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PCA9654E, PCA9654EA
8-bit I/O Expander for I2C
Bus and SMBus with
Interrupt
The PCA9654E/PCA9654EA provides 8 bits of General Purpose
parallel Input/Output (GPIO) expansion for I 2 C−bus/SMBus
applications.
The PCA9654E/PCA9654EA consists of 8−bit Configuration
(Input or Output selection), Input, Output and Polarity Inversion
(active HIGH or active LOW operation) registers. The system master
may set the I/Os as either inputs or outputs by writing to the I/O
configuration bits. The data for each Input or Output is kept in the
corresponding Input or Output register. The polarity of the read
register can be inverted with the Polarity Inversion register. All
registers can be read by the system master.
The PCA9654E/PCA9654EA open−drain interrupt (INT) output is
activated when any input state differs from its corresponding input
port register state and is used to indicate to the system master that an
input state has changed. The power−on reset sets the registers to their
default values and initializes the device state machine.
Three hardware pins (AD0, AD1, AD2) vary the fixed I2C bus
address and allow up to 64 devices to share the same I2C−bus/SMBus.
The PCA9654EA has a different address map from the PCA9654E.
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MARKING
DIAGRAMS
16
1
SOIC−16
D SUFFIX
CASE 751B
PCA9654EG
AWLYWW
1
16
PCA9
654E
ALYWG
G
1
TSSOP−16
DT SUFFIX
CASE 948F
1
16
1
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
VDD Operating Range: 1.65 V to 5.5 V
SDA Sink Capability: 30 mA
5.5 V Tolerant I/Os
Polarity Inversion Register
Active LOW Interrupt Output
Low Standby Current
Noise Filter on SCL/SDA Inputs
No Glitch on Power−up
Internal Power−on Reset
64 Programmable Slave Addresses Using 3 Address Pins
8 I/O Pins which Default to 8 Inputs
I2C SCL Clock Frequencies Supported:
Standard Mode: 100 kHz
Fast Mode: 400 kHz
Fast Mode +: 1 MHz
ESD Performance: 4000 V Human Body Model,
400 V Machine Model
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
XXMG
G
1
WQFN16
MT SUFFIX
CASE 488AP
16
1
1
QFN16 3x3
MN SUFFIX
CASE 485G
XXXX
XXXX
ALYWG
G
16
1
1
QFN16 4x4
MN SUFFIX
CASE 485AP
XXXX
A
M
WL, L
Y
WW, W
G or G
XXXXXX
XXXXXX
ALYWG
G
= Specific Device Code
= Assembly Location
= Date Code / Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
This document contains information on some products that are still under development.
ON Semiconductor reserves the right to change or discontinue these products without
notice.
© Semiconductor Components Industries, LLC, 2015
March, 2017 − Rev. 3
1
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
Publication Order Number:
PCA9654E/D
PCA9654E, PCA9654EA
BLOCK DIAGRAM
Remark: All I/Os are set to inputs at reset.
Figure 1. Block Diagram
data from
shift register
data from
shift register
output port
register data
configuration
register
D
VDD
Q1
Q
FF
write
configuration
pulse
write pulse
CK
100 kW
Q
D
Q
FF
I/O pin
Q2
CK
output port
register
input port
register
D
Q
FF
read pulse
VSS
input port
register data
CK
to INT
polarity inversion
register
data from
shift register
D
Q
FF
write polarity
pulse
CK
At power−on reset, all registers return to default values.
Figure 2. Simplified Schematic of I/Os
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2
polarity
inversion
register data
PCA9654E, PCA9654EA
VSS 8
VDD
SDA
SCL
INT
IO7
IO6
IO5
IO4
IO0
2
IO1
3
IO2
4
14 VDD
13 SDA
11 INT
PCA9654E
PCA9654EA
10 IO7
9
IO6
IO5 8
PCA9654E
PCA9654EA
16
15
14
13
12
11
10
9
12 SCL
IO4 7
1
2
3
4
5
6
7
1
IO3 5
AD0
AD1
AD2
IO0
IO1
IO2
IO3
AD2
VSS 6
terminal 1
index area
15 AD0
16 AD1
PIN ASSIGNMENT
Transparent top view
Figure 4. WQFN16 / QFN16
Figure 3. SOIC16 / TSSOP16
Table 1. PIN DESCRIPTIONS
Pin
Symbol
SOIC16, TSSOP16
QFN16, WQFN16
AD0
1
15
Address Input 0
AD1
2
16
Address Input 1
AD2
3
1
Address Input 2
IO0
4
2
I/O 0
IO1
5
3
I/O 1
IO2
6
4
I/O 2
IO3
7
5
I/O 3
VSS
8
6
Supply Ground
IO4
9
7
I/O 4
IO5
10
8
I/O 5
Description
IO6
11
9
I/O 6
IO7
12
10
I/O 7
INT
13
11
Interrupt Output (active−LOW)
SCL
14
12
Serial Clock Line
SDA
15
13
Serial Data Line
VDD
16
14
Supply Voltage
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3
PCA9654E, PCA9654EA
Table 2. MAXIMUM RATINGS
Symbol
Value
Unit
VDD
DC Supply Voltage
Parameter
−0.5 to +7.0
V
VI/O
Input / Output Pin Voltage
−0.5 to +7.0
V
II
Input Current
$20
mA
IO
Output Current
$50
mA
IDD
DC Supply Current
$100
mA
IGND
DC Ground Current
$200
mA
PTOT
Total Power Dissipation
400
mW
POUT
Power Dissipation per Output
100
mW
TSTG
Storage Temperature Range
−65 to +150
°C
TL
Lead Temperature, 1 mm from Case for 10 Seconds
260
°C
TJ
Junction Temperature Under Bias
150
°C
qJA
Thermal Resistance
82
124
79
80
80
°C/W
PD
Power Dissipation in Still Air at 85°C
190
mW
MSL
Moisture Sensitivity
FR
Flammability Rating
VESD
ILATCHUP
SOIC−16 (Note 1)
TSSOP−16
WQFN16
3 x 3 QFN16
4 x 4 QFN16
Level 1
Oxygen Index: 28 to 34
ESD Withstand Voltage
UL 94 V−0 @ 0.125 in
Human Body Model (Note 2)
Machine Model (Note 3)
Charged Device Model (Note 4)
Latchup Performance Above VCC and Below GND at 125°C (Note 5)
> 4000
> 400
N/A
V
$300
mA
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Measured with minimum pad spacing on an FR4 board, using 10 mm−by−1 inch, 2 ounce copper trace no air flow.
2. Tested to EIA / JESD22−A114−A.
3. Tested to EIA / JESD22−A115−A.
4. Tested to JESD22−C101−A.
5. Tested to EIA / JESD78.
Table 3. RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
VDD
Positive DC Supply Voltage
VI/O
Switch Input / Output Voltage
TA
Operating Free−Air Temperature
Min
Max
Unit
1.65
5.5
V
0
5.5
V
−55
+125
°C
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
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4
PCA9654E, PCA9654EA
Table 4. DC ELECTRICAL CHARACTERISTICS VDD = 1.65 V to 5.5 V, unless otherwise specified.
TA = −555C to +1255C
Typ
Max
Operating mode; no load;
VI = VDD or 0 V; fSCL = 1 MHz
VI = VDD or 0 V; fSCL = 100 kHz
250
104
500
175
Standby mode; no load;
VI = 0 V; fSCL = 0 Hz; I/O = inputs
VI = VDD; fSCL = 0 Hz; I/O = inputs
550
0.25
700
1
Parameter
Symbol
Conditions
Min
Unit
SUPPLIES
IDD
ISTB
VPOR
Supply Current
Standby Current
mA
mA
Power−On Reset Voltage (Note 6)
1.5
V
INPUT SCL; Input / Output SDA
VIH
High−Level Input Voltage
VIL
Low−Level Input Voltage
IOL
Low−Level Output Current
0.7 x VDD
V
0.3 x VDD
VOL = 0.4 V; VDD < 2.3 V
10
VOL = 0.4 V; VDD w 2.3 V
20
IL
Leakage Current
VI = VDD or GND
CI
Input Capacitance
VI = GND
VIH
High−Level Input Voltage
2.3 V ≤ VCC ≤ 5.5 V
1.65 V ≤ VCC ≤ 2.3 V
VIL
Low−Level Input Voltage
2.3 V ≤ VCC ≤ 5.5 V
1.65 V ≤ VCC ≤ 2.3 V
IOL
Low−Level Output Current
(Note 7)
VOL = 0.5 V; VDD = 1.65 V
VOL = 0.5 V; VDD = 2.3 V
VOL = 0.5 V; VDD = 3.0 V
VOL = 0.5 V; VDD = 4.5 V
Total Low−Level Output Current
(Note 7)
VOL = 0.5 V; VDD = 4.5 V
VOH
High−Level Output Voltage
IOH = −3 mA; VDD = 1.65 V
IOH = −4 mA; VDD = 1.65 V
IOH = −8 mA; VDD = 2.3 V
IOH = −10 mA; VDD = 2.3 V
IOH = −8 mA; VDD = 3.0 V
IOH = −10 mA; VDD = 3.0 V
IOH = −8 mA; VDD = 4.5 V
IOH = −10 mA; VDD = 4.5 V
ILH
Input Leakage Current
VDD = 5.5 V; VI = VDD
ILL
Input Leakage Current
VDD = 5.5 V; VI = GND
V
mA
$1
mA
6
pF
I/Os
IOL(tot)
CI/O
2.0
0.7 x VDD
V
0.8
0.3 x VDD
8
12
17
25
13
22
28
37
mA
200
1.2
1.1
1.8
1.7
2.6
2.5
4.1
4.0
Input / Output Capacitance
(Note 8)
V
mA
V
3.7
1
mA
−100
mA
5
pF
INTERRUPT (INT)
IOL
Low−Level Output Current
CO
Output Capacitance
VOL = 0.4 V
6
mA
2.1
5
pF
INPUTS AD0, AD1, AD2
VIH
High−Level Input Voltage
2.3 V ≤ VCC ≤ 5.5 V
1.65 V ≤ VCC ≤ 2.3 V
VIL
Low−Level Input Voltage
2.3 V ≤ VCC ≤ 5.5 V
1.65 V ≤ VCC ≤ 2.3 V
IL
Leakage Current
VI = VDD or GND
CI
Input Capacitance
2.0
0.7 x VDD
V
2.4
the I2C bus logic with VDD < VPOR
0.8
0.3 x VDD
V
$1
mA
5
pF
6. The power−on reset circuit resets
and set all I/Os to logic 1 upon power−up. Thereafter, VDD must be lower
than 0.2 V to reset the part.
7. Each bit must be limited to a maximum of 25 mA and the total package limited to 200 mA due to internal bussing limits.
8. The value is not tested, but verified on sampling basis.
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5
PCA9654E, PCA9654EA
Table 5. AC ELECTRICAL CHARACTERISTICS VDD = 1.65 V to 5.5 V; TA = −55°C to +125°C, unless otherwise specified.
Standard
Mode
Parameter
Symbol
Fast Mode
Fast Mode +
Min
Max
Min
Max
Min
Max
Unit
0
0.1
0
0.4
0
1.0
MHz
fSCL
SCL Clock Frequency
tBUF
Bus−Free Time between a STOP and START
Condition
4.7
1.3
0.5
ms
tHD:STA
Hold Time (Repeated) START Condition
4.0
0.6
0.26
ms
tSU:STA
Setup Time for a Repeated START Condition
4.7
0.6
0.26
ms
tSU:STO
Setup Time for STOP Condition
4.0
0.6
0.26
ms
tHD:DAT
Data Hold Time
tVD:ACK
Data Valid Acknowledge Time (Note 9)
0.3
0
tVD:DAT
Data Valid Time (Note 10)
300
tSU:DAT
Data Setup Time
tLOW
tHIGH
0
0
ns
0.05
0.45
ms
50
50
450
ns
250
100
50
ns
LOW Period of SCL
4.7
1.3
0.5
ms
HIGH Period of SCL
4.0
0.6
0.26
ms
3.45
0.1
0.9
tf
Fall Time of SDA and SCL (Notes 12 and 13)
300
20 + 0.1Cb
(Note 11)
300
120
ns
tr
Rise Time of SDA and SCL
1000
20 + 0.1Cb
(Note 11)
300
120
ns
50
50
50
ns
350
350
350
ns
tSP
Pulse Width of Spikes Suppressed by Input Filter
(Note 14)
PORT TIMING: CL v 100 pF (See Figures 7 and 10)
tV(Q)
Data Output Valid Time
tSU(D)
Data Input Setup Time
100
100
100
ns
tH(D)
Data Input Hold Time
1
1
1
ms
INTERRUPT TIMING: CL v 100 pF (See Figure 10)
tV(INT_N)
tRST(INT_N)
Data Valid Time
4
4
4
ms
Reset Delay Time
4
4
4
ms
9. tVD:ACK = time for Acknowledgment signal from SCL LOW to SDA (out) LOW.
10. tVD:DAT = minimum time for SDA data out to be valid following SCL LOW.
11. Cb = total capacitance of one bus line in pF.
12. A master device must internally provide a hold time of al least 300 ns for the SDA signal (refer to VIL of the SCL signal) in order to bridge
the undefined region SCL’s falling edge.
13. The maximum tf for the SDA and SCL bus lines is specified at 300 ns. The maximum fall time for the SDA output stage tf is specified at 250 ns.
This allows series protection resistors to be connected between the SDA and the SCL pins and the SDA/SCL bus lines without exceeding
the maximum specified tf.
14. Input filters on the SDA and SCL inputs suppress noise spikes less than 50 ns.
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
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6
PCA9654E, PCA9654EA
Device Address
slave address
Following a START condition, the bus master must send
the address of the slave it is accessing and the operation it
wants to perform (read or write). The address of the
PCA9654E/PCA9654EA is shown in Figure 5. Slave
address pins AD2, AD1, and AD0 choose 1 of 64 slave
addresses. To conserve power, no internal pull−up resistors
are incorporated on AD2, AD1, and AD0. Address values
can be found on Table 6 “PCA9654E Address Map” and
Table 7 “PCA9654EA Address Map”.
A6
A5
A4
A3
A2
A1
A0
R/W
programmable
Figure 5. PCA9654E / PCA9654EA Device Address
A logic 1 on the last bit of the first byte selects a read operation while a logic 0 selects a write operation.
Table 6. PCA9654E ADDRESS MAP
Address Input
Slave Address
AD2
AD1
AD0
A6
A5
A4
A3
A2
A1
A0
HEX
GND
SCL
GND
0
0
1
0
0
0
0
20h
GND
SCL
VDD
0
0
1
0
0
0
1
22h
GND
SDA
GND
0
0
1
0
0
1
0
24h
GND
SDA
VDD
0
0
1
0
0
1
1
26h
VDD
SCL
GND
0
0
1
0
1
0
0
28h
VDD
SCL
VDD
0
0
1
0
1
0
1
2Ah
VDD
SDA
GND
0
0
1
0
1
1
0
2Ch
VDD
SDA
VDD
0
0
1
0
1
1
1
2Eh
GND
SCL
SCL
0
0
1
1
0
0
0
30h
GND
SCL
SDA
0
0
1
1
0
0
1
32h
GND
SDA
SCL
0
0
1
1
0
1
0
34h
GND
SDA
SDA
0
0
1
1
0
1
1
36h
VDD
SCL
SCL
0
0
1
1
1
0
0
38h
VDD
SCL
SDA
0
0
1
1
1
0
1
3Ah
VDD
SDA
SCL
0
0
1
1
1
1
0
3Ch
VDD
SDA
SDA
0
0
1
1
1
1
1
3Eh
GND
GND
GND
0
1
0
0
0
0
0
40h
GND
GND
VDD
0
1
0
0
0
0
1
42h
GND
VDD
GND
0
1
0
0
0
1
0
44h
GND
VDD
VDD
0
1
0
0
0
1
1
46h
VDD
GND
GND
0
1
0
0
1
0
0
48h
VDD
GND
VDD
0
1
0
0
1
0
1
4Ah
VDD
VDD
GND
0
1
0
0
1
1
0
4Ch
VDD
VDD
VDD
0
1
0
0
1
1
1
4Eh
GND
GND
SCL
0
1
0
1
0
0
0
50h
GND
GND
SDA
0
1
0
1
0
0
1
52h
GND
VDD
SCL
0
1
0
1
0
1
0
54h
GND
VDD
SDA
0
1
0
1
0
1
1
56h
VDD
GND
SCL
0
1
0
1
1
0
0
58h
VDD
GND
SDA
0
1
0
1
1
0
1
5Ah
VDD
VDD
SCL
0
1
0
1
1
1
0
5Ch
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7
PCA9654E, PCA9654EA
Table 6. PCA9654E ADDRESS MAP
Address Input
Slave Address
AD2
AD1
AD0
A6
A5
A4
A3
A2
A1
A0
HEX
VDD
VDD
SDA
0
1
0
1
1
1
1
5Eh
SCL
SCL
GND
1
0
1
0
0
0
0
A0h
SCL
SCL
VDD
1
0
1
0
0
0
1
A2h
SCL
SDA
GND
1
0
1
0
0
1
0
A4h
SCL
SDA
VDD
1
0
1
0
0
1
1
A6h
SDA
SCL
GND
1
0
1
0
1
0
0
A8h
SDA
SCL
VDD
1
0
1
0
1
0
1
AAh
SDA
SDA
GND
1
0
1
0
1
1
0
ACh
SDA
SDA
VDD
1
0
1
0
1
1
1
AEh
SCL
SCL
SCL
1
0
1
1
0
0
0
B0h
SCL
SCL
SDA
1
0
1
1
0
0
1
B2h
SCL
SDA
SCL
1
0
1
1
0
1
0
B4h
SCL
SDA
SDA
1
0
1
1
0
1
1
B6h
SDA
SCL
SCL
1
0
1
1
1
0
0
B8h
SDA
SCL
SDA
1
0
1
1
1
0
1
BAh
SDA
SDA
SCL
1
0
1
1
1
1
0
BCh
SDA
SDA
SDA
1
0
1
1
1
1
1
BEh
SCL
GND
GND
1
1
0
0
0
0
0
C0h
SCL
GND
VDD
1
1
0
0
0
0
1
C2h
SCL
VDD
GND
1
1
0
0
0
1
0
C4h
SCL
VDD
VDD
1
1
0
0
0
1
1
C6h
SDA
GND
GND
1
1
0
0
1
0
0
C8h
SDA
GND
VDD
1
1
0
0
1
0
1
CAh
SDA
VDD
GND
1
1
0
0
1
1
0
CCh
SDA
VDD
VDD
1
1
0
0
1
1
1
CEh
SCL
GND
SCL
1
1
1
0
0
0
0
E0h
SCL
GND
SDA
1
1
1
0
0
0
1
E2h
SCL
VDD
SCL
1
1
1
0
0
1
0
E4h
SCL
VDD
SDA
1
1
1
0
0
1
1
E6h
SDA
GND
SCL
1
1
1
0
1
0
0
E8h
SDA
GND
SDA
1
1
1
0
1
0
1
EAh
SDA
VDD
SCL
1
1
1
0
1
1
0
ECh
SDA
VDD
SDA
1
1
1
0
1
1
1
EEh
www.onsemi.com
8
PCA9654E, PCA9654EA
Table 7. PCA9654EA ADDRESS MAP
Address Input
Slave Address
AD2
AD1
AD0
A6
A5
A4
A3
A2
A1
A0
HEX
VSS
SCL
VSS
0
0
0
1
0
0
0
10h
VSS
SCL
VDD
0
0
0
1
0
0
1
12h
VSS
SDA
VSS
0
0
0
1
0
1
0
14h
VSS
SDA
VDD
0
0
0
1
0
1
1
16h
VDD
SCL
VSS
0
0
0
1
1
0
0
18h
VDD
SCL
VDD
0
0
0
1
1
0
1
1Ah
VDD
SDA
VSS
0
0
0
1
1
1
0
1Ch
VDD
SDA
VDD
0
0
0
1
1
1
1
1Eh
VSS
SCL
SCL
0
1
1
0
0
0
0
60h
VSS
SCL
SDA
0
1
1
0
0
0
1
62h
VSS
SDA
SCL
0
1
1
0
0
1
0
64h
VSS
SDA
SDA
0
1
1
0
0
1
1
66h
VDD
SCL
SCL
0
1
1
0
1
0
0
68h
VDD
SCL
SDA
0
1
1
0
1
0
1
6Ah
VDD
SDA
SCL
0
1
1
0
1
1
0
6Ch
VDD
SDA
SDA
0
1
1
0
1
1
1
6Eh
VSS
VSS
VSS
0
1
1
1
0
0
0
70h
VSS
VSS
VDD
0
1
1
1
0
0
1
72h
VSS
VDD
VSS
0
1
1
1
0
1
0
74h
VSS
VDD
VDD
0
1
1
1
0
1
1
76h
VDD
VSS
VSS
0
1
1
1
1
0
0
78h
VDD
VSS
VDD
0
1
1
1
1
0
1
7Ah
VDD
VDD
VSS
0
1
1
1
1
1
0
7Ch
VDD
VDD
VDD
0
1
1
1
1
1
1
7Eh
VSS
VSS
SCL
1
0
0
0
0
0
0
80h
VSS
VSS
SDA
1
0
0
0
0
0
1
82h
VSS
VDD
SCL
1
0
0
0
0
1
0
84h
VSS
VDD
SDA
1
0
0
0
0
1
1
86h
VDD
VSS
SCL
1
0
0
0
1
0
0
88h
VDD
VSS
SDA
1
0
0
0
1
0
1
8Ah
VDD
VDD
SCL
1
0
0
0
1
1
0
8Ch
VDD
VDD
SDA
1
0
0
0
1
1
1
8Eh
SCL
SCL
VSS
1
0
0
1
0
0
0
90h
SCL
SCL
VDD
1
0
0
1
0
0
1
92h
SCL
SDA
VSS
1
0
0
1
0
1
0
94h
SCL
SDA
VDD
1
0
0
1
0
1
1
96h
SDA
SCL
VSS
1
0
0
1
1
0
0
98h
SDA
SCL
VDD
1
0
0
1
1
0
1
9Ah
SDA
SDA
VSS
1
0
0
1
1
1
0
9Ch
SDA
SDA
VDD
1
0
0
1
1
1
1
9Eh
SCL
SCL
SCL
1
1
0
1
0
0
0
D0h
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9
PCA9654E, PCA9654EA
Table 7. PCA9654EA ADDRESS MAP
Address Input
Slave Address
AD2
AD1
AD0
A6
A5
A4
A3
A2
A1
A0
HEX
SCL
SCL
SDA
1
1
0
1
0
0
1
D2h
SCL
SDA
SCL
1
1
0
1
0
1
0
D4h
SCL
SDA
SDA
1
1
0
1
0
1
1
D6h
SDA
SCL
SCL
1
1
0
1
1
0
0
D8h
SDA
SCL
SDA
1
1
0
1
1
0
1
DAh
SDA
SDA
SCL
1
1
0
1
1
1
0
DCh
SDA
SDA
SDA
1
1
0
1
1
1
1
DEh
SCL
VSS
VSS
1
1
1
1
0
0
0
F0h
SCL
VSS
VDD
1
1
1
1
0
0
1
F2h
SCL
VDD
VSS
1
1
1
1
0
1
0
F4h
SCL
VDD
VDD
1
1
1
1
0
1
1
F6h
SDA
VSS
VSS
1
1
1
1
1
0
0
− (Note 15)
SDA
VSS
VDD
1
1
1
1
1
0
1
FAh
SDA
VDD
VSS
1
1
1
1
1
1
0
FCh
SDA
VDD
VDD
1
1
1
1
1
1
1
FEh
SCL
VSS
SCL
0
0
0
0
0
0
0
− (Note 15)
SCL
VSS
SDA
0
0
0
0
0
0
1
02h
SCL
VDD
SCL
0
0
0
0
0
1
0
04h
SCL
VDD
SDA
0
0
0
0
0
1
1
06h
SDA
VSS
SCL
0
0
0
0
1
0
0
08h
SDA
VSS
SDA
0
0
0
0
1
0
1
0Ah
SDA
VDD
SCL
0
0
0
0
1
1
0
0Ch
SDA
VDD
SDA
0
0
0
0
1
1
1
0Eh
15. The PCA9654EA does not acknowledge this AD2, AD1 and AD0 configuration.
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10
PCA9654E, PCA9654EA
REGISTERS
Command Byte
Table 8. COMMAND BYTE
COMMAND
PROTOCOL
REGISTER
0
Read byte
Input Port
1
Read / Write byte
Output Port
2
Read / Write byte
Polarity Inversion
3
Read / Write byte
Configuration
The command byte is the first byte to follow the address
byte during a write transmission. It is used as a pointer to
determine which of the following registers will be written or
read.
Register 0 − Input Port Register
This register is a read−only port. It reflects the incoming
logic levels of the pins, regardless of whether the pin is
defined as an input or an output by Register 3. Writes to this
register have no effect.
The default ‘X’ is determined by the externally applied
logic level, normally ‘1’ when no external signal externally
applied because of the internal pull−up resistors.
Table 9. INPUT PORT REGISTER
Bit
7
6
5
4
3
2
1
0
Symbol
I7
I6
I5
I4
I3
I2
I1
I0
Access
R
R
R
R
R
R
R
R
Default
X
X
X
X
X
X
X
X
Register 1 − Output Port Register
This register reflects the outgoing logic levels of the pins
defined as outputs by Register 3. Bit values in this register
have no effect on pins defined as inputs. Reads from this
register return the value that is in the flip−flop controlling the
output selection, not the actual pin value.
Table 10. OUTPUT PORT REGISTER
Bit
7
6
5
4
3
2
1
0
Symbol
O7
O6
O5
O4
O3
O2
O1
O0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
1
1
1
1
1
1
1
1
Register 2 − Polarity Inversion Register
This register allows the user to invert the polarity of the
Input Port register data. If a bit in this register is set (written
with ‘1’), the corresponding Input Port data is inverted. If a
bit in this register is cleared (written with a ‘0’), the Input
Port data polarity is retained.
Table 11. POLARITY INVERSION REGISTER
Bit
7
6
5
4
3
2
1
0
Symbol
N7
N6
N5
N4
N3
N2
N1
N0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
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11
PCA9654E, PCA9654EA
Register 3 − Configuration Register
This register configures the directions of the I/O pins. If
a bit in this register is set, the corresponding port pin is
enabled as an input with high−impedance output driver. If a
bit in this register is cleared, the corresponding port pin is
enabled as an output. At reset, the I/Os are configured as
inputs with a weak pull−up to VDD.
Table 12. CONFIGURATION REGISTER
Bit
7
6
5
4
3
2
1
0
Symbol
C7
C6
C5
C4
C3
C2
C1
C0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
1
1
1
1
1
1
1
1
Power−on Reset
I/O Port (Figure 2)
When power is applied to VDD, an internal Power−On
Reset (POR) holds the PCA9654E/PCA9654EA in a reset
condition until VDD has reached VPOR. At that point, the
reset condition is released and the PCA9654E/ PCA9654EA
registers and state machine will initialize to their default
states. Thereafter, VDD must be lowered below 0.2 V to reset
the device.
For a power reset cycle, VDD must be lowered below
0.2 V and then restored to the operating voltage.
When an I/O is configured as an input, FETs Q1 and Q2
are off, creating a high−impedance input with a weak
pull−up (100 kW typ.) to VDD. The input voltage may be
raised above VDD to a maximum of 5.5 V.
If the I/O is configured as an output, then either Q1 or Q2
is enabled, depending on the state of the Output Port register.
Care should be exercised if an external voltage is applied to
an I/O configured as an output because of the
low−impedance paths that exist between the pin and either
VDD or VSS.
Interrupt Output
The open−drain interrupt output is activated when one of
the port pins changes state and the pin is configured as an
input. The interrupt is deactivated when the input returns to
its previous state or the Input Port register is read.
Note that changing an I/O from an output to an input may
cause a false interrupt to occur if the state of the pin does not
match the contents of the Input Port register.
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12
PCA9654E, PCA9654EA
BUS TRANSACTIONS
Data is transmitted to the PCA9654E/PCA9654EA
registers using the Write mode as shown in Figure 6 and
Figure 7. Data is read from the PCA9654E/PCA9654EA
registers using the Read mode as shown in Figure 8 and
Figure 9. These devices do not implement an
auto−increment function, so once a command byte has been
sent, the register which was addressed will continue to be
accessed by reads until a new command byte has been sent.
Figure 6. Write to Output Port Registers
Figure 7. Write to Configuration or Polarity Inversion Register
Figure 8. Read from Register
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13
PCA9654E, PCA9654EA
Figure 9. Read Input Port Register
APPLICATION INFORMATION
Figure 10. Typical Application
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14
PCA9654E, PCA9654EA
Characteristics of the I2C−Bus
Bit Transfer
The I2C−bus is for 2−way, 2−line communication between
different ICs or modules. The two lines are a serial data line
(SDA) and a serial clock line (SCL). Both lines must be
connected to a positive supply via a pull−up resistor when
connected to the output stages of a device. Data transfer may
be initiated only when the bus is not busy.
One data bit is transferred during each clock pulse. The
data on the SDA line must remain stable during the HIGH
period of the clock pulse as changes in the data line at this
time will be interpreted as control signals (see Figure 11).
SDA
SCL
data line
stable;
data valid
change
of data
allowed
Figure 11. Bit Transfer
START and STOP Conditions
Both data and clock lines remain HIGH when the bus is
not busy. A HIGH−to−LOW transition of the data line while
the clock is HIGH is defined as the START condition (S). A
LOW−to−HIGH transition of the data line while the clock is
HIGH is defined as the STOP condition (P) (see Figure 12).
SDA
SDA
SCL
SCL
S
P
STOP condition
START condition
Figure 12. Definition of START and STOP Conditions
System Configuration
A device generating a message is a ‘transmitter’; a device
receiving is the ‘receiver’. The device that controls the
message is the ‘master’ and the devices which are controlled
by the master are the ‘slaves’ (see Figure 13).
SDA
SCL
MASTER
TRANSMITTER/
RECEIVER
SLAVE
RECEIVER
SLAVE
TRANSMITTER/
RECEIVER
MASTER
TRANSMITTER
MASTER
TRANSMITTER/
RECEIVER
SLAVE
Figure 13. System Configuration
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15
I2C−BUS
MULTIPLEXER
PCA9654E, PCA9654EA
Acknowledge
device that acknowledges has to pull down the SDA line
during the acknowledge clock pulse, so that the SDA line is
stable LOW during the HIGH period of the acknowledge
related clock pulse; set−up time and hold time must be taken
into account.
A master receiver must signal an end of data to the
transmitter by not generating an acknowledge on the last
byte that has been clocked out of the slave. In this event, the
transmitter must leave the data line HIGH to enable the
master to generate a STOP condition.
The number of data bytes transferred between the START
and the STOP conditions from transmitter to receiver is not
limited. Each byte of eight bits is followed by one
acknowledge bit. The acknowledge bit is a HIGH level put
on the bus by the transmitter, whereas the master generates
an extra acknowledge related clock pulse.
A slave receiver which is addressed must generate an
acknowledge after the reception of each byte. Also a master
must generate an acknowledge after the reception of each
byte that has been clocked out of the slave transmitter. The
data output
by transmitter
not acknowledge
data output
by receiver
acknowledge
SCL from master
1
2
S
8
9
clock pulse for
acknowledgement
START
condition
Figure 14. Acknowledgement of the I2C Bus
TIMING AND TEST SETUP
SDA
tr
tBUF
tf
tHD;STA
tSP
tLOW
SCL
tHD;STA
P
S
tSU;STA
tHD;DAT
tHIGH
tSU;DAT
Sr
Figure 15. Definition of Timing on the I2C Bus
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16
tSU;STO
P
PCA9654E, PCA9654EA
VDD
PULSE
GENERATOR
VI
RL
500 W
VO
VDD
open
GND
DUT
CL
50 pF
RT
RL = load resistor.
CL = load capacitance includes jig and probe capacitance.
RT = termination resistance should be equal to the output impedance of Zo of the pulse generators.
Figure 16. Test Circuitry for Switching Times
RL
from output under test
500 W
S1
2VDD
open
GND
RL
500 W
CL
50 pF
Figure 17. Load Circuit
ORDERING INFORMATION
Package
Shipping†
PCA9654EDR2G
SOIC−16
(Pb−Free)
2500 / Tape & Reel
PCA9654EDTR2G
TSSOP−16
(Pb−Free)
2500 / Tape & Reel
PCA9654EMTTBG
(In Development)
WQFN16
(Pb−Free)
3000 / Tape & Reel
PCA9654E3MNTWG
(In Development)
QFN16 (3x3)
(Pb−Free)
3000 / Tape & Reel
PCA9654E4MNTWG
(In Development)
QFN16 (4x4)
(Pb−Free)
2000 / Tape & Reel
PCA9654EADR2G
(In Development)
SOIC−16
(Pb−Free)
2500 / Tape & Reel
PCA9654EADTR2G
(In Development)
TSSOP−16
(Pb−Free)
2500 / Tape & Reel
PCA9654EAMTTBG
(In Development)
WQFN16
(Pb−Free)
3000 / Tape & Reel
PCA9654EA3MNTWG
(In Development)
QFN16 (3x3)
(Pb−Free)
3000 / Tape & Reel
PCA9654EA4MNTWG
(In Development)
QFN16 (4x4)
(Pb−Free)
2000 / Tape & Reel
Device
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
www.onsemi.com
17
PCA9654E, PCA9654EA
PACKAGE DIMENSIONS
SOIC−16
CASE 751B−05
ISSUE K
−A−
16
9
1
8
−B−
P
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR PROTRUSION
SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D
DIMENSION AT MAXIMUM MATERIAL CONDITION.
8 PL
0.25 (0.010)
B
M
S
G
R
K
F
X 45 _
C
−T−
SEATING
PLANE
J
M
D
16 PL
0.25 (0.010)
M
T B
S
A
S
SOLDERING FOOTPRINT
8X
6.40
16X
1
1.12
16
16X
0.58
1.27
PITCH
8
9
DIMENSIONS: MILLIMETERS
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18
DIM
A
B
C
D
F
G
J
K
M
P
R
MILLIMETERS
MIN
MAX
9.80
10.00
3.80
4.00
1.35
1.75
0.35
0.49
0.40
1.25
1.27 BSC
0.19
0.25
0.10
0.25
0_
7_
5.80
6.20
0.25
0.50
INCHES
MIN
MAX
0.386
0.393
0.150
0.157
0.054
0.068
0.014
0.019
0.016
0.049
0.050 BSC
0.008
0.009
0.004
0.009
0_
7_
0.229
0.244
0.010
0.019
PCA9654E, PCA9654EA
PACKAGE DIMENSIONS
TSSOP−16
CASE 948F
ISSUE B
16X K REF
0.10 (0.004)
0.15 (0.006) T U
M
T U
S
V
S
S
K
ÉÉÉ
ÇÇÇ
ÇÇÇ
ÉÉÉ
K1
2X
L/2
16
9
J1
B
−U−
L
SECTION N−N
J
PIN 1
IDENT.
N
0.25 (0.010)
8
1
M
0.15 (0.006) T U
S
A
−V−
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A DOES NOT INCLUDE MOLD
FLASH. PROTRUSIONS OR GATE BURRS.
MOLD FLASH OR GATE BURRS SHALL NOT
EXCEED 0.15 (0.006) PER SIDE.
4. DIMENSION B DOES NOT INCLUDE
INTERLEAD FLASH OR PROTRUSION.
INTERLEAD FLASH OR PROTRUSION SHALL
NOT EXCEED 0.25 (0.010) PER SIDE.
5. DIMENSION K DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.08 (0.003) TOTAL
IN EXCESS OF THE K DIMENSION AT
MAXIMUM MATERIAL CONDITION.
6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
7. DIMENSION A AND B ARE TO BE
DETERMINED AT DATUM PLANE −W−.
N
F
DETAIL E
−W−
C
0.10 (0.004)
−T− SEATING
PLANE
H
D
DETAIL E
G
DIM
A
B
C
D
F
G
H
J
J1
K
K1
L
M
MILLIMETERS
MIN
MAX
4.90
5.10
4.30
4.50
−−−
1.20
0.05
0.15
0.50
0.75
0.65 BSC
0.18
0.28
0.09
0.20
0.09
0.16
0.19
0.30
0.19
0.25
6.40 BSC
0_
8_
SOLDERING FOOTPRINT
7.06
1
0.65
PITCH
16X
0.36
16X
1.26
DIMENSIONS: MILLIMETERS
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19
INCHES
MIN
MAX
0.193 0.200
0.169 0.177
−−− 0.047
0.002 0.006
0.020 0.030
0.026 BSC
0.007
0.011
0.004 0.008
0.004 0.006
0.007 0.012
0.007 0.010
0.252 BSC
0_
8_
PCA9654E, PCA9654EA
PACKAGE DIMENSIONS
WQFN16, 1.8x2.6, 0.4P
CASE 488AP
ISSUE B
D
PIN 1 REFERENCE
2X
2X
L
A
ÉÉÉ
ÉÉÉ
ÉÉÉ
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS
3. DIMENSION b APPLIES TO PLATED TERMINAL
AND IS MEASURED BETWEEN 0.25 AND 0.30 MM
FROM TERMINAL.
4. COPLANARITY APPLIES TO THE EXPOSED PAD
AS WELL AS THE TERMINALS.
5. EXPOSED PADS CONNECTED TO DIE FLAG.
USED AS TEST CONTACTS.
L1
DETAIL A
ALTERNATE TERMINAL
CONSTRUCTIONS
E
ÉÉ
ÉÉ
EXPOSED Cu
0.15 C
0.15 C
B
A3
MOLD CMPD
A1
ÇÇ
ÉÉ
DETAIL B
A
DETAIL B
0.10 C
L
ALTERNATE
CONSTRUCTIONS
0.08 C
DIM
A
A1
A3
b
D
E
e
L
L1
L2
MILLIMETERS
MIN
MAX
0.70
0.80
0.00
0.050
0.20 REF
0.15
0.25
1.80 BSC
2.60 BSC
0.40 BSC
0.30
0.50
0.00
0.15
0.40
0.60
SEATING
PLANE
A1
DETAIL A
5
MOUNTING FOOTPRINT
C
A3
8
0.562
0.0221
15 X L
9
4
e
1
0.400
0.0157
0.225
0.0089
1
12
2.900
0.1142
16
L2
16 X
b
0.10 C A B
0.05 C
0.463
0.0182
NOTE 3
1.200
0.0472
2.100
0.0827
SCALE 20:1
www.onsemi.com
20
mm Ǔ
ǒinches
PCA9654E, PCA9654EA
PACKAGE DIMENSIONS
QFN16 3x3, 0.5P
CASE 485G
ISSUE F
D
A
B
ÇÇÇ
ÇÇÇ
ÇÇÇ
PIN 1
LOCATION
L
L1
DETAIL A
ALTERNATE TERMINAL
CONSTRUCTIONS
E
ÉÉ
ÉÉ
ÉÉ
0.10 C
2X
EXPOSED Cu
0.10 C
2X
TOP VIEW
DETAIL B
0.05 C
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED
TERMINAL AND IS MEASURED BETWEEN
0.25 AND 0.30 MM FROM TERMINAL.
4. COPLANARITY APPLIES TO THE EXPOSED
PAD AS WELL AS THE TERMINALS.
L
(A3)
ÇÇ
ÉÉ
MOLD CMPD
A1
DETAIL B
A
0.05 C
ALTERNATE
CONSTRUCTIONS
NOTE 4
A1
SIDE VIEW
C
SEATING
PLANE
L
DETAIL A
MILLIMETERS
MIN
NOM MAX
0.80
0.90
1.00
0.00
0.03
0.05
0.20 REF
0.18
0.24
0.30
3.00 BSC
1.65
1.75
1.85
3.00 BSC
1.65
1.75
1.85
0.50 BSC
0.18 TYP
0.30
0.40
0.50
0.00
0.08
0.15
RECOMMENDED
SOLDERING FOOTPRINT*
0.10 C A B
16X
A3
DIM
A
A1
A3
b
D
D2
E
E2
e
K
L
L1
16X
0.58
D2
PACKAGE
OUTLINE
8
4
9
1
E2
16X
2X
2X
1.84 3.30
K
1
16X
16
e
e/2
BOTTOM VIEW
16X
0.30
b
0.10 C A B
0.05 C
0.50
PITCH
NOTE 3
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
www.onsemi.com
21
PCA9654E, PCA9654EA
PACKAGE DIMENSIONS
QFN16 4x4, 0.65P
CASE 485AP
ISSUE A
ÇÇ
ÇÇ
ÇÇ
PIN 1
REFERENCE
L1
DETAIL A
OPTIONAL LEAD
CONSTRUCTIONS
E
ÉÉÉ
ÉÉÉ
EXPOSED Cu
0.15 C
2X
A
B
TOP VIEW
0.15 C
2X
DETAIL B
A
(A3)
ÉÉÉ
ÉÉÉ
ÇÇÇ
A3
MOLD CMPD
A1
DETAIL B
0.10 C
16X
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED
TERMINAL AND IS MEASURED BETWEEN
0.15 AND 0.30 MM FROM TERMINAL TIP.
4. COPLANARITY APPLIES TO THE EXPOSED
PAD AS WELL AS THE TERMINALS.
L
L
D
OPTIONAL LEAD
CONSTRUCTIONS
0.08 C
SIDE VIEW A1
NOTE 4
DETAIL A
D2
5
C
16X
MILLIMETERS
MIN
MAX
0.80
1.00
0.00
0.05
0.20 REF
0.25
0.35
4.00 BSC
2.00
2.20
4.00 BSC
2.00
2.20
0.65 BSC
0.20
−−−
0.45
0.65
−−−
0.15
SEATING
PLANE
MOUNTING FOOTPRINT*
L
4.30
8
4
DIM
A
A1
A3
b
D
D2
E
E2
e
K
L
L1
2.25
9
PKG
OUTLINE
E2
1
1
12
16X
K
16
16X
13
e
BOTTOM VIEW
b
0.10 C A B
0.05 C
NOTE 3
0.65
4.30 2.25
16X
0.78
PITCH
16X
0.35
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
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