MAX3110ECWI-T Maxim Integrated, MAX3110ECWI-T Datasheet

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MAX3110ECWI-T

Manufacturer Part Number
MAX3110ECWI-T
Description
UART Interface IC
Manufacturer
Maxim Integrated
Type
SPI/MICROWIRE-Compatible UART with Integrated ESD-Protected RS-232 Transceiverr
Datasheet

Specifications of MAX3110ECWI-T

Number Of Channels
1
Data Rate
250 Kbps
Supply Voltage - Max
5.5 V
Supply Voltage - Min
4.5 V
Supply Current
0.6 mA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Package / Case
SOIC-28 Wide
Description/function
SPI/MICROWIRE-Compatible UART with integrated ESD-protected RS-232 transceiver
Mounting Style
SMD/SMT
Operating Supply Voltage
5 V
Propagation Delay Time Ns
150 ns
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
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™/QSPI™/MICROWIRE™-compatible
serial interface to save additional board space and
microcontroller (µC) I/O pins.
A proprietary low-dropout output stage enables the
2-driver/2-receiver interface to deliver true RS-232 per-
formance down to V
while consuming only 600µA. The receivers remain
active in a hardware/software-invoked shutdown, allow-
ing external devices to be monitored while consuming
only 10µA. Each device is guaranteed to operate at up
to 230kbps while maintaining true EIA/TIA-232 output
voltage levels.
The MAX3110E/MAX3111E’s UART includes a crystal
oscillator and baud-rate generator with software-pro-
grammable divider ratios for all common baud rates
from 300baud to 230kbaud. The UART features an 8-
word-deep receive FIFO that minimizes processor over-
head and provides a flexible interrupt with four
maskable sources. Two control lines (one input and
one output) are included for hardware handshaking.
The UART and RS-232 functions can be used together
or independently since the two functions share only
supply and ground connections (the MAX3110E/
MAX3111E are hardware- and software-compatible
with the MAX3100 and MAX3222E).
________________________Applications
Pin Configuration appears at end of data sheet.
4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and
other patents pending.
Protected RS-232 Transceivers with Internal Capacitors
Covered by U.S. Patent numbers 4,636,930; 4,679,134;
Point-of-Sale (POS) Devices
Handy-Terminals
Telecom/Networking Diagnostic Ports
Industrial Front-Panel Interfaces
Hand-Held/Battery-Powered Equipment
SPI/MICROWIRE-Compatible UART and ±15kV ESD-
CC
Functional Diagrams
General Description
= +3V (+4.5V for MAX3110E)
MAX3110E/MAX3111E
♦ Integrated RS-232 Transceiver and UART in a
♦ SPI/QSPI/MICROWIRE-Compatible µC Interface
♦ Internal Charge-Pump Capacitors—
♦ True RS-232 Operation Down to V
♦ ESD Protection for RS-232 I/O Pins
♦ Single-Supply Operation
♦ Low Power
♦ Guaranteed 230kbps Data Rate
♦ Hardware/Software-Compatible with MAX3100
Ordering Information continued at end of data sheet.
MAX3110ECWI
MAX3110ECNI
Single 28-Pin Package
No External Components Required!
(MAX3111E)
and MAX3222E
PART
μP
±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap Discharge
+5V (MAX3110E)
+3.3V (MAX3111E)
600µA Supply Current
10µA Shutdown Supply Current with
Receiver Interrupt Active
CS
SCLK
DIN
DOUT
IRQ
Typical Application Circuit
SPI
0°C to +70°C
0°C to +70°C
RANGE
TEMP.
U
A
R
T
Ordering Information
MAX3110E
MAX3111E
RS-232
28 Wide SO
28 Plastic DIP
PACKAGE
PIN-
1
CC
19-1494; Rev 1; 12/05
6
Features
2
= +3V
7
DB-9
3
8
4
9
V
(V)
CC
5
5
5

Related parts for MAX3110ECWI-T

MAX3110ECWI-T Summary of contents

Page 1

... Receiver Interrupt Active ♦ Guaranteed 230kbps Data Rate ♦ Hardware/Software-Compatible with MAX3100 and MAX3222E Ordering Information TEMP. PART RANGE PACKAGE MAX3110ECWI 0°C to +70°C 28 Wide SO MAX3110ECNI 0°C to +70°C 28 Plastic DIP Ordering Information continued at end of data sheet. Typical Application Circuit MAX3110E ...

Page 2

... LKG1 C IN2 IH3 CC V IL3 V HYST3 I IN3 or GND).............................Continuous CC = +70°C) A MIN TYP 0.6 0.48 3 0.7V CC SHDNi bit = 0 SHDNi bit = 1 5 0.7V CC 250 5 2.4 500 ±0.01 MAX UNITS µ 0. µ 0. ±1 µ ±1 µA Maxim Integrated ...

Page 3

... Output Low Voltage Output Capacitance UART AC TIMING CS Low to DOUT Valid CS High to DOUT Tri-State CS to SCLK Setup Time CS to SCLK Hold Time SCLK Fall to DOUT Valid Maxim Integrated MAX3110E/MAX3111E , unless otherwise noted. Typical values are measured for baud rate set to 9600baud at MAX SYMBOL CONDITIONS +25° ...

Page 4

... A measured from +3V to -3V or -3V to +3V MIN TYP 100 0 238 100 100 100 200 200 10 = 100pF 10 L 250 150 150 100 150pF 1000pF C = 150pF 2500pF MAX UNITS kbps V/µs 30 Maxim Integrated ...

Page 5

... RS-232 RECEIVER INPUTS (R_IN) Input Voltage Range Input High Voltage Input Low Voltage Input Hysteresis Input Resistance RS-232 ESD PROTECTION (R_IN, T_OUT) ESD Protection Maxim Integrated MAX3110E/MAX3111E , unless otherwise noted. Typical values are measured for baud rate set to 9600baud at MAX SYMBOL CONDITIONS = +25°C) A ...

Page 6

... 10kΩ 100 0 100 0 238 100 100 100 200 200 10 = 100pF 10 = 100pF LOAD MAX UNITS V 0 Ω ±60 mA ±25 µA ±1 µA V 0.4 V 0.9 pF ±1 µA 0 100 ns 100 100 Maxim Integrated ...

Page 7

... UART and charge pumps are CCSHDN(H+S) shut down. Note 5: Transmitter skew is measured at the transmitter zero cross points. Maxim Integrated MAX3110E/MAX3111E , unless otherwise noted. Typical values are measured for baud rate set to 9600baud at MAX ...

Page 8

... TX 40 DOUT 0.9 1.0 0 0.1 0.2 0.3 0.4 VOLTAGE (V) RS-232 TRANSMITTER SLEW RATE vs. LOAD CAPACITANCE 16 TRANSMITTER 1 AT 250kbps 3kΩ -SLEW 8 +SLEW 120kbps 20kbps 0 4000 5000 0 1000 2000 LOAD CAPACITANCE (pF) +5V STANDBY +3V STANDBY 10k 100k 1M = +3.3V) CC RTS TX DOUT 0.5 0.6 0.7 0.8 0.9 1.0 L 3000 4000 5000 Maxim Integrated ...

Page 9

... Positive terminal of internal inverting charge-pump capacitor. Do not make any connection to this terminal. 25 C2- Negative terminal of internal inverting charge-pump capacitor. Do not make any connection to this terminal -5.5V generated by the internal charge pump. Do not make any connection to this terminal. 27 GND Ground 28 T2OUT RS-232 Transmitter Output 2 Maxim Integrated MAX3110E/MAX3111E Pin Description FUNCTION 9 ...

Page 10

... 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 T1OUT R2IN R1IN INTERNAL GND INTERNAL V- SHDN MAX3110E/MAX3111E IRQ DOUT 9 SPI INTERFACE SCLK CS DIN down to the minimum supply voltage and CC UART Maxim Integrated ...

Page 11

... DIN t DV DOUT Figure 3. Detailed Serial Timing Specifications for the Synchronous SPI Port Maxim Integrated MAX3110E/MAX3111E SPI Interface edge. Figure 3 shows the detailed serial timing specifi- cations for the synchronous SPI port. Only 16-bit words are expected goes high in the middle of a transmission (any time before the 16th bit), the sequence is aborted (i ...

Page 12

... STOP STOP IDLE D6 STOP STOP IDLE STOP STOP IDLE D6 Pt STOP STOP IDLE SECOND STOP BIT IS OMITTED DATA UPDATED 0 Maxim Integrated ...

Page 13

... RTS write 0 Maxim Integrated MAX3110E/MAX3111E Baud-Rate Divisor Select Bits. Sets the baud clock’s value (Table 6). Baud-Rate Divisor Select Bits. Reads the 4-bit baud clock value assigned to these registers. Clear-to-Send-Input. Records the state of the CTS pin (CTS bit = 0 implies CTS pin = logic high) ...

Page 14

... MAX3111E, providing an intermediate layer between the bit-manipulation subroutine and the familiar PUTCHAR/GETCHAR subroutines. The user must supply code for managing the transmit and receive queues as well as the low-level hardware interface itself. The interrupt control hardware must be initialized before this driver is called. DESCRIPTION Maxim Integrated ...

Page 15

... UART. In this register, bits 15 and 14 of the DIN configuration word are required and 1, respectively, to enable the read Maxim Integrated MAX3110E/MAX3111E configuration mode. Bits 13–1 of the DIN word should be zeros, and bit 0 is the test bit to put the UART in test mode (see the Test Mode section) ...

Page 16

... Parity is disabled for both transmit and receive. bit 4: DIN 7-bit words (8-bit words 8-bit words (9-bit words bits 3–0: DIN B3–B0 = XXXX, Baud-Rate Divisor Select Bits (see Table Maxim Integrated ...

Page 17

... Parity is enabled for both transmit (state of Pt) and receive Parity is disabled for both transmit and receive. bit 4: DOUT 7-bit words (8-bit words 8-bit words (9-bit words bits 3–0: DOUT B3–B0 = XXXX Baud-Rate Divisor Select Bits (see Table 6) Maxim Integrated MAX3110E/MAX3111E ...

Page 18

... Transmit parity bit is low low parity bit will be transmitted then no parity bit will be transmitted. bits 7–0: DIN D7t–D0t = Transmitting Data Bits. D7t is ignored when D6t D5t D4t D3t D2t D6r D5r D4r D3r D2r Maxim Integrated 1 0 D1t D0t D1r D0r ...

Page 19

... RA/FE = Receive-Activity (UART shutdown)/Framing-Error (Normal Operation) Bit bit 9: DOUT CTS = CTS input state. If CTS = 0, then CTS = 1 and vice versa. bit 8: DOUT Pr = Received parity bit. This is only valid bits 7–0: DOUT D7r–D0r = Received Data Bits. D7r = 0 for Maxim Integrated MAX3110E/MAX3111E ...

Page 20

... DATA READ TM MASK AND RECEIVED S Q PARITY BIT = RECEIVED PARITY BIT = 0 PM MASK TRANSITION ON RX RAM MASK FRAMING ERROR RAM MASK BAUD RATE (f = OSC 3.6864MHz) 230.4k** 115.2k 57.6k 28.8k 14.4k 7200 3600 1800 76.8k 38.4k 19.2k 9600 4800 2400 1200 600 SHUTDOWN SHUTDOWN Maxim Integrated ...

Page 21

... RX pin. This allows the UART to monitor activity on the receiver when in shutdown. When taking the part out of software shutdown (SHDNi = 0), the oscillator turns on when CS goes high. After Maxim Integrated MAX3110E/MAX3111E DESCRIPTION The Pr bit reflects the value in the word currently in the receive-buffer register (oldest data available) ...

Page 22

... Model. Figure 9a shows the IEC 1000-4-2 model, and Figure 9b shows the current waveform for the ±8kV IEC 1000-4-2 Level 4 ESD contact-discharge test 3.3V CC 40μs/div ESD Test Conditions Human Body Model LapLink is a trademark of Traveling Software. SHDN T2OUT T1OUT IEC 1000-4-2 Maxim Integrated ...

Page 23

... Its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing. Of course, all pins require this protec- tion during manufacturing, not just RS-232 inputs and outputs. Therefore, after PC board assembly, the Machine Model is less relevant to I/O ports. Maxim Integrated MAX3110E/MAX3111E I P AMPERES DEVICE ...

Page 24

... ECS International, Inc. 47 Murata North America 33 ECS International, Inc. 39 ECS International, Inc. None AVX/Kyocera (integral) /2. Make no connection this CC RS-232 Transmitter Outputs Exiting Shutdown PART PHONE NUMBER NUMBER ECS-18-13-1 913-782-7787 CSA1.84MG 800-831-9172 ECS-36-18-4 913-782-7787 ECS-36-20-5P 913-782-7787 PBRC-3.68B 803-448-9411 Maxim Integrated ...

Page 25

... V = 3.3V (MAX3111E 5.0V (MAX3110E Figure 11. Loopback Test Result at 120kbps Maxim Integrated MAX3110E/MAX3111E High Data Rates The MAX3110E/MAX3111E can directly interface with various 3.3V and 5V logic families, including 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 ...

Page 26

... V CC 232 ACTIVE SHDN V CC 100k TX UART IN IRQ IrDA DIN RX MODE DOUT SCLK X1 CS MAX3110E MAX3111E X2 T1IN T1OUT TX R1OUT R1IN RX R2OUT R2IN CTS T2IN T2OUT RTS C1+ V+ C1- V- C2+ GND C2- 9-Bit Networks MAX3120 TXD IrDA I/O RXD RS-232 I/O Maxim Integrated ...

Page 27

... MAX3111E must be set to transmit pulses at 3/16 of the baud period. For compatibility with other IrDA devices, set the format to 8-bit data, one stop, no parity. For more detailed information on SIR IrDA mode, refer to the MAX3100 data sheet. Maxim Integrated MAX3110E/MAX3111E NORMAL UART Figure 15. IrDA Timing SIR IrDA Mode ...

Page 28

... 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 */ } 28 The interrupt control hardware must be int bit unsigned integer the bitwise Boolean OR operator. */ Maxim Integrated ...

Page 29

... IsQueueEmpty ( txqueue ) ) { } else /* transmit some data */ { } } } /* end of ServiceMAX3110E/MAX3111Eint */ Maxim Integrated MAX3110E/MAX3111E /* the R bit = the T bit = mask the transmit-buffer-empty interrupt */ config = config & ~ 0x0800; /* clear the TM bit */ config = config | 0xC000; /* set bits 15 and 14 */ MAX3110E/MAX3111E ( config ); /* issue a WRITE DATA command */ txdata = DeQueue ( txqueue ); ...

Page 30

... T2OUT R2OUT 2 27 GND T2IN T1IN 4 25 C2- R1OUT 5 24 C2+ MAX3110E R1IN 6 23 C1- MAX3111E T1OUT SHDN IRQ CTS RTS SCLK DOUT DIN Narrow DIP/Wide SO Package Information DOCUMENT NO. 21-0042 21-0043 Maxim Integrated ...

Page 31

... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 © 2005 Maxim Integrated MAX3110E/MAX3111E DESCRIPTION The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. Revision History PAGES CHANGED — 2 ...

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