参数资料
型号: PC87393F-VJG
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 外设及接口
英文描述: 100-Pin LPC SuperI/O Devices for Portable Applications
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封装: TQFP-100
文件页数: 45/148页
文件大小: 1733K
代理商: PC87393F-VJG
9.0 Device Characteristics (Continued)
139
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9.4
AC ELECTRICAL CHARACTERISTICS
9.4.1
AC Test Conditions
Figure 32. AC Test Conditions, TA =0 °Cto70 °C, VDD = 3.3 V ±10%
Notes:
1. CL = 100 pF for all output pins (except OPCI);
CL = 50 pF for OPCI output pins;
These values include both jig and oscilloscope capacitance.
2. S1 = Open for push-pull output pins.
S1 = VDD for high impedance to active low and active low to high impedance measurements.
S1 = GND for high impedance to active high and active high to high impedance measurements.
RL = 1.0K for P interface pins.
3. For the FDC open-drive interface pins, S1 = VDD and RL = 150.
9.4.2
Clock Timing
.
Symbol
Parameter
48 MHz
Min
Max
Unit
tCH
Clock High Pulse Width1
1. Not tested. Guaranteed by design.
8.4
ns
tCL
Clock Low Pulse Width1
8.4
ns
tCP
Clock Period 12
2. For the 14.31818 MHz clock, required tolerance is 200
ppm (max).
20
21.5
ns
Device
Under
Test
0.1
f
Input
Output
RL
CL
S1
Load Circuit (Notes 1, 2, 3)
AC Testing Input, Output Waveform
VDD
2.4
0.4
2.0
0.8
Test Points
2.0
0.8
CLKIN
tCL
tCP
tCH
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