pca9538d NXP Semiconductors, pca9538d Datasheet - Page 13

• Manufacturer Part Number: pca9538d
• Description: 8-bit I2c And Smbus Low Power I/o Port With Interrupt And Reset
• Manufacturer: NXP Semiconductors

Philips Semiconductors
TEST CIRCUITS
2006 Sep 21
8-bit I
I/O port with interrupt and reset
PROTOCOL
From Output
Under Test
SDA
SCL
2
C-bus and SMBus low power
C
L
= 50 pF
Figure 19. Test circuit
t
SU;STA
t
BUF
TEST
CONDITION
t
pv
START
(S)
t HD;STA
500
Load Circuit
Figure 17. I
500
DEFINITIONS
R
C
R
2 V
GENERATOR
S1
L
L
T
DD
t
PULSE
= Load resistor.
= Load capacitance includes jig and probe capacitance
= Termination resistance should be equal to the output
LOW
r t
S1
impedance Z
2
BIT 7
MSB
C-bus timing diagram; rise and fall times refer to V
(A7)
Figure 18. Test circuitry for switching times
SA00652
2V
GND
t HIGH
DD
Open
V
I
O
t
R
of the pulse generators.
t
SU;DAT
T
f
1 / f SCL
BIT 6
(A6)
D.U.T.
V
DD
13
t
HD;DAT
V
O
R
L
= 500
(R/W)
BIT 0
C
50 pF
L
t
VD;DAT
ACKNOWLEDGE
IL
Open
SW02181
V
(A)
DD
and V
IH
t
VD;ACK
CONDITION
STOP
(S)
t
PCA9538
SU;STO
Product data sheet
SW02210