PCA9673PW,112 NXP Semiconductors, PCA9673PW,112 Datasheet - Page 6

• Manufacturer Part Number: PCA9673PW,112
• Description: IC I/O EXPANDER I2C 16B 24TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9673PW,112

• Interface: I²C
• Number Of I /o: 16
• Interrupt Output: Yes
• Frequency - Clock: 1MHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Includes: POR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-4200-5; 935283558112; PCA9673PW

NXP Semiconductors
7. Functional description
PCA9673_1
Product data sheet
7.1 Device address
Table 2.
[1]
Refer to
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
PCA9673 is shown in
addresses. To conserve power, no internal pull-up resistors are incorporated on AD1 and
AD0. Address values depending on AD1 and AD0 can be found in
address
Remark: The General Call address (0000 0000b) and the Device ID address
(1111 100Xb) are reserved and cannot be used as device address. Failure to follow this
requirement will cause the PCA9673 not to acknowledge.
Remark: Reserved I
with:
The last bit of the first byte defines the operation to be performed. When set to logic 1 a
read is selected, while a logic 0 selects a write operation.
When AD1 and AD0 are held to V
Symbol
SCL
SDA
V
Fig 9. PCA9673 address
•
•
•
DD
HVQFN and DHVQFN package die supply ground is connected to both the V
pad. The V
electrical, and board-level performance, the exposed pad needs to be soldered to the board using a
corresponding thermal pad on the board, and for proper heat conduction through the board thermal vias
need to be incorporated in the PCB in the thermal pad region.
“reserved for future use” I
1111 111)
slave devices that use the 10-bit addressing scheme (1111 0xx)
High speed mode (Hs-mode) master code (0000 1xx)
Figure 1 “Block diagram of
map”.
Pin description
Pin
SO24, SSOP24,
TSSOP24, DHVQFN24
22
23
24
SS
pin must be connected to supply ground for proper device operation. For enhanced thermal,
Remote 16-bit I/O expander for Fm+ I
2
C-bus addresses must be used with caution since they can interfere
Rev. 01 — 1 February 2007
Figure
…continued
9. Slave address pins AD1 and AD0 choose 1 of 16 slave
2
A6
C-bus addresses (0000 011, 1111 101, 1111 110,
DD
A5
PCA9673”.
or V
HVQFN24
19
20
21
programmable
slave address
A4
SS
A3
, the same address as the PCF8575 is applied.
A2
Description
serial clock line input
serial data line input/output
supply voltage
A1
A0
002aab636
2
R/W
C-bus with interrupt and reset
SS
Table 3 “PCA9673
pin and the exposed center
PCA9673
© NXP B.V. 2007. All rights reserved.
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