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STW8019 数据表(PDF) 17 Page - STMicroelectronics |
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STW8019 数据表(HTML) 17 Page - STMicroelectronics |
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17 / 55 page ![]() STw8009/STw8019 Functional description 17/55 Transition from Active mode to Sleep mode In Sleep mode, DENC is not powered on. When Suspend signal changes from « 0 » to « 1 », the device goes from Active to Sleep mode and an internal Reset signal is generated by the Control Power Unit management to the DENC part. This signal has a 6 pixclk duration (pixclk = 27 MHz). Transition between Standby and Active modes Transitions between these two modes are applied by software configuration through I2C interface. Supply management At power up, supplies must be applied according to the following sequence: VddIO1, VddIO2 (1.8 V) then, Vdd (1.2 V) then, VccA1, VccA2, VccA3, VccA4 (2.8 /3.3 V) and removed according to the following sequence: VccA1, VccA2, VccA3, VccA4 (2.8 /3.3 V) then, Vdd (1.2 V) then, VddIO1, VddIO2 (1.8 V) 4.13 JTAG interface To ease the integration of STw8009/STw8019 in its system application, a JTAG interface is available. |
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