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DS1077Z-125 Datasheet(PDF) 16 Page - Dallas Semiconductor |
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DS1077Z-125 Datasheet(HTML) 16 Page - Dallas Semiconductor |
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16 / 21 page  DS1077 16 of 21 AC ELECTRICAL CHARACTERISTICS: 2-WIRE INTERFACE (-40 °C to +85°C; VCC= 5V±5%) PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES Fast Mode 400 SCL Clock Frequency f SCL Standard Mode 100 kHz Fast Mode 1.3 Bus Free Time Between a STOP and START Condition t BUF Standard Mode 4.7 µs Fast Mode 0.6 Hold Time (Repeated) START Condition t HD :STA Standard Mode 4.0 µs 6 Fast Mode 1.3 LOW Period of SCL t LOW Standard Mode 4.7 µs Fast Mode 0.6 HIGH Period of SCL t HIGH Standard Mode 4.0 µs Fast Mode 0.6 Set-Up Time for a Repeated START t SU :STA Standard Mode 4.7 µs Fast Mode 0 Data Hold Time t HD :DAT Standard Mode 0 0.9 µs 7,8 Fast Mode 100 Data Set-Up Time t SU :DAT Standard Mode 250 ns Fast Mode 300 Rise Time of Both SDA and SCL Signals t R Standard Mode 20 + 0.1 C B 1000 ns 9 Fast Mode Fall Time of Both SDA and SCL Signals t F Standard Mode 20 + 0.1 C B 300 ns 9 Fast Mode 0.6 Set-Up Time For STOP t SU :STO Standard Mode 4.0 µs Capacitive Load for Each Bus Line C B 400 pF 9 Input Capacitance C I 5pF NONVOLATILE MEMORY CHARACTERISTICS PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES Writes +85°C 10,000 NOTES: 1) All voltages are referenced to ground. 2) 8.13kHz is obtained from a -66MHz standard part. 3) PDN is a power-down signal applied to either CTRL0 or CTRL1 pins as appropriate. 4) Output voltage swings may be impaired at high frequencies combined with high output loading. 5) After this period, the first clock pulse is generated. 6) A device must internally provide a hold time of at least 300ns for the SDA signal (referred to the V IH MIN of the SCL signal) in order to bridge the undefined region of the falling edge of SCL. 7) The maximum t HD :DAT has only to be met if the device does not stretch the LOW period (tLOW) of the SCL signal. |
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