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TCA9535 Datasheet(PDF) 30 Page - Texas Instruments

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Part No. TCA9535
Description  Low-Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output and Configuration Registers
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TCA9535 Datasheet(HTML) 30 Page - Texas Instruments

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VPORR
VCC
Time
VCC_GH
VCC_GW
VCC_MV
30
TCA9535
SCPS201D – AUGUST 2009 – REVISED JULY 2016
www.ti.com
Product Folder Links: TCA9535
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Copyright © 2009–2016, Texas Instruments Incorporated
Glitches in the power supply can also affect the power-on reset performance of this device. The glitch width
(VCC_GW) and height (VCC_GH) are dependent on each other. The bypass capacitance, source impedance, and
device impedance are factors that affect power-on reset performance. Figure 41 and Table 9 provide more
information on how to measure these specifications.
Figure 41. Glitch Width and Glitch Height
VPORR is critical to the power-on reset. VPORR is the voltage level at which the reset condition is released and all
the registers and the I2C-SMBus state machine are initialized to their default states. The value of VPOR differs
based on the VCC being lowered to or from 0. Figure 42 and Table 9 provide more details on this specification.
Figure 42. VPOR


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