CAT9532_16 Datasheet, PDF (5/14 Pages) ON Semiconductor – 16-bit Programmable LED Dimmer

CAT9532
Table 4. A.C. CHARACTERISTICS (V_CC = 2.3 V to 5.5 V, T_A = −40°C to +85°C, unless otherwise specified) (Note 5)
Standard I²C
Fast I²C
Symbol
Parameter
Min
Max
Min
Max
F_SCL
Clock Frequency
100
400
t_HD:STA
START Condition Hold Time
4
0.6
t_LOW
Low Period of SCL Clock
4.7
1.3
t_HIGH
High Period of SCL Clock
4
0.6
t_SU:STA
START Condition Setup Time
4.7
0.6
t_HD:DAT
Data In Hold Time
0
0
t_SU:DAT
Data In Setup Time
250
100
t_R (Note 6)
SDA and SCL Rise Time
1000
300
t_F (Note 6)
SDA and SCL Fall Time
300
300
t_SU:STO
STOP Condition Setup Time
4
0.6
t_BUF (Note 6)
Bus Free Time Between STOP and START
4.7
1.3
t_AA
SCL Low to Data Out Valid
3.5
0.9
t_DH
Data Out Hold Time
100
50
T_i (Note 6)
Noise Pulse Filtered at SCL and SDA Inputs
50
50
PORT TIMING
t_PV
t_PS
t_PH
RESET
Output Data Valid
Input Data Setup Time
Input Data Hold Time
200
100
1
t_W (Note 6)
Reset Pulse Width
20
t_REC
Reset Recovery Time
0
t_RESET (Note 7)
Time to Reset
400
5. Test conditions according to “AC Test Conditions” table.
6. This parameter is characterized initially and after a design or process change that affects the parameter. Not 100% tested.
7. The full delay to reset the part will be the sum of t_RESET and the RC time constant of the SDA line.
Table 5. AC TEST CONDITIONS
Input Pulse Voltage
Input Rise and Fall Times
Input Reference Voltage
Output Reference Voltage
Output Load
0.2 V_CC to 0.8 V_CC
≤5 ns
0.3 V_CC, 0.7 V_CC
0.5 V_CC
Current source: I_OL = 3 mA; 400 pF for f_SCL(max) = 400 kHz
Units
kHz
ms
ms
ms
ms
ms
ns
ns
ns
ms
ms
ms
ns
ns
ns
ns
ms
ns
ns
ns
t_F
t_HIGH
t_R
t_LOW
t_LOW
SCL
t_SU:STA
SDA IN
t_HD:STA
t_HD:DAT
t_SU:DAT
SDA OUT
t_AA
t_DH
t_SU:STO
t_BUF
Figure 4. 2−Wire Serial Interface Timing
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