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ISL12027AIB27Z Scheda tecnica(PDF) 6 Page - Intersil Corporation |
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ISL12027AIB27Z Scheda tecnica(HTML) 6 Page - Intersil Corporation |
6 / 28 page 6 FN8232.8 August 12, 2010 tSU:STA START Condition Set-up Time SCL rising edge to SDA falling edge. Both crossing 70% of VDD. 600 ns tHD:STA START Condition Hold Time From SDA falling edge crossing 30% of VDD to SCL falling edge crossing 70% of VDD. 600 ns tSU:DAT Input Data Set-up Time From SDA exiting the 30% to 70% of VDD window, to SCL rising edge crossing 30% of VDD. 100 ns tHD:DAT Input Data Hold Time From SCL falling edge crossing 70% of VDD to SDA entering the 30% to 70% of VDD window. 0ns tSU:STO STOP Condition Set-up Time From SCL rising edge crossing 70% of VDD, to SDA rising edge crossing 30% of VDD. 600 ns tHD:STO STOP Condition Hold Time for Read, or Volatile Only Write From SDA rising edge to SCL falling edge. Both crossing 70% of VDD. 600 ns tDH Output Data Hold Time From SCL falling edge crossing 30% of VDD, until SDA enters the 30% to 70% of VDD window. 0ns tR SDA and SCL Rise Time From 30% to 70% of VDD 20 + 0.1xCb 250 ns tF SDA and SCL Fall Time From 70% to 30% of VDD 20 + 0.1xCb 250 ns Cpin SDA, and SCL Pin Capacitance 10 pF tWC Non-Volatile Write Cycle Time 12 20 ms 14 tR SDA and SCL Rise Time From 30% to 70% of VDD 20 + 0.1xCb 250 ns 15 tF SDA and SCL Fall Time From 70% to 30% of VDD 20 + 0.1xCb 250 ns 15 Cb Capacitive Loading of SDA or SCL Total on-chip and off-chip 10 400 pF 15 RPU SDA and SCL Bus Pull-up Resistor Off-chip Maximum is determined by tR and tF. For Cb = 400pF, max is about 2k Ω~2.5kΩ. For Cb = 40pF, max is about 15k Ω~20kΩ 1k Ω 15 NOTES: 7. RESET Inactive (no reset). 8. VIL = VDD x 0.1, VIH = VDD x 0.9, fSCL = 400kHz. 9. VRESET = 2.63V (VDD must be greater than VRESET), VBAT = 0V. 10. Bit BSW = 0 (Standard Mode), ATR = 00h, VBAT ≥1.8V. 11. Specified at +25°C. 12. In order to ensure proper timekeeping, the VDD SR- specification must be followed. 13. Parameter is not 100% tested. 14. tWC is the minimum cycle time to be allowed for any non-volatile Write by the user, it is the time from valid STOP condition at the end of Write sequence of a serial interface Write operation, to the end of the self-timed internal non-volatile write cycle. 15. These are I2C specific parameters and are not directly tested, however they are used during device testing to validate device specification. 16. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. Serial Interface (I2C) Specifications (Continued) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS NOTES ISL12027, ISL12027A |
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