User manual

CY8C27143, CY8C27243
CY8C27443, CY8C27543, CY8C27643
Document Number: 38-12012 Rev. *O Page 40 of 53
Figure 20. Definition for Timing for Fast/Standard Mode on the I2C Bus
T
SUDATI2C
Data Set-up Time 250 –100
[22]
–ns
T
SUSTOI2C
Set-up Time for STOP Condition 4.0 –0.6– μs
T
BUFI2C
Bus Free Time Between a STOP and START Condition 4.7 –1.3– μs
T
SPI2C
Pulse Width of spikes are suppressed by the input filter. – –050ns
Table 42. AC Characteristics of the I
2
C SDA and SCL Pins
Symbol Description
Standard Mode Fast Mode
Unit
Min Max Min Max
SDA
SCL
S
Sr SP
T
BUFI2C
T
SPI2C
T
HDSTAI2C
T
SUSTOI2C
T
SUSTAI2C
T
LOWI2C
T
HIGHI2C
T
HDDATI2C
T
HDSTAI2C
T
SUDATI2C
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