MAX3100 SPI/MICROWIRE-Compatible UART in QSOP-16 General Description Features The MAX3100 universal asynchronous receiver transmit- Small TQFN and QSOP Packages Available ter (UART) is the first UART specifically optimized for Full-Featured UART: small microcontroller-based systems. Using an IrDA SIR Timing Compatible SPI/MICROWIRE interface for communication with the host microcontroller (C), the MAX3100 comes in a 8-Word FIFO Minimizes Processor compact 16-pin QSOP. The asynchronous I/O is suitable Overhead at High Data Rates for use in RS-232, RS-485, IR, and opto-isolated data Up to 230k Baud with a 3.6864MHz Crystal links. IR-link communication is easy with the MAX3100s 9-Bit Address-Recognition Interrupt infrared data association (IrDA) timing mode. Receive Activity Interrupt in Shutdown The MAX3100 includes a crystal oscillator and a baud- SPI/MICROWIRE-Compatible C Interface rate generator with software-programmable divider ratios Lowest Power: for all common baud rates from 300 baud to 230k baud. A software- or hardware-invoked shutdown lowers quies- 150A Operating Current at 3.3V cent current to 10A, while allowing the MAX3100 to 10A in Shutdown with Receive Interrupt detect receiver activity. +2.7V to +5.5V Supply Voltage in Operating Mode An 8-word-deep first-in/first-out (FIFO) buffer minimizes Schmitt-Trigger Inputs for Opto-Couplers processor overhead. This device also includes a flexible interrupt with four maskable sources, including address TX and RTS Outputs Sink 25mA for Opto-Couplers recognition on 9-bit networks. Two hardware-handshak- ing control lines are included (one input and one output). Ordering Information The MAX3100 is available in 14-pin plastic DIP and small, 16-pin QSOP packages in the commercial and extended PART TEMP RANGE PIN-PACKAGE temperature ranges. MAX3100CPD+ 0C to +70C 14 Plastic DIP Applications MAX3100CEE+ 0C to +70C 16 QSOP Handheld Instruments MAX3100EPD+ -40C to +85C 14 Plastic DIP MAX3100EEE+ -40C to +85C 16 QSOP Intelligent Instrumentation MAX3100ETG+ -40C to +85C 24 TQFN-EP* UART in SPI Systems +Denotes a lead(Pb)-free/RoHS-compliant package. Functional Diagrams Small Networks in HVAC or Building Control EP = Exposed pad. Isolated RS-232/RS-485: Directly Drives Opto-Couplers Typical Operating Circuit appears at end of data sheet. Low-Cost IR Data Links for Computers/Peripherals Pin Configurations Pin ConfigurationsPin Configurations TOP VIEW 18 17 16 15 14 13 + + DIN 1 14 V CC DIN 1 16 V CC N.C. 19 12 N.C. DOUT 2 13 TX DOUT 2 15 TX N.C. 20 11 X1 SCLK 3 12 RX SCLK 3 14 RX TX 21 10 X2 CS 4 MAX3100 11 RTS CS 4 MAX3100 13 RTS MAX3100 V GND 22 9 CC IRQ 5 10 CTS N.C. 5 12 N.C. DIN SHDN 23 8 SHDN 6 9 X1 IRQ 6 11 CTS *EP N.C. N.C. 24 7 + GND 7 8 X2 SHDN 7 10 X1 1 2 34 56 GND 8 9 X2 DIP Pin Configurations appear at end of data sheet. QSOP TQFN-EP Functional Diagrams continued at end of data sheet. *EP = EXPOSED PAD, CONNECT EP TO GROUND UCSP is a trademark of Maxim Integrated Products, Inc. SPI is a trademark of Motorola, Inc. MICROWIRESPI is a trademark of Motorola, Inc. MICROWIRESPI is a trademark of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.is a trademark of National Semiconductor Corp.is a trademark of National Semiconductor Corp. For pricing, delivery, and ordering information, please contact Maxim Direct 19-1259 Rev 2 1/09 at 1-888-629-4642, or visit Maxims website at www.maxim integrated.com. AVAILABLE N.C. N.C. DOUT RX SCLK RTS CS CTS IRQ N.C. N.C. N.C.MAX3100MAX3100 SPI/MICROWIRE-Compatible UART in QSOP-16 ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................................+6V Continuous Power Dissipation (T = +70C) CC A Input Voltage to GND Plastic DIP (derate 10.00mW/C above +70C) .......... 800mW (CS, SHDN, X1, CTS, RX, DIN, SCLK) ....-0.3V to (V + 0.3V) QSOP (derate 8.30mW/C above +70C).....................667mW CC Output Voltage to GND TQFN (derate 33.3mW/C above +70C) ................2666.7mW (DOUT, RTS, TX, X2) ..............................-0.3V to (V + 0.3V) Operating Temperature Ranges CC IRQ...........................................................................-0.3V to 6V MAX3100C ......................................................0C to +70C TX, RTS Output Current ....................................................100mA MAX3100E ...................................................-40C to +85C X2, DOUT, IRQ Short-Circuit Duration Storage Temperature Range ............................ -65C to +160C (to V or GND) .........................................................Indefinite Lead Temperature (soldering, 10s) ................................ +300C CC Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +2.7V to +5.5V, T = T to T , unless otherwise noted. Typical values are measured at 9600 baud at T = +25C.) CC A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS LOGIC INPUTS (DIN, SCLK, CS, SHDN, CTS, RX) Input High Voltage V 0.7 x V V IH CC Input Low Voltage V 0.3 x V V IL CC Input Hysteresis V V = 3.3V 0.05 x V V HYST CC CC Input Leakage I 1 A IL Input Capacitance C 5 pF IN OSCILLATOR INPUT (X1) Input High Voltage V 0.7 x V V / 2 V IH CC CC Input Low Voltage V V / 2 0.2 x V V IL CC CC Active mode 25 Input Current I V = 0V and 5.5V A IN X1 Shutdown mode 2 Input Capacitance C V = 0V and 5.5V 5 pF IN X1 OUTPUTS (DOUT, TX, RTS) I = 5mA V - 0.5 SOURCE CC Output High Voltage V V OH I = 25A, TX only V - 0.5 SOURCE CC TX, RTS: I = 25mA 0.9 SINK Output Low Voltage V V OL DOUT, TX, RTS: I = 4mA 0.4 SINK Output Leakage I DOUT only, CS = V 1 A LK CC Output Capacitance C 5 pF OUT IRQ OUTPUT (Open Drain) Output Low Voltage V I = 4mA 0.4 V OL SINK Output Leakage I V = 5.5V 1 A LK IRQ Output Capacitance C 5 pF OUT POWER REQUIREMENTS With 1.8432MHz crystal V = 5V 0.27 1 CC V Supply Current in CC I all other logic inputs are at mA CC Normal Mode V = 3.3V 0.15 0.4 0V or V CC CC V Supply Current in CC SHDN bit = 1 or SHDN = 0, I 10 A CC Shutdown logic inputs are at 0V or V CC Supply Voltage V 2.7 5.5 V CC 2 Maxim Integrated