The XRA1200/1200P is an 8-bit GPIO expander with an I²C/SMBus interface. After power-up, the XRA1200 has internal 100K ohm pull-up resistors on each I/O pin that can be individually enabled. The XRA1200P have 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 XRA1200/1200P 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 XRA1200 are enhanced versions of other 8-bit GPIO expanders with an I²C/SMBus interface. The XRA1200 is pin and software compatible with the CAT9534 and PCA9534. The XRA1200/1200P are also pin compatible with the PCA9554A and TCA9554A.
The XRA1200/1200P are available in 16-pin QFN and 16-pin TSSOP packages.
For technical support or to obtain an IBIS model for this product, please email Exar's UART Technical Support group.
- 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
- 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
- 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 CAT9534 and PCA9534
- 3kV HBM ESD protection per JESD22-A114F
- 200mA latch-up performance per JESD78B
- Personal Digital Assistant (PDA)
- Cellular phones/data devices
- Battery-operated devices
- Global Positioning System (GPS)
Parts & Purchasing
|Part Number||Pkg Code||RoHS||Min Temp||Max Temp||Status||Buy Now||Order Samples|
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Frequently Asked Questions
In this example, we looked for XRA1201. When you hover over it, it will turn grey and you can click anywhere in the grey box. This brings you to the product page. For example:
Click on Parts & Purchasing, highlighted in yellow above. The screen changes to:
Notice the status column and the “Show obsolete parts” link:
A legend tells you the definition of the different statuses. Click on the “Show obsolete parts” link to see EOL or OBS part numbers along with the Active part numbers:
Another method to find out if a part is OBS or EOL is to click on SUPPORT:
And then Product Change Notifications
Type the part into the search, and click on one of the part numbers from the drop down menu. Then you can look for the Product Discontinuation Notice, which generally is at the top of the list, for example:
If you see this, it tells you that this particular orderable part has been discontinued and when the last order date is, or was. If you click on the file, then you can view the notice we sent about this if you purchased the part in the recent past. It may also advise of a replacement part. When an orderable part first becomes discontinued, Product Discontinuation Notices are sent are sent to those who have purchased the parts in the recent past, if purchased directly, with a dated opportunity to place a last order.