PCA9674BS,118 NXP Semiconductors, PCA9674BS,118 Datasheet - Page 12

• Manufacturer Part Number: PCA9674BS,118
• Description: IC I/O EXPANDER I2C 8B 16HVQFN
• Manufacturer: NXP Semiconductors

Specifications of PCA9674BS,118

• Package / Case: 16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN
• Interface: I²C
• Number Of I /o: 8
• Interrupt Output: Yes
• Frequency - Clock: 1MHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Includes: POR
• Logic Family: PCA9674
• Number Of Lines (input / Output): 8.0 / 8.0
• Operating Supply Voltage: 2.3 V to 5.5 V
• Power Dissipation: 400 mW
• Operating Temperature Range: - 40 C to + 85 C
• Input Voltage: 5.5 V
• Logic Type: I/O Expander
• Maximum Clock Frequency: 1 MHz
• Mounting Style: SMD/SMT
• Number Of Input Lines: 8.0
• Number Of Output Lines: 8.0
• Output Current: 50 mA
• Output Voltage: 5.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-4222-2; 935282738118; PCA9674BS-T; PCA9674BS-T

NXP Semiconductors
PCA9674_PCA9674A_5
Product data sheet
7.2.2 Device ID (PCA9674/74A ID field)
The Device ID field is a 3-byte read-only (24 bits) word giving the following information:
The Device ID is read-only, hardwired in the device and can be accessed as follows:
1. START command
2. The master sends the Reserved Device ID I
3. The master sends the I
4. The master sends a Re-START command.
5. The master sends the Reserved Device ID I
6. The device ID read can be done, starting with the 8 manufacturer bits (first byte +
7. The master ends the reading sequence by NACKing the last byte, thus resetting the
Fig 11. PCA9674/74A ID
•
•
•
8 bits with the manufacturer name, unique per manufacturer (for example, NXP).
13 bits with the part identification, assigned by manufacturer, the 7 MSBs with the
category ID and the 6 LSBs with the feature ID (for example, for example
PCA9674/74A 16-bit quasi-output I/O expander).
3 bits with the die revision, assigned by manufacturer (for example, Rev X).
bit set to 0 (write).
The LSB is a ‘Don’t care’ value. Only one device must acknowledge this byte (the one
that has the I
Remark: A STOP command followed by a START command will reset the slave state
machine and the Device ID read cannot be performed.
Remark: A STOP command or a Re-START command followed by an access to
another slave device will reset the slave state machine and the Device ID read cannot
be performed.
bit set to 1 (read).
4 MSB of the second byte), followed by the 13 part identification bits and then the
3 die revision bits (3 LSB of the third byte).
slave device state machine and allowing the master to send the STOP command.
Remark: The reading of the Device ID can be stopped anytime by sending a NACK
command.
Remark: If the master continues to ACK the bytes after the third byte, the
PCA9674/74A rolls back to the first byte and keeps sending the Device ID sequence
until a NACK has been detected.
For the PCA9674/74A, the Device ID is as shown in
part identification
2
C-bus slave address).
Rev. 05 — 15 June 2009
2
0
C-bus slave address of the slave device it needs to identify.
Remote 8-bit I/O expander for Fm+ I
0
category identification
manufacturer
0
0
0
0
0
2
2
C-bus address ‘1111 100’ with the R/W
C-bus address ‘1111 100’ with the R/W
0
1
0
0
Figure
feature identification
0
0
revision
PCA9674/74A
0
1
11.
0
0
0
2
C-bus with interrupt
002aac118
0
1
0
© NXP B.V. 2009. All rights reserved.
0
1
0
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