19-6320 Rev 0 5/12 MAX4824PMB1 Peripheral Module General Description Features The MAX4824PMB1 peripheral module provides the nec- S Eight Independent Output Channels Capable of essary hardware to interface the MAX4824 8-channel relay 70mA Sink Current TM driver to any system that utilizes Pmod -compatible S Guaranteed 5I (max) R ON expansion ports configurable for GPIO communication. S Drive Eight Relays (or Other Loads) Independently Each independent channel in the IC features a 2.7I (typ) on-resistance and is guaranteed to sink 70mA S 4-Bit Parallel Interface (SPI Version of IC also Available) (min) of load current. A zener kickback-protection circuit significantly reduces recovery time in applications where S 12-Pin Pmod-Compatible Connector (GPIO) switching speed is critical. When driving relays, a unique S Example Software Written in C for Portability power-save mode allows relay current to be reduced S RoHS Compliant to a level just above the relay hold-current threshold. This mode keeps the relay activated while significantly S Proven PCB Layout reducing the power consumption. S Fully Assembled and Tested Refer to the MAX4824 IC data sheet for detailed informa- tion regarding operation of the IC. Ordering Information appears at end of data sheet. MAX4824PMB1 Peripheral Module Pmod is a trademark of Digilent Inc. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX4824PMB1 Peripheral Module Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 12-pin (2 x 6) right-angle male 1FF Q10%, 10V X7R ceramic J1 1 header C1 1 capacitor (0603) TDK C1608X7R1A105K 10-pin (2 x 5) straight male J2 1 header 0.1FF Q10%, 16V X7R ceramic C2 1 capacitor (0603) R1R8 8 150I Q5% resistors (0603) Murata GRM188R71C104KA01D 8-channel relay driver U1 1 (20 TQFN-EP*) 2.2FF Q10%, 10V X5R ceramic Maxim MAX4824ETP+ C3 1 capacitor (0603) TDK C1608X5R1A225K/0.80 1 PCB: EPCB4824PM1 *EP = Exposed pad. Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX4824PMB1 when contacting these component suppliers. Table 1. Connector J1 Detailed Description (GPIO Communication) GPIO Interface PIN SIGNAL DESCRIPTION The MAX4824PMB1 peripheral module can interface to Chip-select input. This active-low the host by plugging directly into a Pmod-compatible 1 signal latches in the values of LVL and port (configured for GPIO) through connector J1. CS A2, A1, A0. J1 provides connection of the module to the Pmod host through an interface similar to the Pmod Type 1 standard Level input. When latched by CS, this recommended by Digilent, but incorporates a 12in con- 2 LVL signal determines whether a relay at a nector with eight I/O pins. See Table 1. given address (A2, A1, A0) is active. 3 A1 A1 input. Relay address bit 1. The J2 connector provides the connection to the open- drain relay outputs. See Table 2. 4 A0 A0 input. Relay address bit 0. 5 GND Ground Software and FPGA Code 6 VCC Power supply Example software and drivers are available that execute 7 A2 A2 input. Relay address bit 2. directly without modification on several FPGA develop- ment boards, which support an integrated or synthe- Reset Input. This active-low pin sets all 8 RES sized microprocessor. These boards include the Digilent eight relays inactive. Nexys 3, Avnet LX9, and Avnet ZEDBoard, although Set Input. This active-low pin sets all 9 SET other platforms can be added over time. Maxim provides eight relays active. complete Xilinx ISE projects containing HDL, Platform Reduces coil current to relay Studio, and SDK projects. In addition, a synthesized bit 10 PSAVE hold-current threshold. stream, ready for FPGA download, is provided for the 11 GND Ground demonstration application. 12 VCC Power supply Maxim Integrated Products 2