MAX3111ECNI+G36 Maxim Integrated Products, MAX3111ECNI+G36 Datasheet
MAX3111ECNI+G36
Specifications of MAX3111ECNI+G36
Related parts for MAX3111ECNI+G36
MAX3111ECNI+G36 Summary of contents
Page 1
... SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ Integrated RS-232 Transceiver and UART in a Single 28-Pin Package ♦ ...
Page 2
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 ...
Page 3
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 SYMBOL RS-232 ...
Page 4
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 SYMBOL DIN ...
Page 5
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 ...
Page 6
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 ...
Page 7
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 ...
Page 8
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 ...
Page 9
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 ...
Page 10
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors T2IN T1IN R2OUT R1OUT C1+ INTERNAL C1- C2+ INTERNAL C2 BUFFER 9 RX SHIFT REGISTER BAUD-RATE GENERATOR SHIFT REGISTER ...
Page 11
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 ...
Page 12
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 ...
Page 13
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Table 1. Bit Descriptions BIT BIT POR NAME TYPE STATE B0–B3 write 0000 Baud-Rate Divisor Select Bits. Sets the baud clock’s value (Table 6). B0–B3 read 0000 Baud-Rate Divisor ...
Page 14
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Table 1. Bit Descriptions (continued) BIT BIT POR NAME TYPE STATE Receiver-Activity/Framing-Error Bit. In shutdown mode, this is the RA bit. In normal operation, this is the FE bit. ...
Page 15
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Write Configuration Register (D15, D14 = 1, 1) Configure the UART by writing a 16-bit word to the write configuration register, which programs the baud rate, data word length, ...
Page 16
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 ...
Page 17
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 ...
Page 18
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 ...
Page 19
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 ...
Page 20
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Baud-Rate Generator The baud-rate generator determines the rate at which the transmitter and receiver operate. Bits B3–B0 in the write configuration register determine the baud-rate divisor (BRD), which divides ...
Page 21
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Table 7. Interrupt Sources and Masks—Bit Descriptions BIT MASK MEANING NAME BIT WHEN SET PM Pr Received parity bit = Data available Transition on RX when ...
Page 22
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors RS-232 Transmitters The transmitters are inverting-level translators that con- vert CMOS-logic levels to ±5.0V EIA/TIA-232 levels. The transmitters guarantee a 230kbps data rate with worst- case loads of 3kΩ ...
Page 23
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors 1500Ω DISCHARGE CHARGE-CURRENT RESISTANCE LIMIT RESISTOR HIGH STORAGE VOLTAGE 100pF CAPACITOR DC SOURCE Figure 8a. Human Body ESD Test Model R R ...
Page 24
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Ceramic resonators are low-cost alternatives to crystals and operate similarly, although the Q and accuracy are lower. Some ceramic resonators are available with inte- gral load capacitors, which can ...
Page 25
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors The MAX3110E/MAX3111E maintain the RS-232 ±5.0V minimum transmitter output-voltage specification even at the highest guaranteed data rate. Figure 10 shows a transmitter loopback test circuit. Figure 11 shows a ...
Page 26
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Table 9. Logic-Family Compatibility with Various Supply Voltages LOGIC V SUPPLY CC POWER-SUPPLY VOLTAGE VOLTAGE (V) ( (MAX3110E) 3.3 3.3 (MAX3111E) 5 3.3 (MAX3111E) 232 SHUTDOWN μP ...
Page 27
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 ...
Page 28
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Listing 1. Outline for a MAX3110E/MAX3111E Software Driver This is a C-language outline of an interrupt-driven software driver that interfaces to a MAX3110E/MAX3111E, providing an intermediate layer between the ...
Page 29
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Listing 1. Outline for a MAX3110E/MAX3111E Software Driver (continued) /* This driver needs a txqueue transmit-data queue and a rxqueue receive-data queue. ** These can be ring buffers or ...
Page 30
SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors Ordering Information (continued) PART TEMP. RANGE PACKAGE MAX3110EEWI -40°C to +85°C 28 Wide SO MAX3110EENI -40°C to +85°C 28 Plastic DIP MAX3111ECWI 0°C to +70°C 28 Wide SO MAX3111ECNI ...
Page 31
... 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 change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 31 © 2005 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...