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RM0319 Datasheet(PDF) 286 Page - STMicroelectronics

Part # RM0319
Description  SPEAr320S architecture and functionality
PDF  368 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

RM0319 Datasheet(HTML) 286 Page - STMicroelectronics

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Touchscreen interface (TOUCHSCREEN)
RM0319
286/368
Doc ID 022640 Rev 3
1.
Write the Ras_select register (address: 0xB300000C) to enable RAS outputs.
2.
Write the touchscreen duration in Touchscreen_duration register (address:
0xB3000014). This value is the number of HCLK cycles. The out port touchscreen_X
(gpio_36) will toggle according to clock cycles.
3.
Write '1' in the touchscreen enable bit (Bit 7) in the control_reg (address:0xB3000010)
to enable the toggling operation.



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