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UM0401 Datasheet(PDF) 3 Page - STMicroelectronics

Part # UM0401
Description  User manual for eight bit port expander
PDF  17 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0401 Datasheet(HTML) 3 Page - STMicroelectronics

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UM0401
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List of figures
Figure 1.
GUI start up screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2.
Port expander board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3.
Voltage regulation from +5 V supply (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 4.
JP10_1 for Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5.
JP55_2 and JP56_2 for I2C_CLK and I2C_SDATA selection. . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 6.
JP2_3 setting for STMPE801 INT pull-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 7.
JP3_3 and JP5_3 setting for STMPE801 SCLK and SDAT . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 8.
JP4_3 setting for STMPE801 I2C Slave address selection . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 9.
JP6_3 and JP7_3 setting for STMPE801 VCC and VIO connections . . . . . . . . . . . . . . . . . . 8
Figure 10.
Screen shot of STMPE801 GUI startup screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 11.
Screen shot of write/read tab in STMPE801 GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 12.
Error screen when the incorrect I2C slave address is chosen . . . . . . . . . . . . . . . . . . . . . . 10
Figure 13.
GPIO Input state screen shot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 14.
GPIO Output state screen shot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 15.
Entering in hibernate mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 16.
Interrupt setting tab screen shot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 17.
Interrupt enabled with indication of current interrupt status in the ISR - screen shot . . . . . 14
Figure 18.
External I2C connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 19.
Demo board footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16



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