9534 Datasheet PDF - NXP Semiconductors
| Part Number | 9534 | |
| Description | 8-bit I2C and SMBus/ low power I/O port with interrupt | |
| Manufacturers | NXP Semiconductors | |
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There is a preview and 9534 download ( pdf file ) link at the bottom of this page. Total 17 Pages | ||
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INTEGRATED CIRCUITS
PCA9534
8-bit I2C and SMBus, low power I/O port
with interrupt
Product data sheet
Supersedes data of 2003 Dec 02
2004 Sep 30
Philips
Semiconductors
|
| |
 
Philips Semiconductors
8-bit I2C and SMBus low power I/O port with interrupt
Product data sheet
PCA9534
SIMPLIFIED SCHEMATIC OF I/O0 TO I/O7
DATA FROM
SHIFT REGISTER
DATA FROM
SHIFT REGISTER
WRITE
CONFIGURATION
PULSE
WRITE PULSE
CONFIGURATION
REGISTER
DQ
FF
CK Q
DQ
FF
CK Q
OUTPUT
PORT
REGISTER
READ PULSE
Q1
INPUT PORT
REGISTER
DQ
FF
CK Q
Q2
DATA FROM
SHIFT REGISTER
WRITE
POLARITY
PULSE
DQ
FF
CK Q
POLARITY
INVERSION
REGISTER
NOTE: At Power-on Reset, all registers return to default values.
Figure 4. Simplified schematic of I/O0 to I/O7
I/O port
When an I/O is configured as an input, FETs Q1 and Q2 are off,
creating a high impedance input. The input voltage may be raised
above VDD to a maximum of 5.5 V.
If the I/O is configured as an output, then either Q1 or Q2 is enabled,
depending on the state of the output port register. Care should be
exercised if an external voltage is applied to an I/O configured as an
output because of the low impedance paths that exist between the
pin and either VDD or VSS.
OUTPUT PORT
REGISTER DATA
VDD
ESD PROTECTION DIODE
I/O0 TO I/O7
ESD PROTECTION DIODE
VSS
INPUT PORT
REGISTER DATA
TO INT
POLARITY
REGISTER DATA
SU01784
2004 Sep 30
5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for 9534 electronic component. |
| Information | Total 17 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ 9534.PDF Datasheet ] | |
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