PCA9555
REMOTE 16-BIT I2C AND SMBus I/O EXPANDER
WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS
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SCPS131D–AUGUST 2005–REVISED OCTOBER 2006
PARAMETER MEASUREMENT INFORMATION (continued)
V
CC
R
L
= 1 kΩ
Pn
SDA
DUT
DUT
C
L
= 50 pF
C = 100 pF
L
SDA LOAD CONFIGURATION
Start
P-PORT LOAD CONFIGURATION
SCL
ACK or Read Cycle
SDA
0.3 y V
CC
t
REC
RESET
V
/2
CC
CC
t
REC
t
w
Pn
V
/2
t
RESET
A. CL includes probe and jig capacitance.
B. All inputs are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr/tf ≤ 30 ns.
C. The outputs are measured one at a time, with one transition per measurement.
D. I/Os are configured as inputs.
E. All parameters and waveforms are not applicable to all devices.
Figure 14. Reset Load Circuits and Voltage Waveforms
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