CRX14_10 Datasheet, PDF (38/47 Pages) STMicroelectronics – ISO14443 type-B contactless coupler chip with anti-collision, CRC management and anti-clone function

DC and AC parameters
CRX14
Table 12. I²C AC characteristics
Symbol Alt.
Parameter
t_CH1CH2
(1)
t_R Clock Rise Time
t_CL1CL2(1)
t_F
Clock Fall Time
t_DH1DH2(1
t_R
SDA Rise Time
)
t_DL1DL2(1)
t_F
SDA Fall Time
t_CHDX ^{(2) t}_SU:STA Clock High to Input Transition
t_CHCL
t_HIGH Clock Pulse Width High
t_DLCL t_HD:STA Input Low to Clock Low (START)
t_CLDX t_HD:DAT Clock Low to Input Transition
t_CLCH
t_LOW Clock Pulse Width Low
t_DXCX t_SU:DAT Input Transition to Clock Transition
t_CHDH t_SU:STO Clock High to Input High (STOP)
t_DHDL
t_BUF Input High to Input Low (Bus Free)
t_CLQV
t_AA Clock Low to Data Out Valid
t_CLQX
t_DH Data Out Hold Time After Clock Low
f_C
f_SCL Clock Frequency
1. Sampled only, not 100% tested.
2. For a reSTART condition, or following a write cycle.
Fast I²C
400 kHz
I²C
100 kHz _Unit
Min Max Min Max
300
1000 ns
300
300 ns
20 300 20 1000 ns
20 300 20 300 ns
600
4700
ns
600
4000
ns
600
4000
ns
0
0
µs
1.3
4.7
µs
100
250
ns
600
4000
ns
1.3
4.7
µs
1000
3500 ns
200
200
ns
400
100 kHz
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Doc ID 8880 Rev 4