參數(shù)資料
型號(hào): XRA1402IL16-0B-EB
廠商: Exar Corporation
文件頁(yè)數(shù): 1/14頁(yè)
文件大小: 0K
描述: GPIO EXPANDER EVAL BOARD
設(shè)計(jì)資源: XRA140x Eval Board (8-Bit) Schematics
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,GPIO 擴(kuò)展器
嵌入式:
已用 IC / 零件: XRA1402IL16
已供物品:
其它名稱: 1016-1743
XRA1402IL16-OB-EB
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
XRA1402
8-BIT SPI GPIO EXPANDER
SEPTEMBER 2011
REV. 1.0.0
GENERAL DESCRIPTION
The XRA1402 is an 8-bit GPIO expander with an SPI
interface. After power-up, the XRA1402 has internal
100K ohm pull-up resistors on each I/O pin that can
be individually enabled.
In addition, the GPIOs on the XRA1402 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 XRA1402 is available in 16-pin QFN and 16-pin
TSSOP packages.
FEATURES
1.65V to 3.6V operating voltage
8 General Purpose I/Os (GPIOs)
5V tolerant inputs
Maximum stand-by current of 1uA at +1.8V
SPI bus interface
SPI Clock Frequency up to 26MHz
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
Active-low reset input
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
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