XRA1200/1200P 8-BIT I2C/SMBUS GPIO EXPANDER SEPTEMBER 2011 REV. 1.0.0 FEATURES GENERAL DESCRIPTION 1.65V to 3.6V operating voltage The XRA1200/1200P is an 8-bit GPIO expander with 2 an IC/SMBus interface. After power-up, the 8 General Purpose I/Os (GPIOs) XRA1200 has internal 100K ohm pull-up resistors on 5V tolerant inputs each I/O pin that can be individually enabled. The XRA1200P have the internal pull-up resistors Maximum stand-by current of 1uA at +1.8V enabled upon power-up in case it is necessary for the 2 I C/SMBus bus interface inputs to be in a known state. 2 I C clock frequency up to 400kHz In addition, the GPIOs on the XRA1200/1200P can individually be controlled and configured. As outputs, Noise filter on SDA and SCL inputs the GPIOs can be outputs that are high, low or in 2 Up to 32 I C Slave Addresses three-state mode. The three-state mode feature is Individually programmable inputs useful for applications where the power is removed from the remote devices, but they may still be Internal pull-up resistors connected to the GPIO expander. Polarity inversion As inputs, the internal pull-up resistors can be Individual interrupt enable enabled or disabled and the input polarity can be Rising edge and/or Falling edge interrupt inverted. The interrupt can be programmed for Input filter different behaviors. The interrupts can be programmed to generate an interrupt on the rising Individually programmable outputs edge, falling edge or on both edges. The interrupt Output Level Control can be cleared if the input changes back to its original Output Three-State Control state or by reading the current state of the inputs. Open-drain active low interrupt output The XRA1200/1200P are enhanced versions of other 2 8-bit GPIO expanders with an I C/SMBus interface. Pin and software compatible with CAT9534, The XRA1200 is pin and software compatible with the CAT9554, PCA9534, and PCA9554 CAT9534 and PCA9534. The XRA1200P is pin and 3kV HBM ESD protection per JESD22-A114F software compatible with the CAT9554 and PCA9554. The XRA1200/1200P are also pin 200mA latch-up performance per JESD78B compatible with the PCA9554A and TCA9554A. APPLICATIONS The XRA1200/1200P are available in 16-pin QFN Personal Digital Assistants (PDA) and 16-pin TSSOP packages. 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 XRA1200/1200P 8-BIT I2C/SMBUS GPIO EXPANDER REV. 1.0.0 FIGURE 1. XRA1200 BLOCK DIAGRAM VCC (1.65V 3.6V) SCL P0 SDA P1 P2 2 I C/ GPIO P3 A2 SMBus Control GPIOs P4 A1 Interface Registers P5 A0 P6 P7 IRQ GND ORDERING INFORMATION NUMBER OF OPERATING TEMPERATURE PART NUMBER PACKAGE DEVICE STATUS GPIOS RANGE XRA1200IL16-F QFN-16 8 -40C to +85C Active XRA1200IL16TR-F QFN-16 8 -40C to +85C Active XRA1200PIL16-F QFN-16 8 -40C to +85C Active XRA1200PIL16TR-F QFN-16 8 -40C to +85C Active XRA1200IG16-F TSSOP-16 8 -40C to +85C Active XRA1200IG16TR-F TSSOP-16 8 -40C to +85C Active XRA1200PIG16-F TSSOP-16 8 -40C to +85C Active XRA1200PIG16TR-F TSSOP-16 8 -40C to +85C Active NOTE: TR = Tape and Reel, F = Green / RoHS FIGURE 2. PIN OUT ASSIGNMENTS A0 1 16 VCC A1 2 15 SDA 16 15 14 13 12 SCL A2 1 A2 3 14 SCL XRA1200/ 11 IRQ P0 2 XRA1200/ P0 4 13 IRQ XRA1200P XRA1200P 10 P7 16-Pin QFN P1 3 5 P1 16-Pin TSSOP 12 P7 9 P6 4 P2 P2 6 11 P6 56 78 P3 7 10 P5 GND 8 9 P4 2 P3 A1 GND A0 P4 VCC P5 SDA