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HT82K74EE Datasheet(PDF) 6 Page - Holtek Semiconductor Inc |
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HT82K74EE Datasheet(HTML) 6 Page - Holtek Semiconductor Inc |
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6 / 56 page  EEPROM A.C. Characteristics Ta=25 °C Symbol Parameter Remark Standard Mode* Unit Min. Max. fSK Clock Frequency ¾¾ 100 kHz tHIGH Clock High Time ¾ 4000 ¾ ns tLOW Clock Low Time ¾ 4700 ¾ ns tr** SDA and SCL Rise Time ¾¾ 1000 ns tf** SDA and SCL Fall Time ¾¾ 300 ns tHD:STA START Condition Hold Time After this period the first clock pulse is generated 4000 ¾ ns tSU:STA START Condition Setup Time Only relevant for repeated START condition 4000 ¾ ns tHD:DAT Data Input Hold Time ¾ 0 ¾ ns tSU:DAT Data Input Setup Time ¾ 200 ¾ ns tSU:STO STOP Condition Setup Time ¾ 4000 ¾ ns tAA Output Valid from Clock ¾¾ 3500 ns tBUF Bus Free Time Time in which the bus must be free be- fore a new transmission can start 4700 ¾ ns tSP Input Filter Time Constant (SDA and SCL Pins) Noise suppression time ¾ 100 ns tWR Write Cycle Time ¾¾ 5ms Note: These parameters are periodically sampled but not 100% tested ²*² The standard mode means VDD=2.2V to 3.3V ²**² For related timing, refer to timing diagrams in the EEPROM Data Memory section HT82K74E/HT82K74EE Rev. 1.00 6 December 15, 2009 |
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