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)： 47/118頁
文件大?。?/td> 1159K
代理商： MCIMX27
Signal Descriptions
i.MX27 Data Sheet, Advance Information, Rev. 0.1
Freescale Semiconductor
Preliminary—Subject to Change Without Notice
47
3.5.1.2
AC Electrical Characteristics
Figure 2
depicts the load circuit for output pads.
Figure 3
depicts the output pad transition time waveform.
The range of operating conditions appear in
Table 13
for slow general I/O,
Table 14
for fast general I/O,
and
Table 15
for DDR I/O (unless otherwise noted).
Figure 2. Load Circuit for Output Pad
Figure 3. Output Pad Transition Time Waveform
Table 13. AC Electrical Characteristics of Slow General I/O Pads
ID
Parameter
Symbol
Test Condition
Min
Typ
Max
Units
PA1
Output Pad Transition Times (Max High)
tpr
25 pF
50 pF
1.25
1.95
1.9
2.9
3.2
4.75
ns
Output Pad Transition Times (High)
tpr
25 pF
50 pF
1.45
2.6
—
4.8
8.4
ns
Output Pad Transition Times (Standard Drive)
tpr
25 pF
50 pF
2.6
5.1
—
8.5
16.5
ns
Maximum Input Transition Times
1
1
Hysteresis mode is recommended for input with transition time greater than 25 ns.
trm
25
ns
Table 14. AC Electrical Characteristics of Fast General I/O Pads
ID
Parameter
Symbol
Test Condition
Min
Typ
Max
Units
PA1
Output Pad Transition Times (Max High)
tpr
25 pF
50 pF
0.9
1.7
1.2
2.4
2.0
4.0
ns
Output Pad Transition Times (High)
tpr
25 pF
50 pF
1.15
2.3
1.6
3.1
2.7
5.3
ns
Output Pad Transition Times (Normal)
tpr
25 pF
50 pF
1.7
3.4
2.4
4.7
4.0
8.0
ns
Maximum Input Transition Times
1
1
Hysteresis mode is recommended for input with transition time greater than 25 ns.
trm
—
—
—
25
ns
Test Point
From Output
Under Test
CL
CL includes package, probe and jig capacitance
0 V
N
VDD
20%
80%
80%
20%
PA1
PA1
Output (at pad)
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