CAT9554 CATALYST [Catalyst Semiconductor], CAT9554 Datasheet

no-image

CAT9554

Manufacturer Part Number
CAT9554
Description
8-bit I2C and SMBus I/O Port with Interrupt
Manufacturer
CATALYST [Catalyst Semiconductor]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CAT9554AWI-GT2
Manufacturer:
ON Semiconductor
Quantity:
1 200
Part Number:
CAT9554AYI-GT2
Manufacturer:
ON
Quantity:
1 066
Part Number:
CAT9554HV4I-GT2
Manufacturer:
ON/安森美
Quantity:
20 000
Part Number:
CAT9554WI-GT2
Manufacturer:
ON
Quantity:
2 969
Part Number:
CAT9554YI-GT2
Manufacturer:
ON
Quantity:
663
Part Number:
CAT9554YI-GT2
Manufacturer:
TI
Quantity:
80
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT9554, CAT9554A
8-bit I
FEATURES
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
APPLICATIONS
I
I
I
BLOCK DIAGRAM
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I
400kHz I
2.3V to 5.5V operation
Low stand-by current
5V tolerant I/Os
8 I/O pins that default to inputs at power-up
High drive capability
Individual I/O configuration
Polarity inversion register
Active low interrupt output
Internal power-on reset
No glitch on power-up
Noise filter on SDA/SCL inputs
Cascadable up to 8 devices
Industrial temperature range
RoHS-compliant 16-lead SOIC and TSSOP, and
16-pad TQFN (4 x 4 mm) packages
White goods (dishwashers, washing machines)
Handheld devices (cell phones, PDAs, digital
cameras)
Data Communications (routers, hubs and
servers)
2
V CC
V SS
C and SMBus I/O Port with Interrupt
SDA
SCL
A0
A1
A2
2
C bus compatible*
NOTE: ALL I/Os ARE SET TO INPUTS AT RESET
FILTER
INPUT
POWER-ON
RESET
I 2 C/SMBUS
CONTROL
1
2
C Bus Protocol.
DESCRIPTION
The CAT9554 and CAT9554A are CMOS devices that
provide 8-bit parallel input/output port expansion for I
and SMBus compatible applications. These I/O
expanders provide a simple solution in applications
where additional I/Os are needed: sensors, power
switches, LEDs, pushbuttons, and fans.
The CAT9554/9554A consist of an input port register, an
output port register, a configuration register, a polarity
inversion register and an I
interface.
Any of the eight I/Os can be configured as an input or
output by writing to the configuration register. The system
master can invert the CAT9554/9554A input data by
writing to the active-high polarity inversion register.
The CAT9554/9554A features an active low interrupt
output which indicates to the system master that an input
state has changed.
The device’s extended addressing capability allows up
to 8 devices to share the same bus. The CAT9554A is
identical to the CAT9554 except the fixed part of the I
slave address is different. This allows up to 16 of devices
(eight CAT9554 and eight CAT9554A) to be connected
on the same bus.
For Ordering Information details, see page 15.
WRITE pulse
READ pulse
8-BIT
OUTPUT
INPUT/
PORTS
FILTER
LP
2
C/SMBus-compatible serial
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
V CC
Doc. No. 25088, Rev. B
INT
2
2
C
C

Related parts for CAT9554

CAT9554 Summary of contents

Page 1

... The device’s extended addressing capability allows devices to share the same bus. The CAT9554A is identical to the CAT9554 except the fixed part of the I slave address is different. This allows devices (eight CAT9554 and eight CAT9554A connected on the same bus ...

Page 2

... CAT9554, CAT9554A PIN CONFIGURATION SOIC (W) TSSOP ( SDA SCL I/ INT 5 12 I/O1 I/ I/O2 I/ I/O4 PIN DESCRIPTION ...

Page 3

... CAT9554, CAT9554A — — µ A — µ A — µ ...

Page 4

... CAT9554, CAT9554A A.C. CHARACTERISTICS V = 2.3V to 5.5V -40°C to +85°C, unless otherwise specified ...

Page 5

... HIGH LOW t HD:DAT t SU:DAT Figure 1. 2-Wire Serial Interface Timing 5 CAT9554, CAT9554A SU:STO t BUF Doc. No. 25088, Rev. B ...

Page 6

... These inputs are used for extended addressing capability. The When hardwired eight CAT9554/9554As may be addressed on a single bus system. The levels on these inputs are compared with corresponding bits, A from the slave address byte. I/O to I/O : Input / Output Ports 0 7 Any of these pins may be configured as input or output. ...

Page 7

... Output Port Register Input Port Register D Q LATCH Polarity Inversion Register to I CAT9554, CAT9554A Output Port Register Data V CC I Input Port Register Data To INT Polarity Register Data 7 Doc. No. 25088, Rev. B ...

Page 8

... CAT9554/9554A for a read or write operation. The four most significant bits of the slave address are fixed as binary 0100 for the CAT9554 (Figure 6) and as 0111 for the CAT9554A (Figure 7). The CAT9554/9554A uses the next three bits as address bits. ...

Page 9

... CAT9554/9554A to the standby power mode and place the device in a known state. Registers and Bus Transactions The CAT9554/9554A consist of an input port register, an output port register, a polarity inversion register and a configuration register. Table 1 shows the register address table. Tables list Register 0 through Register 3 information ...

Page 10

... V Data is transmitted to the CAT9554/9554A registers using the write mode shown in Figure 9 and Figure 10. The CAT9554/9554A registers are read according to the timing diagrams shown in Figure 11 and Figure 12. Once a command byte has been sent, the register which was addressed will continue to be accessed by reads until a new command byte will be sent ...

Page 11

... Power-On Reset Operation When the power supply is applied to V power-on reset pulse holds the CAT9554/9554A in a reset state until V reaches V level. At this point, the CC POR slave address R COMMAND BYTE acknowledge from slave SCL ...

Page 12

... CAT9554, CAT9554A PACKAGE DRAWINGS 16-LEAD 150 MIL WIDE SOIC ( SYMBOL MIN NOM A1 0.10 A 1.35 b 0.33 C 0.17 D 9.80 9.90 E 5.80 6.00 E1 3.80 3.90 e 1.27 BSC h 0.25 L 0.40 θ 1 0° Notes: 1. All dimensions are in millimeters. 2. Complies with JEDEC specification MS-013. Doc. No. 25088, Rev θ1 A1 MAX 0.25 1.75 0.51 0.25 10.00 6.20 4.00 0.50 1.27 8° ...

Page 13

... BSC L 0.45 0.60 L1 1.00 REF θ 1 0.00 Notes: 1. All dimensions are in millimeters. 2. Complies with JEDEC specification MO-153. © 2006 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice SEE DETAIL GAGE PLANE A1 0.25 MAX 1.20 0.15 1.05 0.30 0.20 5.10 4.50 0.75 8.00 13 CAT9554, CAT9554A C θ DETAIL "A" Doc. No. 25088, Rev. B ...

Page 14

... CAT9554, CAT9554A PACKAGE DRAWINGS 16-PAD TQFN ( mm) (HV4 ...

Page 15

... The standard lead finish is NiPdAu pre-plated on SOIC and TSSOP packages and Matte-Tin on TQFN packages. (3) The device used in the above example is a CAT9554WI-GT2 (SOIC, Industrial Temperature, NiPdAu, Tape & Reel). (4) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office. ...

Page 16

REVISION HISTORY Date Rev. 07/08/2005 A 06/28/2006 B Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: DPP ™ ™ MiniPot™ Catalyst Semiconductor has been issued U.S. and foreign patents and ...

Related keywords