BU9883FV-W
Datasheet
● I 2 C BUS input / output circuit
○ Input (SCL0 to 3)
Figure 55. Input pin circuit diagram
○ Input / output (SDA0 to 3)
Figure 56.Input / output pin circuit diagram
○ Input (WPB)
Figure 57. Input pin circuit diagram
● Notes on power ON
At power on, in IC internal circuit and set, V CC rises through unstable low voltage area, and IC inside is not completely reset,
and malfunction may occur. To prevent this, functions of POR circuit and LVCC circuit are equipped. To assure the action,
observe the following conditions at power on.
1. Set SDA0 to 3 = 'H' and SCL0 to 3 ='L' or 'H'
2. Start power source so as to satisfy the recommended conditions of t R , t OFF , and Vbot for operating POR circuit.
V CC
t R
Recommended conditions of t R , t OFF ,Vbot
t R
10ms or below
t OFF
10ms or longer
Vbot
0.3V or below
t OFF
Vbot
100ms or below
10ms or longer
0.2V or below
0
Figure 58. Rise waveform diagram
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TSZ22111 ? 15 ? 001
22/25
TSZ02201-0R2R0G100420-1-2
31.AUG.2012 Rev.001
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