CR14 STMicroelectronics, CR14 Datasheet - Page 36

• Manufacturer Part Number: CR14
• Description: Low Cost Iso14443 Type-b Contactless Coupler Chip With Anti-collision And Crc Management
• Manufacturer: STMicroelectronics

9 DC and AC parameters
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DC and AC parameters
This section summarizes the operating and measurement conditions, and the DC and AC
characteristics of the device. The parameters in the DC and AC Characteristic tables that follow
are derived from tests performed under the Measurement Conditions summarized in the
relevant tables. Designers should check that the operating conditions in their circuit match the
measurement conditions when relying on the quoted parameters.
Table 9.
Figure 33. I²C AC Testing I/O Waveform
Table 10.
1. Sampled only, not 100% tested.
2. T
V
Ambient Operating Temperature (T
Input Rise and Fall Times
Input Pulse Voltages
Input and Output Timing Reference Voltages
Symbol
CC
C
C
t
NS
Supply Voltage
A
IN
IN
= 25 °C, f = 400kHz.
Input Capacitance (SDA)
Input Capacitance (SCL, E0, E1, E2))
Low Pass Filter Input Time Constant (SCL & SDA
Inputs)
I²C AC Measurement Conditions
I²C Input Parameters
Parameter
0.2V CC
0.8V CC
Parameter
A
)
(1,2)
0.2V
0.3V
Min.
–20
Test Condition
4.5
CC
CC
0.3V CC
0.7V CC
AI09235
0.8V
0.7V
Max.
5.5
85
50
Min.
100
CC
CC
Max.
400
8
6
Unit
°C
ns
V
V
V
CR14
Unit
pF
pF
ns