PCAL6408AHKX NXP Semiconductors, PCAL6408AHKX Datasheet - Page 17

• Manufacturer Part Number: PCAL6408AHKX
• Description: Interface - I/O Expanders 8bit I2C/SMBus IO Expander w/Interrupt
• Manufacturer: NXP Semiconductors

Specifications of PCAL6408AHKX

• Maximum Operating Frequency: 100 kHz
• Operating Supply Voltage: 1.65 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: XQFN-16
• Operating Current: 200 mA
• Output Current: 25 mA
• Product Type: I/O Expanders

NXP Semiconductors
PCAL6408A
Product data sheet
Fig 12. Read Input port register (latch enabled)
data into
port
INT
read from
Transfer of data can be stopped at any time by a STOP condition. When this occurs, data present at the latest acknowledge
phase is valid (output mode). It is assumed that the command byte has previously been programmed with 00h (read Input port
register).
This figure eliminates the command byte transfer, a restart, and slave address call between the initial slave address call and
actual data transfer from P port (see
SDA
port
SCL
S
START condition
t
v(INT)
1
0
2
1
slave address
3
DATA 1
0
4
0
5
0
6
0
7
AD
DR
t
h(D)
R/W
All information provided in this document is subject to legal disclaimers.
Figure
8
1
9
A
acknowledge from slave
10).
Rev. 2 — 6 December 2012
t
rst(INT)
Low-voltage translating, 8-bit I
data from port
DATA 2
DATA 1
t
su(D)
A
acknowledge from master
DATA 1
data from port
DATA 2
2
C-bus/SMBus I/O expander
PCAL6408A
© NXP B.V. 2012. All rights reserved.
1
no acknowledge
from master
INT is cleared by
read from port
STOP not needed
to clear INT
P
STOP
condition
002aah091
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