S912XEQ384J3MALR Freescale Semiconductor, S912XEQ384J3MALR Datasheet - Page 1227

• Manufacturer Part Number: S912XEQ384J3MALR
• Description: S912XEQ Series 16 Bit 50 Mhz 384 KB Flash 24 KB Ram Microcontroller - LQFP-112
• Manufacturer: Freescale Semiconductor

A.3.1.15
The maximum time for partitioning the D-flash (ERPART=16, DFPART=0) is given by :
A.3.1.16
Erase Verify D-Flash for a given number of words N
A.3.1.17
D-Flash programming time is dependent on the number of words being programmed and their location
with respect to a row boundary, because programming across a row boundary requires extra steps. The D-
Flash programming time is specified for different cases (1,2,3,4 words and 4 words across a row boundary)
at a 50MHz bus frequency. The typical programming time can be calculated using the following equation,
whereby N
crossed.
The maximum programming time can be calculated using the following equation
A.3.1.18
Typical D-Flash sector erase times are those expected on a new device, where no margin verify fails occur.
They can be calculated using the following equation.
Maximum D-Fash sector erase times can be calculated using the following equation.
The D-Flash sector erase time on a new device is ~5ms and can extend to 20ms as the flash is cycled.
Freescale Semiconductor
t
t part 21800
t check
t
t eradf 5025
t eradf 20100
t
=
dpgm
dpgm
350
≈
=
=
≈
≈
⋅
≈
w
---------------------------- -
f NVMBUS
⎛
⎝
⎛
⎝
(
(
denotes the number of words; BC=0 if no boundary is crossed and BC=1 if a boundary is
(
Full Partition D-Flash (FCMD=0x0F)
Erase Verify D-Flash Section (FCMD=0x10)
D-Flash Programming (FCMD=0x11)
Erase D-Flash Sector (FCMD=0x12)
840
15
15
1
+
⋅
+
⋅
+
------------------------ -
f
------------------------ -
f NVMOP
⋅
(
NVMOP
(
N W
54 N
------------------------ -
f NVMOP
56 N
1
⋅
1
⋅
)
1
⋅
w
w
---------------------------- -
f NVMBUS
)
)
+
+
+
+
MC9S12XE-Family Reference Manual Rev. 1.24
+
(
400000
(
700
1
16 BC
16 BC
3300
⋅
⋅
⋅
---------------------------- -
f NVMBUS
⋅
⋅
)
---------------------------- -
f NVMBUS
)
)
---------------------------- -
f NVMBUS
)
⋅
1
⋅
------------------ -
f
------------------ -
f
NVMOP
NVMOP
1
1
1
1
W
⎞
⎠
⎞
⎠
is given by .
+
+
+
⎛
⎝
t mass
⎛
⎝
(
(
460
460
+
+
(
(
640 N
840 N
⋅
⋅
W
Appendix A Electrical Characteristics
W
)
)
+
+
(
(
500 BC
500 BC
⋅
⋅
)
)
)
)
⋅
⋅
--------------------- -
f
--------------------- -
f
NVMBUS
NVMBUS
1
1
1227
⎞
⎠
⎞
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