CRX14_10 Datasheet, PDF (37/47 Pages) STMicroelectronics – ISO14443 type-B contactless coupler chip with anti-collision, CRC management and anti-clone function

CRX14
DC and AC parameters
Table 11. I²C DC characteristics (continued)
Symbol
Parameter
Test condition
Min. Max. Unit
I_CC Supply Current
V_CC = 5 V, f_C = 400 kHz
(rise/fall time < 30ns), RF OFF
V_CC = 5V, f_C = 400 kHz (rise/fall
time < 30ns), RF ON
6
mA
20 mA
I_CC1 Supply Current (Stand-by)
V_IN = V_SS or V_CC, V_CC = 5 V, RF
OFF
5
mA
Input Low Voltage (SCL,
SDA)
V_IL
Input Low Voltage (E0, E1,
E2)
–0.3 0.3V_CC V
–0.3 0.3V_CC V
Input High Voltage (SCL,
SDA)
V_IH
Input High Voltage (E0, E1,
E2)
0.7V_CC V_CC + 1 V
0.7V_CC V_CC + 1 V
V_OL Output Low Voltage (SDA)
I_OL = 3 mA, V_CC = 5 V
0.4
V
Figure 34. I²C AC waveforms
tCHCL
CLCH
SCL
tDLCL
tDXCX
SDA IN
tCHDX
START
CONDITION
tCLDX
SDA
SDA
INPUT CHANGE
tCHDH
STOP &
BUS FREE
tDHDL
SCL
SDA OUT
tCLQV
DATA VALID
DATA OUTPUT
tCLQX
SCL
SDA IN
tCHDH
STOP
CONDITION
tRFEX
tCHDX
CRX14 command execution
START
CONDITION
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