Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

TCA9554 Fiches technique(PDF) 8 Page - Texas Instruments

Click here to check the latest version.
No de pièce TCA9554
Description  LOW VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS
Download  31 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TCA9554 Fiches technique(HTML) 8 Page - Texas Instruments

Back Button TCA9554 Datasheet HTML 4Page - Texas Instruments TCA9554 Datasheet HTML 5Page - Texas Instruments TCA9554 Datasheet HTML 6Page - Texas Instruments TCA9554 Datasheet HTML 7Page - Texas Instruments TCA9554 Datasheet HTML 8Page - Texas Instruments TCA9554 Datasheet HTML 9Page - Texas Instruments TCA9554 Datasheet HTML 10Page - Texas Instruments TCA9554 Datasheet HTML 11Page - Texas Instruments TCA9554 Datasheet HTML 12Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 31 page
background image
SCL
Start Condition
Data 1 Valid
SDA
Write to Port
Data Out
From Port
R/W ACK From Slave
ACK From Slave
ACK From Slave
1
9
8
7
6
5
4
3
2
Data 1
1
A2
0
1
S
0
0
A1 A0
0
A
0
0
0
0
0
0
0
A
A
P
tpv
Data to Port
Command Byte
Slave Address
SCL
SDA
Data to
Register
Start Condition
R/W
ACK From Slave
ACK From Slave
ACK From Slave
1
9
8
7
6
5
4
3
2
Data
1/0
A2
0
1
S
0
0
A1 A0
0
A
1
0
0
0
0
0
0
A
A
P
Data to Register
Command Byte
Slave Address
TCA9554
SCPS233A – NOVEMBER 2011 – REVISED MARCH 2012
www.ti.com
Interrupt Output (INT)
An interrupt is generated by any rising or falling edge of the port inputs in the input mode. After time, tiv, the
signal INT is valid. Resetting the interrupt circuit is achieved when data on the port is changed to the original
setting; data is read from the port that generated the interrupt. Resetting occurs in the read mode at the
acknowledge (ACK) bit or not acknowledge (NACK) bit after the rising edge of the SCL signal. Interrupts that
occur during the ACK or NACK clock pulse can be lost (or be very short) due to the resetting of the interrupt
during this pulse. Each change of the I/Os after resetting is detected and is transmitted as INT.
Reading from or writing to another device does not affect the interrupt circuit, and a pin configured as an output
cannot cause an interrupt. Changing an I/O from an output to an input may cause a false interrupt to occur if the
state of the pin does not match the contents of the Input Port register.
INT has an open-drain structure and requires a pullup resistor to VCC.
Bus Transactions
Data is exchanged between the master and TCA9554 through write and read commands.
Writes
Data is transmitted to the TCA9554 by sending the device address and setting the least-significant bit to a logic 0
(see Figure 6 for device address). The command byte is sent after the address and determines which register
receives the data that follows the command byte (see Figure 8 and Figure 9). There is no limitation on the
number of data bytes sent in one write transmission.
Figure 8. Write to Output Port Register
<br/>
Figure 9. Write to Configuration or Polarity Inversion Registers
8
Submit Documentation Feedback
Copyright © 2011–2012, Texas Instruments Incorporated
Product Folder Link(s): TCA9554


Numéro de pièce similaire - TCA9554

FabricantNo de pièceFiches techniqueDescription
logo
Texas Instruments
TCA9554 TI1-TCA9554 Datasheet
1Mb / 38P
[Old version datasheet]   TCA9554 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers
TCA9554 TI1-TCA9554 Datasheet
1Mb / 39P
[Old version datasheet]   Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers
TCA9554A TI-TCA9554A Datasheet
506Kb / 33P
[Old version datasheet]   LOW VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER
TCA9554A TI1-TCA9554A Datasheet
1Mb / 38P
[Old version datasheet]   TCA9554A Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers
TCA9554A TI1-TCA9554A Datasheet
1Mb / 39P
[Old version datasheet]   Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers
More results

Description similaire - TCA9554

FabricantNo de pièceFiches techniqueDescription
logo
Texas Instruments
TCA6408A TI1-TCA6408A Datasheet
932Kb / 35P
[Old version datasheet]   LOW-VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
TCA6408 TI-TCA6408 Datasheet
841Kb / 30P
[Old version datasheet]   LOW-VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
TCA6408 TI-TCA6408_09 Datasheet
927Kb / 31P
[Old version datasheet]   LOW-VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
PCA9554DW TI-PCA9554DW Datasheet
933Kb / 36P
[Old version datasheet]   REMOTE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS
PCA9554A TI-PCA9554A Datasheet
650Kb / 33P
[Old version datasheet]   REMOTE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS
TCA9534 TI1-TCA9534 Datasheet
935Kb / 34P
[Old version datasheet]   Low Voltage 8-Bit I2C and SMBUS Low-Power I/O Expander With Interrupt Output and Configuration Registers
TCA9555 TI1-TCA9555_16 Datasheet
1Mb / 46P
[Old version datasheet]   Low-Voltage 16-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers
TCA9555 TI-TCA9555 Datasheet
734Kb / 32P
[Old version datasheet]   LOW VOLTAGE 16-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS
TCA9534A TI1-TCA9534A Datasheet
935Kb / 34P
[Old version datasheet]   Low Voltage 8-Bit I2C and SMBUS Low-Power I/O Expander With Interrupt Output and Configuration Registers
TCA9534 TI1-TCA9534_16 Datasheet
1Mb / 38P
[Old version datasheet]   Low Voltage 8-Bit I2C and SMBUS Low-Power I/O Expander with Interrupt Output and Configuration Registers
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com