XRA1402IG16TR-F

XRA1402 8-Bit SPI GPIO Expander February 2, 2022 Rev. 1.0.2 GENERAL DESCRIPTION FEATURES 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.  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 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.   Individually programmable inputs  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.     version available, QFN-16 Internal pull-up resistors Polarity inversion Individual interrupt enable Rising edge and/or Falling edge interrupt Input filter  Individually programmable outputs  The XRA1402 is available in 16-pin QFN and 16-pin TSSOP packages. TSSOP-16 obsolete SPI Clock Frequency up to 26MHz  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 version APPLICATIONS  Personal Digital Assistants (PDA)  Cellular Phones/Data Devices  Battery-Operated Devices  Global Positioning System (GPS)  Bluetooth 1 XRA1402 8-Bit SPI GPIO Expander FIGURE 1. XRA1402 BLOCK DIAGRAM VCC (1.65V – 3.6V) P0 P1 P2 P3 P4 P5 P6 P7 CS# SCL GPIO Control Registers SPI Bus Interface SI SO GPIOs RESET# IRQ# GND ORDERING INFORMATION PART NUMBER NUMBER OF GPIOS OPERATING TEMPERATURE RANGE PACKAGE PACKAGE METHOD LEAD FREE XRA1402IG16TR-F 8 -40°C to +85°C TSSOP-16 Tape and Reel Yes XRA1402IG16-0B-EB XRA1402 Evaluation Board NOTE: For more information about part numbers, as well as the most up-to-date ordering information and additional information on environment rating, go to www.maxlinear.com/XRA1402. 1 P0 2 SO 16 15 14 13 SI 2 12 SCL P1 XRA1402 11 IRQ# 16-Pin QFN 10 P7 3 P2 4 16 VCC 15 SO 14 SCL RESET# 3 P0 4 P1 5 9 P6 P5 P4 GND 5 6 7 8 P3 224DSR00 VCC CS# 1 SI RESET# CS# FIGURE 2. PIN OUT ASSIGNMENTS - XRA1402 TSSOP-16 VERSION AVAILABLE, QFN-16 VERSION OBSOLETE 13 IRQ# 12 P7 P2 6 11 P6 P3 7 10 P5 GND 8 2 XRA1402 16-Pin TSSOP 9 P4 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander PIN DESCRIPTIONS Pin Description TSSOP-16 version available, QFN-16 version obsolete NAME QFN-16 TSSOP-16 TYPE PIN# PIN# DESCRIPTION SPI INTERFACE SO 13 15 O SPI serial data output. SCL 12 14 I SPI bus serial input clock. IRQ# 11 13 OD CS# 15 1 I SPI bus chip select. SI 16 2 I SPI serial data input. RESET# 1 3 I Reset (active LOW) - A longer than 40 ns LOW pulse on this pin will reset the internal registers and all GPIOs will be configured as inputs. 2 3 4 5 7 8 9 10 4 5 6 7 9 10 11 12 I/O I/O I/O I/O I/O I/O I/O I/O General purpose I/Os P0-P7. All GPIOs are configured as inputs upon powerup or after a reset. Interrupt output (open-drain, active LOW). GPIOs P0 P1 P2 P3 P4 P5 P6 P7 ANCILLARY SIGNALS VCC 14 16 Pwr 1.65V to 3.6V VCC supply voltage. GND 6 8 Pwr Power supply common, ground. GND Center Pad - Pwr The exposed pad at the bottom surface of the package is designed for thermal performance. Use of a center pad on the PCB is strongly recommended for thermal conductivity as well as to provide mechanical stability of the package on the PCB. The center pad is recommended to be solder masked defined with opening size less than or equal to the exposed thermal pad on the package bottom to prevent solder bridging to the outer leads of the device. Thermal vias must be connected to GND plane as the thermal pad of package is at GND potential. Pin type: I=Input, O=Output, I/O= Input/output, OD=Output Open Drain. 224DSR00 3 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander 1.0 1.1 FUNCTIONAL DESCRIPTIONS SPI bus Interface The SPI interface consists of four lines: serial clock (SCL), chip select (CS#), slave output (SO) and slave input (SI). The serial clock, slave output and slave input can be as fast as 26 MHz. To access the device in the SPI mode, the CS# signal is asserted by the SPI master, then the SPI master starts toggling the SCL signal with the appropriate transaction information. The first bit sent by the SPI master includes whether it is a read or write transaction and the register being accessed. See Table 1 below. TABLE 1: SPI COMMAND BYTE FORMAT BIT FUNCTION 7 Read/Write# Logic 1 = Read Logic 0 = Write 6:1 Command Byte 0 Reserved FIGURE 3. SPI WRITE SCL SI 0 0 0 A3 A2 A1 A0 X 1 0 0 A3 A2 A1 A0 X D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 FIGURE 4. SPI READ SC L SI SO After the last read or write transaction, the SPI master will set the SCL signal back to its idle state (LOW). 224DSR00 4 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander 1.1.1 SPI Command Byte An SPI command byte is sent by the SPI master following the slave address. The command byte indicates the address offset of the register that will be accessed. Table 2 below lists the command bytes for each register. TABLE 2: COMMAND BYTE (REGISTER ADDRESS) COMMAND BYTE 1.2 REGISTER NAME DESCRIPTION READ/WRITE DEFAULT VALUES 0x00 GSR - GPIO State Read-Only 0xXX 0x01 OCR - Output Control Read/Write 0xFF 0x02 PIR - Input Polarity Inversion Read/Write 0x00 0x03 GCR - GPIO Configuration Read/Write 0xFF 0x04 PUR - Input Internal Pull-up Resistor Enable/Disable Read/Write 0x00 0x05 IER - Input Interrupt Enable Read/Write 0x00 0x06 TSCR - Output Three-State Control Read/Write 0x00 0x07 ISR - Input Interrupt Status Read 0x00 0x08 REIR - Input Rising Edge Interrupt Enable Read/Write 0x00 0x09 FEIR - Input Falling Edge Interrupt Enable Read/Write 0x00 0x0A IFR - Input Filter Enable/Disable Read/Write 0xFF Interrupts The table below summarizes the interrupt behavior of the different register settings for the XRA1402. TABLE 3: INTERRUPT GENERATION AND CLEARING GCR IER REIR FEIR IFR BIT BIT BIT BIT BIT 1 1 1 1 0 1 1 1 X 0 1 0 X 0 0 1 INTERRUPT GENERATED BY: X No interrupts enabled (default) N/A 0 A rising or falling edge on the input 1 A rising or falling edge on the input and remains in the new state for more than 1075ns Reading the GSR register or if the input changes back to its previous state (state of input during last read to GSR) 0 A rising edge on the input 1 A rising edge on the input and remains high for more than 1075ns 0 A falling edge on the input 1 A falling edge on the input and remains low for more than 1075ns 0 A rising or falling edge on the input Reading the GSR register Reading the GSR register 1 1 1 1 1 A rising or falling edge on the input and remains in the new state for more than 1075ns 0 x x x x No interrupts in output mode 224DSR00 INTERRUPT CLEARED BY: 5 Reading the GSR register N/A Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander 2.0 2.1 REGISTER DESCRIPTION GPIO State Register (GSR) - Read-Only The status of P7 - P0 can be read via this register. A read will show the current state of these pins (or the inverted state of these pins if enabled via the PIR Register). Reading this register will clear an input interrupt (see Table 3 for complete details). Reading this register will also return the last value written to the OCR register for any pins that are configured as outputs (ie. this is not the same as the state of the actual output pin since the output pin can be in three-state mode). A write to this register has no effect. The MSB of this register corresponds with P7 and the LSB of this register corresponds with P0. 2.2 Output Control Register (OCR) - Read/Write When P7 - P0 are defined as outputs, they can be controlled by writing to this register. Reading this register will return the last value written to it, however, this value may not be the actual state of the output pin since these pins can be in three-state mode. The MSB of this register corresponds with P7 and the LSB of this register corresponds with P0. 2.3 Input Polarity Inversion Register (PIR) - Read/Write When P7 - P0 are defined as inputs, this register inverts the polarity of the input value read from the Input Port Register. If the corresponding bit in this register is set to ’1’, the value of this bit in the GSR Register will be the inverted value of the input pin. If the corresponding bit in this register is set to ’0’, the value of this bit in the GSR Register will be the actual value of the input pin. The MSB of this register corresponds with P7 and the LSB of this register corresponds with P0. 2.4 GPIO Configuration Register (GCR) - Read/Write This register configures the GPIOs as inputs or outputs. Upon power-up or after a reset, the GPIOs are configured as inputs by default. Setting these bits to ’0’ will enable the GPIOs as outputs. Setting these bits to ’1’ will enable the GPIOs as inputs. The MSB of this register corresponds with P7 and the LSB of this register corresponds with P0. 2.5 Input Internal Pull-up Enable/Disable Register (PUR) - Read/Write This register enables/disables the internal pull-up resistors for an input. Upon power-up or after a reset, the internal pull-up resistors are disabled by default. Writing a ’1’ to these bits will enable the internal pull-up resistors. Writing a ’0’ to these bits will disable the internal pull-up resistors. The MSB of this register corresponds with P7 and the LSB of this register corresponds with P0. 2.6 Input Interrupt Enable Register (IER) - Read/Write This register enables/disables the interrupts for an input. Upon power-up or after a reset, the interrupts are disabled by default. Writing a ’1’ to these bits will enable the interrupt for the corresponding input pins. See Table 3 for complete details of the interrupt behavior for various register settings. No interrupts are generated for outputs when GCR bit is 0. The MSB of this register corresponds with P7 and the LSB of this register corresponds with P0. 2.7 Output Three-State Control Register (TSCR) - Read/Write This register can enable/disable the three-state mode of an output. Writing a ’1’ to these bits will enable the three-state mode for the corresponding output pins. The MSB of this register corresponds with P7 and the LSB of this register corresponds with P0. 2.8 Input Interrupt Status Register (ISR) - Read-Only This register reports the input pins that have generated an interrupt. See Table 3 for complete details of the interrupt behavior for various register settings. The MSB of this register corresponds with P7 and the LSB of this register corresponds with P0. 224DSR00 6 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander 2.9 Input Rising Edge Interrupt Enable Register (REIR) - Read/Write Writing a ’1’ to these bits will enable the corresponding input to generate an interrupt on the rising edge. See Table 3 for complete details of the interrupt behavior for various register settings. The MSB of this register corresponds with P7 and the LSB of this register corresponds with P0. 2.10 Input Falling Edge Interrupt Enable Register (FEIR) - Read/Write Writing a ’1’ to these bits will enable the corresponding input to generate an interrupt on the falling edge. Writing a ’1’ to these bits will make that input generate an interrupt on the rising edge only. See Table 3 for complete details of the interrupt behavior for various register settings. The MSB of this register corresponds with P7 and the LSB of this register corresponds with P0. 2.11 Input Filter Enable Register (IFR) - Read/Write By default, the input filters are enabled (IFR = 0xFF). When the input filters are enabled, any pulse that is greater than 1075ns will generate an interrupt (if enabled). Pulses that are less than 225ns will be filtered and will not generate an interrupt. Pulses in between this range may or may not generate an interrupt. Writing a ’0’ to these bits will disable the input filter for the corresponding inputs. With the input filters disabled, any change on the inputs will generate an interrupt (if enabled). See Table 3 for complete details of the interrupt behavior for various register settings. The MSB of this register corresponds with P7 and the LSB of this register corresponds with P0. 224DSR00 7 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander ABSOLUTE MAXIMUM RATINGS Power supply voltage 3.6 Volts Supply current 160 mA Ground current 200 mA External current limit of each GPIO 25 mA Total current limit for GPIO[7:0] 100 mA Total supply current sourced by all GPIOs 160 mA Operating Temperature -40o to +85oC Storage Temperature -65o to +150oC Power Dissipation 200 mW TYPICAL PACKAGE THERMAL RESISTANCE DATA (MARGIN OF ERROR: ± 15%) Thermal Resistance (16-QFN) theta-ja = 40oC/W, theta-jc = 26oC/W Thermal Resistance (16-TSSOP) theta-ja = 105oC/W, theta-jc = 20oC/W TSSOP-16 version available, QFN-16 version obsolete 224DSR00 8 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander ELECTRICAL CHARACTERISTICS DC ELECTRICAL CHARACTERISTICS UNLESS OTHERWISE NOTED: TA = -40O TO +85OC, VCC IS 1.65V TO 3.6V LIMITS SYMBOL PARAMETER LIMITS 1.8V 10% 2.5V 10% LIMITS 3.3V 10% MIN MAX MIN MAX MIN MAX UNITS CONDITIONS VIL Input Low Voltage -0.3 0.2 -0.3 0.5 -0.3 0.8 V Note 1 VIH Input High Voltage 1.4 5.5 1.8 5.5 2.0 5.5 V Note 1 VOL Output Low Voltage 0.4 V V V IOL = 6 mA 0.4 0.4 IOL = 4 mA IOL = 1.5 mA Note 2 & Note 4 VOL Output Low Voltage 0.5 0.5 0.5 V IOL = 8 mA Note 3 VOH Output High Voltage 2.0 V V V 1.8 1.4 IOL = -4 mA IOL = -2 mA IOL = -0.2 mA Note 2 VOH Output High Voltage 2.6 V V V 1.8 1.2 IOH = -8 mA IOH = -8 mA IOH = -8 mA Note 3 IIL Input Low Leakage Current ±10 ±10 ±10 uA IIH Input High Leakage Current ±10 ±10 ±10 uA CIN Input Pin Capacitance 5 5 5 pF ICC Power Supply Current 0.5 1.0 2.0 mA Test 1 ICC Power Supply Current 0.6 1.2 2.4 mA Test 2 ICCS Standby Current 1 2 5 uA Test 3 RGPIO GPIO pull-up resistance RRESET# Reset# pull-up resistance 60 140 60 140 60 140 k 100k 40% 35 85 35 85 35 85 k 60k 40% NOTES: 1. For SPI input signals (SI, SCL) & GPIOs, A0, A1 and A2 signals; 2. For SPI output signal SO; 3. For GPIOs; 4. For IRQ# signal; Test 1: SCL frequency is 10 MHz with internal pull-ups disabled. All GPIOs are configured as inputs. All inputs are steady at VCC or GND. Outputs are floating or in the tri-state mode. Test 2: SCL frequency is 10 MHz with internal pull-ups enabled. All GPIOs are configured as inputs. All inputs are steady at VCC or GND. Outputs are floating or in the tri-state mode. 224DSR00 9 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander Test 3: All inputs are steady at VCC or GND to minimize standby current. If internal pull-up is enabled, input voltage level should be the same as VCC. SCL and SI are at GND. CS# is at VCC. All GPIOs are configured as inputs. Outputs are left floating or in tri-state mode. AC ELECTRICAL CHARACTERISTICS - SPI-BUS TIMING SPECIFICATIONS Unless otherwise noted: TA=-40o to +85oC, Vcc=1.65V - 3.6V LIMITS SYMBOL PARAMETER LIMITS 1.8V 10% MIN TYP MAX 2.5V 10% MIN TYP 3.3V 10% MIN TYP TCSS CS# to SCL setup time 20 20 20 ns TCSH CS# to SCL hold time 20 20 20 ns TDO SCL fall to SO valid time TDS SI to SCL setup time 20 20 20 ns TDH SI to SCL hold time 20 20 20 ns TCP SCL period 66 38 38 ns TCH SCL HIGH time 30 15 15 ns TCL SCL LOW time 30 15 15 ns CS# HIGH pulse width 30 30 30 ns SPI output data valid time TD13 SPI input pin interrupt clear 224DSR00 100 26 100 10 10 200 10 100 10 200 CONDITIONS MAX Operating frequency TD9 26 UNIT fSCL TCSW 15 MAX LIMITS MHz ns CL = 30 pF TCH + TCL ns 200 ns Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander FIGURE 5. SPI-BUS TIMING CS# ... T CSH T CSS T CH T CL T CSH T CSW ... SCLK T DH T DS ... SI T DO T TR ... SO FIGURE 6. READ INPUT PORT TO CLEAR GPIO INT CS# SCL SI 1 0 0 A3 A2 A1 A0 X SO D7 D6 D5 D4 D3 D2 D1 D0 TD 13 INT # 224DSR00 11 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander FIGURE 7. SPI WRITE OUT TO GPIO SWITCH CS# SCL SI 0 0 0 A3 A2 A1 A0 X D7 D6 D5 D4 D3 D2 D1 D0 TD9 GPIOn 224DSR00 12 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander MECHANICAL DIMENSIONS (16 PIN QFN - 3 X 3 X 0.9 mm) 16 PIN QFN VERSION OBSOLETE 16X L TOP VIEW 16X b BOTTOM VIEW SIDE VIEW TERMINAL DETAILS Drawing No.: POD- 00000138 Revision: A Note: The control dimension is in millimeter. 224DSR00 13 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander RECOMMENDED LAND PATTERN AND STENCIL (16 PIN QFN - 3 X 3 X 0.9 mm) 16 PIN QFN VERSION OBSOLETE TYPICAL RECOMMENDED LAND PATTERN TYPICAL RECOMMENDED STENCIL Drawing No.: POD- 00000138 Revision: A Note: The control dimension is in millimeter. 224DSR00 14 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander MECHANICAL DIMENSIONS (16 PIN TSSOP - 4.4 mm) Top View Front View Side View POD-00000117 Drawing No: Revision: A Note: The control dimension is in millimeter. 224DSR00 15 Rev. 1.0.2 XRA1402 8-Bit SPI GPIO Expander REVISION HISTORY DATE REVISION DESCRIPTION September 2011 1.0.0 Final Datasheet. August 2020 1.0.1 Update to MaxLinear logo. Update Ordering Information. February 2, 2022 1.0.2 Updated: ■ ■ ■ ■ ■ ■ "GPIO Configuration Register (GCR) - Read/Write" section. "Input Internal Pull-Up Enable/Disable Register (PUR) - Read/Write" section. "Input Interrupt Enable Register (IER) - Read/Write" section. "Mechanical Dimensions (16 Pin QFN)" figure. "Recommended Land Pattern and Stencil (16 Pin QFN)" figure. "Mechanical Dimensions (16 Pin TSSOP)" figure. Added: ■ In the "AC Electrical Characteristics - SPI-Bus Timing Specifications" table, "TD9" parameter and "TYP" columns. ■ "SPI Write out to GPIO Switch" figure. Corporate Headquarters: 5966 La Place Court, Suite 100 Carlsbad, CA 92008 Tel.: +1 (760) 692-0711 Fax: +1 (760) 444-8598 www.maxlinear.com The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by MaxLinear, Inc. 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Other company trademarks and product names appearing herein are the property of their respective owners. © 2022 MaxLinear, Inc. All rights reserved. 224DSR00 16 Rev. 1.0.2