PCA9671BS,118 NXP Semiconductors, PCA9671BS,118 Datasheet - Page 6

• Manufacturer Part Number: PCA9671BS,118
• Description: IC I/O EXPANDER I2C 16B 24HVQFN
• Manufacturer: NXP Semiconductors

Specifications of PCA9671BS,118

• Interface: I²C
• Number Of I /o: 16
• Interrupt Output: No
• Frequency - Clock: 1MHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-VQFN Exposed Pad, 24-HVQFN, 24-SQFN, 24-DHVQFN
• Includes: POR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935283369118; PCA9671BS-T; PCA9671BS-T

NXP Semiconductors
7. Functional description
PCA9671
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
PCA9671 is shown in
64 slave addresses. To conserve power, no internal pull-up resistors are incorporated on
AD2, AD1, and AD0. Address values depending on AD2, AD1, and AD0 can be found in
Table 3 “PCA9671 address
Remark: The General Call address (0000 0000) and the Device ID address (1111 100X)
are reserved and cannot be used as device address. Failure to follow this requirement will
cause the PCA9671 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 AD2, AD1 and AD0 are held to V
applied.
Symbol
AD0
SCL
SDA
V
Fig 9.
•
•
•
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
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
PCA9671 address
Pin description
Pin
SO24, SSOP24, QSOP24,
TSSOP24, DHVQFN24
21
22
23
24
SS
pin must be connected to supply ground for proper device operation. For enhanced thermal,
All information provided in this document is subject to legal disclaimers.
2
C-bus addresses must be used with caution since they can interfere
Figure
Rev. 2 — 29 July 2010
…continued
map”.
9. Slave address pins AD2, AD1, and AD0 choose 1 of
2
A6
C-bus addresses (0000 011, 1111 101, 1111 110, 1111 111)
Remote 16-bit I/O expander for Fm+ I
A5
PCA9671”.
programmable
slave address
A4
HVQFN24
18
19
20
21
DD
A3
or V
A2
SS
, the same address as the PCF8575 is
A1
Description
address input 0
serial clock line input
serial data line input/output
supply voltage
A0
002aab636
R/W
SS
pin and the exposed center
PCA9671
© NXP B.V. 2010. All rights reserved.
2
C-bus with reset
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