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AS3953A-BSWF-AU Datasheet(PDF) 7 Page - ams AG |
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AS3953A-BSWF-AU Datasheet(HTML) 7 Page - ams AG |
7 / 42 page www.ams.com Revision 1.0 7 - 42 AS3953 Datasheet - E le c t r i ca l C h a ra c t e r is t i c s 6 Electrical Characteristics All in this specification defined tolerances for external components need to be assured over the whole operation conditions range and also over lifetime. 6.1 Operating Conditions 6.2 DC/AC Characteristics for Digital Inputs and Outputs CMOS Inputs. Valid for input pins /SS, MOSI, SCLK CMOS Outputs. Valid for output pins MISO, IRQ Symbol Parameter Min Typ Max Units Note Ilim Limiter current 30 mA Till this current limiter clamps VLC1-LC2 to 5.0V VVP_SPI SPI power supply 1.65 3.6 V When logic powered from RFID interface 1.8 3.6 V When logic powered from VP_SPI interface TAMB Ambient temperature -40 85 ºC Symbol Parameter Min Typ Max Units Note VIH High level input voltage 0.7 * VP_SPI V VIL Low level input voltage 0.3 * VP_SPI V ILEAK Input leakage current 1 µA Symbol Parameter Min Typ Max Units Note VOH High level output voltage 0.9 * VP_SPI V ISOURCE = 1mA VP_SPI = 3V VOL Low level output voltage 0.1 * VP_SPI V CL Capacitive load 50 pF RO Output Resistance 200 400 Ω RPD Pull-down resistance pad MOSI 10 k Ω Pull-down can be enabled while MISO output is in tristate. The activation is controlled by register setting |
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