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IMX51 Datasheet(PDF) 102 Page - Freescale Semiconductor, Inc

Part # IMX51
Description  i.MX51 Applications Processors for Consumer and Industrial Products
PDF  184 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

IMX51 Datasheet(HTML) 102 Page - Freescale Semiconductor, Inc

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i.MX51 Applications Processors for Consumer and Industrial Products, Rev. 1
102
Freescale Semiconductor
Preliminary—Subject to Change Without Notice
Electrical Characteristics
3.7.9
1-Wire Timing Parameters
Figure 65 depicts the RPP timing, and Table 73 lists the RPP timing parameters.
Figure 65. Reset and Presence Pulses (RPP) Timing Diagram
Figure 66 depicts Write 0 Sequence timing, and Table 74 lists the timing parameters.
Figure 66. Write 0 Sequence Timing Diagram
15Display RS down time
DISP_CS_DOWN is predefined in REGISTER.
Table 73. RPP Sequence Delay Comparisons Timing Parameters
ID
Parameters
Symbol
Min
Typ
Max
Unit
OW1
Reset Time Low
tRSTL
480
511
—
µs
OW2
Presence Detect High
tPDH
15
—
60
µs
OW3
Presence Detect Low
tPDL
60
—
240
µs
OW4
Reset Time High
tRSTH
480
512
—
µs
Table 74. WR0 Sequence Timing Parameters
ID
Parameter
Symbol
Min
Typ
Max
Unit
OW5
Write 0 Low Time
tWR0_low
60
100
120
µs
OW6
Transmission Time Slot
tSLOT
OW5
117
120
µs
Tdicdcs
T
DI_CLK
ce il
×
()
DISP_CS_DOWN_#
DI_CLK_PERIOD
------------------------------------------------------
=
One-Wire bus
DS2502 Tx
“Presence Pulse”
(BATT_LINE)
1-WIRE Tx
“Reset Pulse”
OW1
OW2
OW3
OW4
OW5
OW6
One-Wire bus
(BATT_LINE)



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