參數(shù)資料
型號: MCIMX27
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: Multimedia Applications Processor(多媒體應(yīng)用處理器)
中文描述: 多媒體應(yīng)用處理器(多媒體應(yīng)用處理器)
文件頁數(shù): 48/118頁
文件大?。?/td> 1159K
代理商: MCIMX27
i.MX27 Data Sheet, Advance Information, Rev. 0.1
48
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
Signal Descriptions
3.5.2
1-Wire Electrical Specifications
Figure 4
depicts the RPP timing, and
Table 16
lists the RPP timing parameters.
Figure 4. Reset and Presence Pulses (RPP) Timing Diagram
Figure 5
depicts Write 0 Sequence timing, and
Table 17
lists the timing parameters.
Figure 5. Write 0 Sequence Timing Diagram
Table 15. AC Electrical Characteristics of DDR I/O Pads
ID
Parameter
Symbol
Test Condition
Min
Typ
Max
Units
PA1
Output Pad Transition Times (DDR Drive)
tpr
25 pF
50 pF
0.5
1.0
0.75
1.45
1.2
2.4
ns
Output Pad Transition Times (Max High)
tpr
25 pF
50 pF
0.67
1.3
1.0
2.0
1.6
3.1
ns
Output Pad Transition Times (High)
tpr
25 pF
35 pF
1.0
1.95
1.5
2.9
2.4
4.7
ns
Output Pad Transition Times (Normal)
tpr
25 pF
50 pF
2.0
3.9
2.9
5.9
4.8
8.4
ns
Maximum Input Transition Times
trm
5
ns
Table 16. RPP Sequence Delay Comparisons Timing Parameters
ID
Parameters
Symbol
Min
Typ
Max
Units
OW1
Reset Time Low
t
RSTL
480
511
μs
OW2
Presence Detect High
t
PDH
15
60
μs
OW3
Presence Detect Low
t
PDL
60
240
μs
OW4
Reset Time High
t
RSTH
480
512
One-Wire bus
(BATT_LINE)
DS2502 Tx
“Presence Pulse”
1-Wire Tx
“Reset Pulse”
OW1
OW2
OW3
OW4
OW5
OW6
One-Wire bus
(BATT_LINE)
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