PCA9671D,118 NXP Semiconductors, PCA9671D,118 Datasheet - Page 13

• Manufacturer Part Number: PCA9671D,118
• Description: IC I/O EXPANDER I2C 16B 24SOIC
• Manufacturer: NXP Semiconductors

Specifications of PCA9671D,118

• Interface: I²C
• Number Of I /o: 16
• Interrupt Output: No
• Frequency - Clock: 1MHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Includes: POR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-4192-2; 935283551118; PCA9671D-T

NXP Semiconductors
PCA9671
Product data sheet
Fig 16. Write mode (output)
SDA
SCL
data output from port
P05 output voltage
P05 pull-up ouput current
P16 output voltage
P16 pull-up ouput current
write to port
S A6
START condition
1
A5 A4 A3 A2 A1 A0 0
2
8.3 Reading from a port (Input mode)
slave address
3
4
All ports programmed as input should be set to logic 1. To read, the master
(microcontroller) first addresses the slave device after it receives the interrupt. By setting
the last bit of the byte containing the slave address to logic 1 the Read mode is entered.
The data bytes that follow on the SDA are the values on the ports.
If the data on the input port changes faster than the master can read, this data may be
lost.
5
6
7
R/W
8
9
A
acknowledge
from slave
All information provided in this document is subject to legal disclaimers.
07
P
06 1
P
data to port 0
P05
Rev. 2 — 29 July 2010
04
P
03
P
02
Remote 16-bit I/O expander for Fm+ I
P
01
P
I
trt(pu)
00
P
A
acknowledge
from slave
17
P
t
v(Q)
1
I
P16
OH
DATA A0 AND B0 VALID
15
P
data to port 1
14
P
13
P
12
P
11
I
P
trt(pu)
10
P
A
acknowledge
from slave
data A0 and B0 valid
PCA9671
t
© NXP B.V. 2010. All rights reserved.
2
v(Q)
C-bus with reset
I
OH
002aac250
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