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9534 Datasheet(PDF) 12 Page - NXP Semiconductors

Part # 9534
Description  8-bit I2C and SMBus, low power I/O port with interrupt
PDF  17 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

9534 Datasheet(HTML) 12 Page - NXP Semiconductors

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Philips Semiconductors
Product data sheet
PCA9534
8-bit I2C and SMBus low power I/O port with interrupt
2004 Sep 30
12
PROTOCOL
SCL
SDA
t
HD;STA
t
SU;DAT
t
HD;DAT
t
VD;DAT
t
f
r
t
t
BUF
t
SU;STA
t
LOW
t
HIGH
1 / f
SCL
START
CONDITION
(S)
BIT 7
MSB
(A7)
BIT 6
(A6)
ACKNOWLEDGE
(A)
t
VD;ACK
SW02287
BIT 8
(R/W)
STOP
CONDITION
(S)
t
SU;STO
Figure 14. I2C-bus timing diagram; rise and fall times refer to VIL and VIH
PULSE
GENERATOR
VI
VO
CL
50 pF
VCC
DEFINITIONS
RL = Load resistor.
CL = Load capacitance includes jig and probe capacitance
RT = Termination resistance should be equal to the output
impedance ZO of the pulse generators.
6.0 V
RT
Open
D.U.T.
RL = 500 Ω
SW02142
Figure 15. Test circuitry for switching times
CL = 50 pF
500
Ω
Load Circuit
TEST
S1
tpv
2 VDD
SA00652
500
Ω
From Output
Under Test
S1
2VDD
Open
GND
Figure 16. Test circuit



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