TCA9539_15 Datasheet, PDF (12/42 Pages) Texas Instruments – Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander

TCA9539
SCPS202B – OCTOBER 2009 – REVISED OCTOBER 2015
Parameter Measurement Information (continued)
V_CC
DUT
R_L = 4.7 kΩ
INT
C_L = 100 pF
(see Note A)
INTERRUPT LOAD CONFIGURATION
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SCL
SDA
Read From
Port
Data Into
Port
123 4 5 6 7 8 9
Slave Address
Data From Port
S 1 1 1 0 1 A1 A0 1 A
Data 1
Start
Condition
R/W
ACK From
Slave
Data 2
Data 3
t_ph
t_ps
Data From Port
A
Data 4
NA P
ACK From
Master
NACK From
Master
Stop
Condition
Data 4
Data 5
INT
t_iv
t_ir
0.7 × V_CC
INT
0.3 × V_CC
SCL
R/W
A
t_iv
t_ir
0.7 × V_CC
0.3 × V_CC
Data Into
Port (P_n)
0.7 × V_CC
INT
0.3 × V_CC
0.7 × V_CC
0.3 × V_CC
A. C_L includes probe and jig capacitance.
B. All inputs are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z_O = 50 Ω, t_r/t_f ≤ 30 ns.
C. All parameters and waveforms are not applicable to all devices.
Figure 19. Interrupt Load Circuit And Voltage Waveforms
12
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