pca9698 NXP Semiconductors, pca9698 Datasheet - Page 7

• Manufacturer Part Number: pca9698
• Description: 40-bit Fm+ I2c-bus Advanced I/o Port With Reset, Oe And Int
• Manufacturer: NXP Semiconductors

Philips Semiconductors
7. Functional description
PCA9698_2
Product data sheet
7.1 Device address
Table 2.
[1]
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
PCA9698 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 12 “PCA9698 address
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.
Symbol
AD2
OE
INT/SMBALERT
RESET
Fig 5. PCA9698 device address
HVQFN package die supply ground is connected to both V
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.
Figure 1 “Block diagram of
Pin description
Pin
TSSOP
29
30
55
56
Figure
40-bit Fm+ I
Rev. 02 — 19 July 2006
…continued
map”.
5. Slave address pins AD2, AD1 and AD0 choose 1 of
A6
HVQFN
22
23
48
49
A5
PCA9698”.
2
C-bus advanced I/O port with RESET, OE and INT
programmable
slave address
A4
A3
A2
Type
input
input
output
input
A1
SS
002aab937
pins and exposed center pad. V
A0
R/W
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Description
address input 2
active LOW output enable
active LOW interrupt
output/
active LOW SMBus alert
output
active LOW reset input
PCA9698
SS
pins must
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