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XRA1201P Datasheet Preview

XRA1201P Datasheet

16-BIT I2C/SMBUS GPIO EXPANDER

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XRA1201/1201P
16-BIT I2C/SMBUS GPIO EXPANDER
SEPTEMBER 2011
REV. 1.0.0
GENERAL DESCRIPTION
The XRA1201/1201P is a 16-bit GPIO expander with
an I2C/SMBus interface. After power-up, the
XRA1201 has internal 100K ohm pull-up resistors on
each I/O pin that can be individually enabled. The
XRA1201P has the internal pull-up resistors enabled
upon power-up in case it is necessary for the inputs
to be in a known state.
In addition, the GPIOs on the XRA1201/1201P can
individually be controlled and configured. As outputs,
the GPIOs can be outputs that are high, low or in
three-state mode. The three-state mode feature is
useful for applications where the power is removed
from the remote devices, but they may still be
connected to the GPIO expander.
As inputs, the internal pull-up resistors can be
enabled or disabled and the input polarity can be
inverted. The interrupt can be programmed for
different behaviors. The interrupts can be
programmed to generate an interrupt on the rising
edge, falling edge or on both edges. The interrupt
can be cleared if the input changes back to its original
state or by reading the current state of the inputs.
The XRA1201/1201P are enhanced versions of other
16-bit GPIO expanders with an I2C/SMBus interface.
The XRA1201 is pin and software compatible with the
PCA9535, TCA9535 and MAX7312. The XRA1201P
is pin and software compatible with the CAT9555,
PCA9555, TCA9555, MAX7311 and MAX7318.
The XRA1201/1201P are available in 24-pin QFN
and 24-pin TSSOP packages.
FEATURES
1.65V to 3.6V operating voltage
16 General Purpose I/Os (GPIOs)
5V tolerant inputs
Maximum stand-by current of 1uA at +1.8V
I2C/SMBus bus interface
I2C clock frequency up to 400kHz
Noise filter on SDA and SCL inputs
Up to 32 I2C Slave Addresses
Individually programmable inputs
Internal pull-up resistors
Polarity inversion
Individual interrupt enable
Rising edge and/or Falling edge interrupt
Input filter
Individually programmable outputs
Output Level Control
Output Three-State Control
Open-drain active low interrupt output
Pin and software compatible with PCA9535,
TCA9535, MAX7312 (XRA1201)
Pin and software compatible with CAT9555,
PCA9555, TCA9555, MAX7311 and MAX7318
(XRA1201P)
3kV HBM ESD protection per JESD22-A114F
200mA latch-up performance per JESD78B
APPLICATIONS
Personal Digital Assistants (PDA)
Cellular Phones/Data Devices
Battery-Operated Devices
Global Positioning System (GPS)
Bluetooth
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com




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XRA1201P Datasheet Preview

XRA1201P Datasheet

16-BIT I2C/SMBUS GPIO EXPANDER

No Preview Available !

XRA1201/1201P
16-BIT I2C/SMBUS GPIO EXPANDER
FIGURE 1. XRA1201 BLOCK DIAGRAM
REV. 1.0.0
VCC
SCL
SDA
A2
A1
A0
IRQ #
GND
(1.65V – 3.6V)
I2C /
SMBus
Interface
G PIO
C ontrol
R egisters
G PIO s
G PIO s
P0
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
ORDERING INFORMATION
PART NUMBER
XRA1201IL24-F
XRA1201IL24TR-F
XRA1201PIL24-F
XRA1201PIL24TR-F
XRA1201IG24-F
XRA1201IG24TR-F
XRA1201PIG24-F
XRA1201PIG24TR-F
PACKAGE
QFN-24
QFN-24
QFN-24
QFN-24
TSSOP-24
TSSOP-24
TSSOP-24
TSSOP-24
NUMBER OF
GPIOS
16
16
16
16
16
16
16
16
NOTE: TR = Tape and Reel, F = Green / RoHS
FIGURE 2. PIN OUT ASSIGNMENTS
OPERATING TEMPERATURE
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
DEVICE STATUS
Active
Active
Active
Active
Active
Active
Active
Active
24 23 22 21 20 19
P0 1
18 A0
P1 2
P2 3
P3 4
XRA1201/
XRA1201P
24-Pin QFN
17 P15
16 P14
15 P13
P4 5
14 P12
P5 6
13 P11
7 8 9 10 11 12
IRQ# 1
A1 2
A2 3
P0 4
P1 5
P2 6
P3 7
P4 8
P5 9
P6 10
P7 11
GND 12
XRA1201/
XRA1201P
24-Pin
TSSOP
24 VCC
23 SDA
22 SCL
21 A0
20 P15
19 P14
18 P13
17 P12
16 P11
15 P10
14 P9
13 P8
2


Part Number XRA1201P
Description 16-BIT I2C/SMBUS GPIO EXPANDER
Maker Exar
Total Page 17 Pages
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