PCA9670D,512 NXP Semiconductors, PCA9670D,512 Datasheet - Page 5

• Manufacturer Part Number: PCA9670D,512
• Description: IC I/O EXPANDER I2C 8B 16SOIC
• Manufacturer: NXP Semiconductors

Specifications of PCA9670D,512

• Interface: I²C
• Number Of I /o: 8
• 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: 16-SOIC (0.300", 7.5mm Width)
• Includes: POR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935282715512; PCA9670D; PCA9670D

NXP Semiconductors
7. Functional description
PCA9670_2
Product data sheet
7.1 Device address
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
PCA9670 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 “PCA9670 address
Remark: When using the PCA9670, reserved I
caution since they can interfere 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.
Fig 6. PCA9670 address
•
•
•
“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
Figure
Rev. 02 — 17 July 2007
map”.
6. Slave address pins AD2, AD1, and AD0 choose 1 of
2
A6
C-bus addresses (0000 011, 1111 101, 1111 110,
Remote 8-bit I/O expander for Fm+ I
A5
PCA9670”.
programmable
slave address
A4
DD
A3
or V
A2
SS
2
C-bus addresses must be used with
, the same address as the PCF8574 is
A1
A0
002aab636
R/W
PCA9670
© NXP B.V. 2007. All rights reserved.
2
C-bus with reset
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