Datasheet

Product data sheet Rev. 7 — 30 May 2013 35 of 40

NXP Semiconductors

PCA9674; PCA9674A

Remote 8-bit I/O expander for Fm+ I

C-bus with interrupt

19. Abbreviations

20. Revision history

Table 13. Abbreviations

Acronym Description

CDM Charged-Device Model

ESD ElectroStatic Discharge

GPIO General Purpose Input/Output

HBM Human Body Model

LED Light Emitting Diode

IC Integrated Circuit

C-bus Inter-Integrated Circuit bus

ID Identification

LSB Least Significant Bit

MSB Most Significant Bit

PLC Programmable Logic Controller

PWM Pulse Width Modulation

SMBus System Management Bus

Table 14. Revision history

Document ID Release date Data sheet status Change notice Supersedes

PCA9674_PCA9674A v.7 20130530 Product data sheet - PCA9674_PCA9674A v.6

Modifications:

• Section 1 “General description” is re-written

• Section 2 “Features and benefits” is re-written

• Table 1 “Ordering information”: Topside mark for PCA9674APW is corrected

from “PA9674A” to “9674A”

• Added Section 4.1 “Ordering options”

• Figure 1 “Block diagram of PCA9674; PCA9674A” modified: swapped positions of blocks

“INTERRUPT LOGIC” and “LP FILTER”

• Figure 2 “Simplified schematic diagram of P0 to P7” modified: deleted diode between V

and (P0 to P7) signals

• Combined (old) Table 3, “Pin description for SO16, TSSOP16” and Table 4, “Pin

description for HVQFN16” into one table: Table 3 “

Pin description”

• Section 7.1 “Device address”:

– first paragraph is re-written

– last paragraph: inserted phrase “or the newer PCA8574 or PCA8574A”

• Section 7.1.1 “Address maps”: added (new) first paragraph

• Table 4 “PCA9674 address map” modified: added separate columns for Read and Write

addresses and column for 7-bit hexadecimal address

• Table 5 “PCA9674A address map” modified: added separate columns for Read and Write

addresses and column for 7-bit hexadecimal address

• Section 7.2.1 “Software Reset”: added paragraph following Figure 9