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STA2065A Datasheet(PDF) 11 Page - STMicroelectronics |
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STA2065A Datasheet(HTML) 11 Page - STMicroelectronics |
11 / 20 page STA2065 System description Doc ID16050 Rev 1 11/20 MHz. The same divisor will be from 2 to 16 when the PLL2 is running at 432 MHz, giving an operating frequency in the range from 216 to 27 MHz. The GPS baseband clock will be derived from the MCLK clock with a divider, internal to the subsytem, by 1, 2,3 or 4, under ARM11 control. RFCLK is the clock received from the RF front-end chip. 2.7.2 Touchscreen controller/ADC STA2065 embeds a 4-wire Touch Screen Controller. The Touch Screen Controller main characteristics are: ● Active Window Clip ● Movements Tracking ● 12-bit SAR ADC resolution when used for Touch screen (with averaging) ● Measurement oversampling from 2 to 8 ● Up to 128 coordinates FIFO, with programmable FIFO threshold ● ADC minimum conversion time of 1 μs ● Capability to support 4 additional analog inputs for auxiliary functions like battery voltage monitoring and accessory control. The ADC of the Touch Screen Controller can be also used for the conversion of external analog signals. In this case the ADC has a 10-bit resolution (its native resolution). 2.7.3 Multisupply IO ring STA2065 has multivoltage IOs capable of supporting 1.8V, 2.5V or 3.3V interfaces. The rings are defined as follows: ● A: All peripherals with exception of what belongs to other rings ● B: LCD ● C: DRAM ● D: FSMC ● E: MMC1 (GPIO40-47, GPIO76-82), CAN0 The default voltage applied to each ring will be at reset time will be: ● A: 1.8V ● B: 1.8V ● C: 1.8V ● D: 1.8V ● E: 3.3V The “Always ON” ring remains separated as in the current STA2065 and supplied by VIOON. |
Número de pieza similar - STA2065A |
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Descripción similar - STA2065A |
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