XRA1207 16-BIT I2C/SMBUS GPIO EXPANDER WITH INTEGRATED LEVEL SHIFTERS SEPTEMBER 2011 REV. 1.0.0 FEATURES GENERAL DESCRIPTION 1.65V to 3.6V operating voltage 2 The XRA1207 is a 16-bit GPIO expander with an I C/ SMBus interface. After power-up, the XRA1207 has Integrated Level Shifters internal 100K ohm pull-up resistors on each I/O pin 16 General Purpose I/Os (GPIOs) that can be individually enabled. 5V tolerant inputs In addition, the GPIOs on the XRA1207 can individually be controlled and configured. As outputs, Maximum stand-by current of 1uA at +1.8V the GPIOs can be outputs that are high, low or in 2 I C/SMBus bus interface three-state mode. The three-state mode feature is 2 useful for applications where the power is removed I C clock frequency up to 400kHz from the remote devices, but they may still be Noise filter on SDA and SCL inputs connected to the GPIO expander. 2 Up to 4 I C Slave Addresses As inputs, the internal pull-up resistors can be Individually programmable inputs enabled or disabled and the input polarity can be inverted. The interrupt can be programmed for Internal pull-up resistors different behaviors. The interrupts can be Polarity inversion programmed to generate an interrupt on the rising Individual interrupt enable edge, falling edge or on both edges. The interrupt can be cleared if the input changes back to its original Rising edge and/or Falling edge interrupt state or by reading the current state of the inputs. Input filter The XRA1207 is an enhanced version of the Individually programmable outputs TCA6416. The XRA1207 is pin and software Output Level Control compatible with the TCA6416. Output Three-State Control The XRA1207 is available in 24-pin QFN and 24-pin Open-drain active low interrupt output TSSOP packages. Active-low reset input Pin and software compatible with TCA6416 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 XRA1207 16-BIT I2C/SMBUS GPIO EXPANDER WITH INTEGRATED LEVEL SHIFTERS REV. 1.0.0 FIGURE 1. XRA1207 BLOCK DIAGRAM VCCP (1.65V 3.6V) VCC (1.65V 3.6V) P0 P1 P2 P3 GPIOs P4 P5 SCL P6 SDA P7 2 I C/ GPIO Integrated SMBus Control Level A0 Interface Registers Shifters P8 RESET P9 IRQ P10 P11 GPIOs P12 P13 P14 P15 GND ORDERING INFORMATION NUMBER OF OPERATING TEMPERATURE PART NUMBER PACKAGE DEVICE STATUS GPIOS RANGE XRA1207IL24-F QFN-24 16 -40C to +85C Active XRA1207IL24TR-F QFN-24 16 -40C to +85C Active XRA1207IG24-F TSSOP-24 16 -40C to +85C Active XRA1207IG24TR-F TSSOP-24 16 -40C to +85C Active NOTE: TR = Tape and Reel, F = Green / RoHS FIGURE 2. PIN OUT ASSIGNMENTS IRQ 1 24 VCCP VCC 2 23 SDA RESET 3 22 SCL 24 23 22 21 20 19 P0 4 21 A0 P0 1 18 A0 P1 5 20 P15 P1 2 17 P15 XRA1207 XRA1207 P2 3 16 P14 6 P2 19 P14 24-Pin 24-Pin QFN P3 4 15 P13 TSSOP P3 7 18 P13 P12 P4 5 14 P4 8 17 P12 6 13 P11 P5 7 8 9 101112 P5 9 16 P11 P6 10 15 P10 P7 11 14 P9 GND 12 13 P8 2 P6 RESET P7 VCC GND IRQ P8 VCCP P9 SDA P10 SCL