TCA9534_16 Datasheet, PDF (12/38 Pages) Texas Instruments – Low Voltage 8-Bit I2C and SMBUS Low-Power I/O Expander with Interrupt Output and Configuration Registers

TCA9534
SCPS197B – SEPTEMBER 2014 – REVISED NOVEMBER 2016
Parameter Measurement Information (continued)
V _CC
DUT
R _L = 4.7 kΩ
INT
C _L = 100 pF
(see Note A)
INTERRUPT LOAD CONFIGURATION
Start
Condition
Slave Address
ACK
From Slave
R/W
S 0 1 0 0 A2 A1 A0 1 A
8 Bits
(One Data Byte)
From Port
Data 1
ACK
From Slave
A
Data From Port
Data 2
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1P
1234 5678A
t _ir
INT
A
t _ir
B
B
Data
Into
Port
A
t _iv
A
Address
Data 1
t _sps
Data 2
INT
0.7 × V_CC
0.3 × V_CC
SCL
R/W
A
0.7 × V_CC
0.3 × V_CC
t _iv
Pn
0.7 × V_CC
INT
0.3 × V_CC
t _ir
0.7 × V_CC
0.3 × V_CC
View A−A
View B−B
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 20. Interrupt Load Circuit and Voltage Waveforms
12
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