=0x04)
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
The maximum read once time is given by
1
t
=
(
400
) ⋅
---------------------
-
f
NVMBUS
A.3.1.5
Load Data Field (FCMD=0x05)
The maximum load data field time is given by
1
t
=
(
450
) ⋅
---------------------
-
f
NVMBUS
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
1
1
t bwpgm
=
(
128
+
(
12
⋅
N DLOAD
) ) ⋅
------------------------
+
(
1725
+
(
510
⋅
N DLOAD
) ) ⋅
----------------------------
-
-
f NVMBUS
f NVMOP
The maximum phrase programming time can be calculated using the following equation
1
1
t bwpgm
=
(
130
+
(
14
⋅
N DLOAD
) ) ⋅
------------------------
+
(
2125
+
(
510
⋅
N DLOAD
) ) ⋅
----------------------------
-
-
f NVMBUS
f NVMOP
A.3.1.7
P-Flash Program Once (FCMD=0x07)
The maximum P-Flash Program Once time is given by
1
1
t bwpgm
≈
162
⋅
------------------------
+
2400
⋅
----------------------------
-
-
f NVMBUS
f NVMOP
A.3.1.8
Erase All Blocks (FCMD=0x08)
For S12XEP100, S12XEP768, S12XEQ512 and S12XEQ384 erasing all blocks takes:
1
1
t mass
≈
100100
⋅
------------------------
+
70000
⋅
----------------------------
-
-
f NVMBUS
f
NVMOP
For S12XET256, S12XEA256 and S12XEG128 erasing all blocks takes:
1
1
t mass
≈
100100
⋅
------------------------
+
35000
⋅
----------------------------
-
-
f NVMBUS
f NVMOP
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
1225
