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AD7879ACPZ-500R7 Arkusz danych(PDF) 7 Page - Analog Devices |
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AD7879ACPZ-500R7 Arkusz danych(HTML) 7 Page - Analog Devices |
7 / 36 page AD7879 Rev. 0 | Page 7 of 36 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TOP VIEW (BALL SIDE DOWN) Not to Scale AUX/ VBAT/ GPIO VCC/REF X+ Y+ DOUT DIN X– SCL GND Y– 1 A B C D 23 BALL A1 INDICATOR PENIRQ/ INT/DAV CS Figure 5. AD7879 WLCSP Pin Configuration PIN 1 INDICATOR 1 Y+ 2 NC 3 NC 4 X– 11 NC 12 10 NC 9DOUT AD7879 TOP VIEW (Not to Scale) PENIRQ/INT/DAV NOTES 1. NC = NO CONNECT 2. THE EXPOSED PAD IS NOT CONNECTED INTERNALLY. FOR INCREASED RELIABILITY OF THE SOLDER JOINTS AND MAXIMUM THERMAL CAPABILITY IT IS RECOMMENDED THAT THE PAD BE SOLDERED TO THE GROUND PLANE. Figure 6. AD7879 LFCSP Pin Configuration TOP VIEW (BALL SIDE DOWN) Not to Scale AUX/ VBAT/ GPIO VCC/REF X+ Y+ SDA ADD1 X– SCL GND Y– 1 A B C D 23 BALL A1 INDICATOR PENIRQ/ INT/DAV ADD0 Figure 7. AD7879-1 WLCSP Pin Configuration PIN 1 INDICATOR 1 Y+ 2 NC 3 NC 4 X– 11 NC 12 10 NC 9SDA AD7879-1 TOP VIEW (Not to Scale) PENIRQ/INT/DAV NOTES 1. NC = NO CONNECT 2. THE EXPOSED PAD IS NOT CONNECTED INTERNALLY. FOR INCREASED RELIABILITY OF THE SOLDER JOINTS AND MAXIMUM THERMAL CAPABILITY IT IS RECOMMENDED THAT THE PAD BE SOLDERED TO THE GROUND PLANE. Figure 8. AD7879-1 LFCSP Pin Configuration Table 5. Pin Function Descriptions Pin No. Mnemonic Description WLCSP LFCSP 1A 13 AUX/VBAT/GPIO Pin functionality is programmable to be either an auxiliary input to the ADC, as a battery measurement input to the ADC, or as a general-purpose digital input/output. 1B 12 PENIRQ/INT/DAV Interrupt Output. This pin asserts either when the screen is touched, when new data is available in the registers, or when a measurement exceeds the preprogrammed limits. Active low, internal pull-up resistor of 50 kΩ. 1C 9 DOUT SDA SPI Serial Data Output on the AD7879. Serial Data Input and Output on the AD7879-1. 1D 8 SCL Serial Interface Clock Input. 2A 15 VCC/REF Power Supply Input. It is also the ADC reference. 2B 14 CS ADD0 Chip Select for the Serial Interface on the AD7879. Active low. Address Bit 0 for the AD7879-1. This pin can be tied high or low to determine an address for the AD7879-1. 2C 6 DIN ADD1 SPI Serial Data Input to the AD7879. Address Bit 1 for the AD7879-1. This pin can be tied high or low to determine an address for the AD7879-1. 2D 7 GND Ground. Ground reference point for all circuitry on the AD7879. All analog input signals and any external reference signal should be referred to this voltage. 3A 16 X+ Touch Screen Input Channel. 3B 1 Y+ Touch Screen Input Channel. 3C 4 X− Touch Screen Input Channel. 3D 5 Y− Touch Screen Input Channel. N/A 2, 3, 10, 11 NC No Connect. N/A 17 EP Exposed Pad. |
Podobny numer części - AD7879ACPZ-500R7 |
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Podobny opis - AD7879ACPZ-500R7 |
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