参数资料
型号: MCIMX31CJMN4C
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 400 MHz, MICROPROCESSOR, PBGA473
封装: 19 X 19 MM, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, BGA-473
文件页数: 23/108页
文件大小: 2878K
代理商: MCIMX31CJMN4C
Electrical Characteristics
MCIMX31C/MCIMX31LC Technical Data, Rev. 4.3
Freescale Semiconductor
21
Figure 8 depicts Write 1 Sequence timing, Figure 9 depicts the Read Sequence timing, and Table 20 lists
the timing parameters.
Figure 8. Write 1 Sequence Timing Diagram
Figure 9. Read Sequence Timing Diagram
4.3.5
ATA Electrical Specifications (ATA Bus, Bus Buffers)
This section discusses ATA parameters. For a detailed description, refer to the ATA specification.
The user needs to use level shifters for 3.3 Volt or 5.0 Volt compatibility on the ATA interface.
The use of bus buffers introduces delay on the bus and introduces skew between signal lines. These factors
make it difficult to operate the bus at the highest speed (UDMA-5) when bus buffers are used. If fast
UDMA mode operation is needed, this may not be compatible with bus buffers.
Another area of attention is the slew rate limit imposed by the ATA specification on the ATA bus.
According to this limit, any signal driven on the bus should have a slew rate between 0.4 and 1.2 V/ns with
a 40 pF load. Not many vendors of bus buffers specify slew rate of the outgoing signals.
Table 19. WR0 Sequence Timing Parameters
ID
Parameter
Symbol
Min
Typ
Max
Units
OW5
Write 0 Low Time
tWR0_low
60
100
120
s
OW6
Transmission Time Slot
tSLOT
OW5
117
120
s
Table 20. WR1/RD Timing Parameters
ID
Parameter
Symbol
Min
Typ
Max
Units
OW7
Write 1 / Read Low Time
tLOW1
15
s
OW8
Transmission Time Slot
tSLOT
60
117
120
s
OW9
Release Time
tRELEASE
15
45
s
OW7
OW8
1-Wire bus
(BATT_LINE)
OW7
OW8
OW9
1-Wire bus
(BATT_LINE)
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:
MCIMX31CVMN4D,
MCIMX31LCVMN4D,
MCIMX31CVMN4C,
MCIMX31LCVMN4C
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