Datasheet

PCA9674_PCA9674A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 7 — 30 May 2013 36 of 40
NXP Semiconductors
PCA9674; PCA9674A
Remote 8-bit I/O expander for Fm+ I
2
C-bus with interrupt
Modifications: (continued) • Section 7.2.2 “Device ID (PCA9674; PCA9674A ID field)”:
– first bullet item following first paragraph changed from “8 bits with the manufacturer
name” to “12 bits with the manufacturer name”
– second bullet item re-written
– List item 6. on page 12
changed from “8 manufacturer bits ..., followed by the 13 part
identification bits” to “12 manufacturer bits ..., followed by the 9 part identification bits”
– Figure 10 “
PCA9674; PCA9674A Device ID field” updated
– Figure 11
modified: added Sr (ReSTART) bit
– added paragraph following Figure 11
• Section 8.1 “Quasi-bidirectional I/Os” is re-written
• Section 8.2 “Writing to the port (Output mode)”:
– first and second paragraphs are re-written
– Figure 13
updated
– added paragraph following Figure 13
• Section 8.3 “Reading from a port (Input mode)”:
– first and second paragraphs replaced with new first, second and third paragraphs
– Figure 14
updated
– added paragraph following Figure 14
• Section 8.4 “Power-on reset”: second and third sentences re-written
• Section 8.5 “Interrupt output (INT)” is re-written
• Section 9.3 “Acknowledge”, first paragraph: third sentence re-written
• Section 10.1 “Bidirectional I/O expander applications”:
– first paragraph, third sentence changed from “written to the I/Os used as outputs” to
“written to the ports used as outputs”
– second paragraph, second sentence changed from “the remote I/O informs the
microprocessor that there is incoming data or a change of data on its ports”
to “the remote I/O informs the microprocessor that there has been a change of data on
its ports”
• Added Section 10.2 “How to read and write to I/O expander (example)”
• Section 10.3 “High current-drive load applications”:
– first paragraph, first sentence changed from “maximum sinking current of 25 mA per
bit” to “minimum guaranteed sinking current of 25 mA per bit at 5 V”
– first paragraph, second sentence: deleted phrase “in the same octal”
– first paragraph, fourth sentence changed from “which is the device limit” to “which is
the device recommended total limit”
– first paragraph: added (new) fifth sentence
– Figure 21 “
High current-drive load application” modified: added resistors on P6 and P7
• Added Section 10.4 “Migration path”
• Table 7 “Limiting values”: added T
j(max)
limits
• Added Section 12 “Thermal characteristics”
• Table 9 “Static characteristics”, sub-section “I/Os; P0 to P7”:
– added V
IL
characteristic
– added V
IH
characteristic
– Table note [1]
re-written
Table 14. Revision history …continued
Document ID Release date Data sheet status Change notice Supersedes