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MB90340 Datasheet(PDF) 66 Page - Fujitsu Component Limited. |
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MB90340 Datasheet(HTML) 66 Page - Fujitsu Component Limited. |
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66 / 84 page  MB90340 Series 66 (13) I2C Timing (TA = –40°C to +105°C, VCC = 5.0 V ± 10%, VSS = 0.0 V) *1 : R,C : Pull-up resistor and load capacitor of the SCL and SDA lines. *2 : The maximum tHDDAT have only to be met if the device does not stretch the “L” width (tLOW) of the SCL signal. *3 : A Fast-mode I2C-bus device can be used in a Standard-mode I2C-bus system, but the requirement tSUDAT ≥ 250 ns must then be met. *4 : For use at over 100 kHz, set the machine clock to at least 6 MHz. Parameter Symbol Condition Standard-mode Fast-mode*4 Unit Min Max Min Max SCL clock frequency fSCL R = 1.7 kΩ, C = 50 pF*1 0 100 0 400 kHz Hold time (repeated) START condition SDA ↓→SCL↓ tHDSTA 4.0 0.6 µs “L” width of the SCL clock tLOW 4.7 1.3 µs “H” width of the SCL clock tHIGH 4.0 0.6 µs Set-up time for a repeated START condition SCL ↑→SDA↓ tSUSTA 4.7 0.6 µs Data hold time SCL ↓→SDA↓↑ tHDDAT 0 3.45*2 00.9*3 µs Data set-up time SDA ↓↑→SCL↑ tSUDAT 250 100 ns Set-up time for STOP condition SCL ↑→SDA↑ tSUSTO 4.0 0.6 µs Bus free time between a STOP and START condition tBUS 4.7 1.3 µs SDA SCL tLOW tSUDAT tHDSTA tBUS tHDSTA tHDDAT tHIGH tSUSTA tSUSTO |
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