MA101 Datasheet, PDF (13/30 Pages) Megawin Technology Co., Ltd – Low-speed USB Specification version 1.1 compliance

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VBUS
R1
MA101
SDA / SCL
VCC
R2
C1
Figure 5-3 : Circuit diagram
MA101
Datasheet Version 1.02
tR
tF
Figure 5-4 : Bus Rising/Falling waveform diagram
SCL/SDA rising time and falling time with internal pull high resistor table
VBUS
Internal Pull
High Resistor (R1)
Capacitance
(C1)
Rising Time (tR)
(10% to 90%)
R1
5.0 V
R1
None
47p F
1.64 us
4.05 us
Note: This parameter is characterized but not 100% tested.
Falling Time (tF)
(90% to 10%)
13.2 ns
22.1 ns
SCL/SDA rising time and falling time with external pull high resistor table:
VCC
External Pull
High Resistor (R2)
Capacitance
(C1)
Rising Time (tR)
(10% to 90%)
5.0V
4.7K Ohm
4.7K Ohm
None
47p F
0.28 us
0.73 us
3.3 V
4.7K Ohm
4.7K Ohm
None
47p F
0.29 us
0.76 us
Note: This parameter is characterized but not 100% tested.
Falling Time (tF)
(90% to 10%)
13.7 ns
22.1 ns
12.5 ns
20.7 ns
This document information is the intellectual property of Megawin Technology Co., Ltd.
© Megawin Technology Co., Ltd. 2009 All rights reserved.
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