PCA9698BS,118

PCA9698

All information provided in this document is subject to legal disclaimers.

© NXP B.V. 2010. All rights reserved.

Product data sheet

Rev. 3 — 3 August 2010 

7 of 48

NXP Semiconductors

PCA9698

40-bit Fm+ I

2

C-bus advanced I/O port with RESET, OE and INT

[1]

HVQFN56 package die supply ground is connected to both V

SS

 pins and exposed center pad. V

SS

 pins 

must be connected to supply ground for proper device operation. For enhanced thermal, 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 printed-circuit board in the thermal pad region.

7. Functional 

description

Refer to 

Figure 1 “Block diagram of PCA9698”

.

7.1 Device address

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 
PCA9698 is shown in 

Figure 5

. Slave address pins AD2, AD1 and AD0 choose 1 of 

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 12 “PCA9698 address map”

.

 

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.

AD2

29

22

input

address input 2

OE

30

23

input

active LOW output enable

INT/SMBALERT

55

48

output

active LOW interrupt output/ 
active LOW SMBus alert 
output

RESET

56

49

input

active LOW reset input

Table 2.

Pin description

 …continued

Symbol

Pin

Type

Description

TSSOP56

HVQFN56

Fig 5.

PCA9698 device address

R/W

002aab937

A6

A5

A4

A3

A2

A1

A0

programmable

slave address

PCA9698BS,118 Information:
Part No.
PCA9698BS,118

RFQ

Description
IC I/O EXPANDER I2C 40B 56HVQFN
File Size
370946 bytes
Page Size
595.22 x 842 pts (A4)
All Pages
48
Manufacturer
NXP Semiconductors
Homepage
http://www.nxp.com/
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