RX − 8564 LC
8.2. AC electrical characteristics
* Unless otherwise specified, GND = 0 V , VDD = 1.8 V to 5.5 V , Ta = − 40 ° C to +85 ° C
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| Max. |
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SCL clock frequency |
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| fSCL |
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| 400 |
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| kHz | |||
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Start condition |
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| tSU; STA |
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| 0.6 |
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| ∝ s | ||||
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Start condition hold time |
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| tHD; STA |
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| 0.6 |
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| ∝ s | ||||
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Data |
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| tSU; DAT |
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| 100 |
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Data hold time |
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| tHD; DAT |
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| 0 |
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Stop condition |
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| tSU; STO |
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| 0.6 |
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| ∝ s | ||||
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Bus free time between a STOP |
| tBUF |
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| 1.3 |
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and START condition |
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SCL "L" time |
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| tLOW |
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| 1.3 |
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| ∝ s | |||
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SCL "H" time |
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| tHIGH |
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| 0.6 |
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| ∝ s | |||
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SCL and SDA rise time |
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| tr |
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| 0.3 |
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| ∝ s | |||
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SCL and SDA fall time |
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| tf |
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| 0.3 |
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| ∝ s | |||
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Tolerance spike time on bus |
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| tSP |
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| 50 |
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Timing chart |
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Protocol | START |
| BIT 7 | BIT 6 |
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| BIT 0 | ACK | STOP |
| START | |||||||||
CONDITION |
| MSB | (A6) |
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| LSB | (A) | CONDITION | CONDITION | |||||||||||
| (S) |
| (A7) |
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| (R/W) | (P) |
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| tSU ; STA | tLOW | tHIGH | 1 / fSCL |
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| tSU ; STA | |||||||
SCL |
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| (S) |
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| (P) |
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| (S) |
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| tr | tf |
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| tBUF |
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SDA |
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| (A) |
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| tHD ; STA |
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| tSU ; DAT | tHD ; DAT | tSP |
| tSU ; STO |
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| tHD ; STA |
Note : I2C access time between a START and a START condition or between a START and a STOP condition to this device must be less than one second.
Page − 6 |