MAX3110 MAXIM [Maxim Integrated Products], MAX3110 Datasheet
MAX3110
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MAX3110 Summary of contents
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... Rev 0; 7/99 SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors General Description The MAX3110E/MAX3111E combine a full-featured uni- versal asynchronous receiver/transmitter (UART) with ±15kV ESD-protected RS-232 transceivers and inte- grated charge-pump capacitors into a single 28-pin package for use in space-, cost-, and power-con- strained applications. The MAX3110E/MAX3111E also feature an SPI™ ...
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... SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors ABSOLUTE MAXIMUM RATINGS V to GND (MAX3110E) ........................................-0. GND (MAX3111E).........................................-0. GND (Note 1) ..................................................-0. GND (Note 1) ...................................................+0. (Note 1) ..................................................................+13V Input Voltages to GND CS, X1, CTS, RX, DIN, SCLK .................. -0. T_IN, SHDN ...........................................................-0.3V to +6V R_IN ..................................................................................± ...
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... SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors ELECTRICAL CHARACTERISTICS—MAX3110E (continued +4.5V to +5.5V MIN V = +5V +25°C.) (Note PARAMETER RS-232 RECEIVER INPUTS (R_IN) Input Voltage Range Input High Voltage Input Low Voltage Input Hysteresis ...
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... SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors ELECTRICAL CHARACTERISTICS—MAX3110E (continued +4.5V to +5.5V MIN MAX V = +5V +25°C.) (Note PARAMETER SYMBOL DIN to SCLK Setup Time DIN to SCLK Hold Time SCLK Period SCLK High Time ...
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SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors ELECTRICAL CHARACTERISTICS—MAX3111E (V = +3.0V to +3.6V MIN V = +3.3V +25°C.) (Note PARAMETER SYMBOL DC CHARACTERISTICS ...
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SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors ELECTRICAL CHARACTERISTICS—MAX3111E (continued +3.0V to +3.6V MIN MAX V = +3.3V +25°C.) (Note PARAMETER SYMBOL ...
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SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors ELECTRICAL CHARACTERISTICS—MAX3111E (continued +3.0V to +3.6V MIN V = +3.3V +25°C.) (Note PARAMETER SYMBOL RS-232 ...
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... SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors (T = +25°C, unless otherwise noted.) A UART SUPPLY CURRENT vs. TEMPERATURE 1000 1.8432MHz CRYSTAL 900 TRANSMITTING AT 115.2kbps 800 700 600 500 MAX3110E +5V CC 400 300 MAX3111E +3.3V CC 200 100 0 -40 - ...
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SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors PIN NAME 1 R2IN RS-232 Receiver Input 2 2 R2OUT RS-232 Receiver Output 2, TTL/CMOS 3 T2IN RS-232 Transmitter lnput 2, TTL/CMOS 4 T1IN RS-232 Transmitter lnput 1, TTL/CMOS ...
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... The universal asynchronous receiver transmitter (UART) interfaces the SPI/QSPI/MICROWIRE-compati- ble synchronous serial data from a microprocessor (µP) to asynchronous, serial-data communication ports (RS- 232, IrDA). Figure 1 shows the MAX3110E/MAX3111E functional diagram. Included in the UART function is an SPI/QSPI/MICROWIRE interface, a baud-rate generator, and an interrupt generator. T2OUT ...
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... SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors The MAX3110E/MAX3111E are compatible with SPI, QSPI (CPOL = 0, CPHA = 0), and MICROWIRE serial- interface standards (Figure 2). The MAX3110E/ MAX3111E have a unique full-duplex-only architecture that expects a 16-bit word for DIN and simultaneously produces a 16-bit word for DOUT regardless of which read/write register is used ...
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SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors CS SCLK FEN SHDN DIN DOUT Figure 4. Write Configuration Register Example START ...
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... Parity-Enable Bit. Appends the Pt bit to the transmitted data when and sends the Pt bit as written. No parity bit is transmitted when With extra bit is expected write 0 received. This data is put into the Pr register when The MAX3110E/MAX3111E do not calculate parity. PE read 0 Reads the value of the Parity-Enable bit ...
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... When a GETCHAR executes, it checks its own receive buffer before getting data from the UART. See the C-language Outline of a MAX3110E/ MAX3111E Software Driver in Listing 1, which appears at the end of this data sheet. Listing C-language outline of an interrupt-driven ...
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... The mask bits (TM, RM, PM, RAM) take effect immediately after SCLK’s 16th rising edge. Bits 15 and 14 of the DOUT write configuration (R and T) are sent out of the MAX3110E/MAX3111E along with 14 trailing zeros. The use of the R and T bits is optional, but ignore the 14 trailing zeros. ...
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SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Table 2. Write Configuration (D15, D14 = 1, 1) BIT FEN DIN 1 1 SHDNi DOUT D15 is present at DOUT ...
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SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Table 3. Read Configuration (D15, D14 = 0, 1) BIT DIN FEN DOUT R T SHDNo D15 is present at DOUT ...
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SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Table 4. Write Data (D15, D14 = 1, 0) BIT DIN DOUT D15 is present at DOUT ...
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SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Table 5. Read Data (D15, D14 = 0, 0) BIT DIN DOUT D15 is present at DOUT ...
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... Example 2. Set up only the data-available (or data- being-read) interrupt. Send the 16-bit word below into DIN of the MAX3110E/MAX3111E using the Write Configuration register. This 16-bit word configures the MAX3110E/ MAX3111E for 9600bps, 8-bit words, no parity, and one stop bit with a 1.8432MHz crystal. binary 1100010000001010 ...
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... This is the RA (RX-transition) bit in shutdown, and the framing-error (FE) bit in operating mode set if there has been a transition on RX since entering shutdown cleared when the MAX3110E/MAX3111E exits shutdown. IRQ is asserted when RA is set and RAM = determined solely by the currently received data and is not stored in FIFO. ...
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... LapLink™). Transmitters can be paralleled because the outputs are forced into a high-impedance state when the device is in hardware shutdown (SHDN = GND). The MAX3110E/MAX3111E permit the outputs to be driven up to ±12V while in shutdown. The transmitter inputs do not have pull-up resistors. Connect unused inputs to GND or V ...
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... TEST 0.7ns to 1ns Figure 9b. IEC 1000-4-2 ESD Generator Current Waveform Machine Model The MAX3110E/MAX3111E include an oscillator circuit derived from an external crystal oscillator for baud-rate generation. For standard baud rates, use a 1.8432MHz or 3.6864MHz crystal. The 1.8432MHz crystal results in lower operating current; however, the 3.6864MHz crystal may be more readily available in surface mount ...
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... This helps mini- mize parasitic capacitance and noise pickup in the oscillator, and reduces EMI. Minimize capacitive load- ing minimize supply current. The MAX3110E/ MAX3111E’s X1 input can be driven directly by an external CMOS clock source. The trip level is approxi- ...
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... ACT and HCT CMOS. See Table 9 for more information on possi- ble combinations of interconnections. The MAX3110E/MAX3111E each contain a UART, two RS-232 drivers, and two RS-232 receivers in one pack- age. The standard RS-232 typical operating circuit is shown in Figure 13. ...
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... In this mode, the parity bit is set to indicate a message that contains a header with a destination address. The MAX3110E/MAX3111E’s parity mask can be set to generate interrupts for this condition. Operating a network in this mode reduces the process- ing overhead of all nodes by enabling the slave con- trollers to ignore most message traffic ...
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... SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors In 9-bit mode, the MAX3110E/MAX3111E is set up with eight bits plus parity. The parity bit in all normal mes- sages is clear but is set in an address-type message. The MAX3110E/MAX3111E’s parity-interrupt mask gen- erates an interrupt on high parity when enabled. When ...
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... If and SPI hardware interface is available, use (CPOL=0,CPHA=0) mode. ** Lacking specialized hardware, just set and clear I/O bits to generate ** the waveform in figures 2 and 3 in the MAX3110E/MAX311E data sheet. */ return miso; /* return 16 bits of master-in, slave-out data, MSB first */ ...
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... These can be ring buffers or any other kind of first-in, first-out data queue. */ EnQueue ( queue , char ) char DeQueue ( queue ) true/false IsQueueEmpty ( queue ) /* Interrupt service routine called when the MAX3110EMAX3111E’s INT pin falls to a low level. ** This is a PRIVATE routine to be used only within the driver software. */ ServiceMAX3110E/MAX3111Eint ( ) { int rxdata ...
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... Wide SO MAX3111ECNI 0°C to +70°C 28 Plastic DIP MAX3111EEWI -40°C to +85°C 28 Wide SO MAX3111EENI -40°C to +85°C 28 Plastic DIP Pin Configuration TOP VIEW R2IN 1 R2OUT 2 T2IN 3 T1IN 4 R1OUT 5 MAX3110E R1IN 6 MAX3111E T1OUT CTS 11 RTS Narrow DIP/Wide SO ...
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SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors ______________________________________________________________________________________ Package Information 31 ...
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SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to ...