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ST7575 датащи(PDF) 17 Page - Sitronix Technology Co., Ltd. |
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ST7575 датащи(HTML) 17 Page - Sitronix Technology Co., Ltd. |
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17 / 51 page ![]() ST7575 Ver 1.3 17/51 2007/09/12 Test Pins Pin Name Type Description No. of Pins T0~T8 T Do NOT use. Reserved for testing. Must be floating. 9 T11 T Do NOT use. Reserved for testing. Must be “L”. Connect to VSS1 for pull-low. 1 T12 T Do NOT use. Reserved for testing. Must be “L”. Connect to VSS1 for pull-low. 1 Recommend ITO Resistance Pin Name ITO Resistance T[0:8], VRS, VDX2O Floating VDD1, VDD2, VSS1, VSS2 < 100Ω V0(V0I, V0O, V0S), VG(VGI, VGO, VGS), XV0(XV0I, XV0O, XV0S), VMO < 300Ω A0, RWR, ERD, CSB, D[7:0] *1 < 1KΩ PS[2:0], OSC *2, CP, BR, TMX, TMY, T11, T12 < 5KΩ RESB *3 < 10KΩ Note: 1. If using 3-Line or 4-Line SPI interface with VDD1 less than 2.4V, the SDA signal resistance should be less than 500Ω. 2. If using internal clock, OSC is connect to VDD1 and the limitation of ITO resistance will be “No Limitation”. If using external clock, the ITO resistance of OSC should be kept lower than 300Ω to keep the clock signal quality. 3. To prevent the ESD pulse resetting the internal register, applications should increase the resistance of RESB signal (add a series resistor or increase ITO resistance). The value is different from modules. 4. The option setting to be “H” should connect to VDD1. 5. The option setting to be “L” should connect to VSS1. |
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