MAX3100CEE Maxim Integrated Products, MAX3100CEE Datasheet

IC UART SPI/MICRWIRE COMP 16QSOP

MAX3100CEE

Manufacturer Part Number
MAX3100CEE
Description
IC UART SPI/MICRWIRE COMP 16QSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX3100CEE

Features
Low Power
Number Of Channels
1, UART
Fifo's
8 Byte
Protocol
RS232, RS485
Voltage - Supply
2.7 V ~ 5.5 V
With Irda Encoder/decoder
Yes
With False Start Bit Detection
Yes
With Cmos
Yes
Mounting Type
Surface Mount
Package / Case
16-SSOP (0.150", 3.90mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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The MAX3100 universal asynchronous receiver transmit-
ter (UART) is the first UART specifically optimized for
small microcontroller-based systems. Using an
SPI™/MICROWIRE™ interface for communication with
the host microcontroller (µC), the MAX3100 comes in a
compact 16-pin QSOP. The asynchronous I/O is suitable
for use in RS-232, RS-485, IR, and opto-isolated data
links. IR-link communication is easy with the MAX3100’s
infrared data association (IrDA) timing mode.
The MAX3100 includes a crystal oscillator and a baud-
rate generator with software-programmable divider ratios
for all common baud rates from 300 baud to 230k baud.
A software- or hardware-invoked shutdown lowers quies-
cent current to 10µA, while allowing the MAX3100 to
detect receiver activity.
An 8-word-deep first-in/first-out (FIFO) buffer minimizes
processor overhead. This device also includes a flexible
interrupt with four maskable sources, including address
recognition on 9-bit networks. Two hardware-handshak-
ing control lines are included (one input and one output).
The MAX3100 is available in 14-pin plastic DIP and small,
16-pin QSOP packages in the commercial and extended
temperature ranges.
SPI is a trademark of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.
________________________Applications
19-1259; Rev 2; 1/09
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.
Handheld Instruments
Intelligent Instrumentation
UART in SPI Systems
Small Networks in HVAC or Building Control
Isolated RS-232/RS-485: Directly Drives Opto-Couplers
Low-Cost IR Data Links for Computers/Peripherals
TOP VIEW
SHDN
DOUT
SCLK
GND
DIN
IRQ
CS
1
2
3
4
5
6
7
________________________________________________________________ Maxim Integrated Products
+
MAX3100
DIP
General Description
14
13
12
11
10
9
8
V
TX
RX
RTS
X1
X2
CTS
CC
*EP = EXPOSED PAD, CONNECT EP TO GROUND
N.C.
N.C.
N.C.
V
DIN
TX
CC
19
20
21
22
23
24
SPI/MICROWIRE-Compatible
+
18
1
17
2
TQFN-EP
MAX3100
16
3
15
4
♦ Small TQFN and QSOP Packages Available
♦ Full-Featured UART:
♦ SPI/MICROWIRE-Compatible µC Interface
♦ Lowest Power:
♦ +2.7V to +5.5V Supply Voltage in Operating Mode
♦ Schmitt-Trigger Inputs for Opto-Couplers
♦ TX and RTS Outputs Sink 25mA for Opto-Couplers
Typical Operating Circuit appears at end of data sheet.
____________________________Features
+ Denotes a lead(Pb)-free/RoHS-compliant package.
EP = Exposed pad.
MAX3100CPD+
MAX3100CEE+
MAX3100EPD+
MAX3100EEE+
MAX3100ETG+
14
5
—IrDA SIR Timing Compatible
—8-Word FIFO Minimizes Processor
—Up to 230k Baud with a 3.6864MHz Crystal
—9-Bit Address-Recognition Interrupt
—Receive Activity Interrupt in Shutdown
—150µA Operating Current at 3.3V
—10µA in Shutdown with Receive Interrupt
*EP
13
Overhead at High Data Rates
6
PART
12
11
10
9
8
7
N.C.
X1
X2
GND
SHDN
N.C.
UART in QSOP-16
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
DOUT
SHDN
SCLK
0°C to +70°C
0°C to +70°C
GND
N.C.
DIN
IRQ
CS
Ordering Information
1
2
3
4
5
6
7
8
Pin Configurations
+
MAX3100
QSOP
14 Plastic DIP
16 QSOP
14 Plastic DIP
16 QSOP
24 TQFN-EP*
PIN-PACKAGE
16
15
14
13
12
11
10
9
V
TX
RX
RTS
N.C.
CTS
X1
X2
CC
1

Related parts for MAX3100CEE

MAX3100CEE Summary of contents

Page 1

... Shutdown with Receive Interrupt ♦ +2.7V to +5.5V Supply Voltage in Operating Mode ♦ Schmitt-Trigger Inputs for Opto-Couplers ♦ TX and RTS Outputs Sink 25mA for Opto-Couplers PART MAX3100CPD+ MAX3100CEE+ MAX3100EPD+ MAX3100EEE+ MAX3100ETG+ + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. Typical Operating Circuit appears at end of data sheet. ...

Page 2

SPI/MICROWIRE-Compatible UART in QSOP-16 ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................................+6V CC Input Voltage to GND (CS, SHDN, X1, CTS, RX, DIN, SCLK) ....-0. Output Voltage to GND (DOUT, RTS, TX, X2) ..............................-0. IRQ...........................................................................-0. ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V MIN MAX CC PARAMETER SYMBOL AC TIMING (Figure 1) CS Low to DOUT Valid High to DOUT Tri-State SCLK ...

Page 4

SPI/MICROWIRE-Compatible UART in QSOP-16 __________________________________________Typical Operating Characteristics (T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE 1000 1.8432MHz CRYSTAL 900 TRANSMITTING AT 115.2 kbps 800 700 600 500 400 300 V = 3.3V CC ...

Page 5

PIN TQFN-EP QSOP DIP ...

Page 6

SPI/MICROWIRE-Compatible UART in QSOP-16 (SOURCES RA/FE (MASKS) TRANSMIT-DONE (TM) DATA-RECEIVED (RM) INTERRUPT IRQ LOGIC PARITY (PM) FRAMING ERROR (RAM)/ RECEIVE ACTIVITY Figure 2. Functional Diagram The transmitter section accepts SPI/MICROWIRE data, formats it, and transmits it in ...

Page 7

RX A BAUD BLOCK Figure 3. Start-Bit Timing CS SCLK FEN SHDN DIN DOUT Figure 4. SPI Interface (Write Configuration) The receiver section receives data in ...

Page 8

SPI/MICROWIRE-Compatible UART in QSOP-16 MAX3100 Operations Table 1 shows write-configuration data. A 16-bit SPI/MICROWIRE write configuration clears the receive FIFO and the R, T, RA/FE, D0r–D7r, D0t–D7t, Pr, and Pt registers. RTS and CTS remain unchanged. The new configuration is ...

Page 9

Table 5. Bit Descriptions BIT READ/ POR NAME WRITE STATE B0–B3 w 0000 Baud-Rate Divisor Select Bits. Sets the baud clock’s value (Table 6). B0–B3 r 0000 Baud-Rate Divisor Select Bits. Reads the 4-bit baud clock value assigned to these ...

Page 10

SPI/MICROWIRE-Compatible UART in QSOP-16 Table 5. Bit Descriptions (continued) BIT READ/ POR NAME WRITE STATE Receiver-Activity/Framing-Error Bit. In shutdown mode, this is the RA bit. In normal operation, this is the FE bit. In shutdown mode, a transition on RX ...

Page 11

Interrupt Sources and Masks A Read Data operation clears the interrupt IRQ. Table 6 gives the details for each interrupt source. Figure 6 Table 6. Interrupt Sources and Masks—Bit Descriptions BIT MASK MEANING NAME BIT WHEN SET PM Pr Received ...

Page 12

SPI/MICROWIRE-Compatible UART in QSOP-16 Table 7. Baud-Rate Selection Table* BAUD BAUD DIVISION RATE RATIO (f OSC 1.8432MHz 0** 1 115.2k 57. 28.8k 0 ...

Page 13

V 470Ω DOUT V 470Ω SCLK V 2k DIN 470Ω CS +5V MAX253 TRANSFORMER DRIVER Figure 7. Driving Optocouplers ______________________________________________________________________________________ SPI/MICROWIRE-Compatible ISO +5V 2kΩ CC 6N136 DIN MAX3100 2kΩ CC 6N136 SCLK CC 470Ω 6N136 DOUT 2kΩ 6N136 ...

Page 14

SPI/MICROWIRE-Compatible UART in QSOP-16 + SCLK DIN MAX3100 DOUT GND Figure 8. Bidirectional Opto-Isolated Interface Table 8. Component and Supplier List FREQUENCY DESCRIPTION (MHz) Through-Hole Crystal 1.8432 (HC-49/U) Through-Hole 1.8432 Resonator Through-Hole Crystal 3.6864 (HC-49/US) SMT Crystal ...

Page 15

The MAX3100 X1 input can be driven directly by an external CMOS clock source. The trip level is approxi- mately equal connection should be made this mode TTL or ...

Page 16

SPI/MICROWIRE-Compatible UART in QSOP-16 DIRECT OPTO-COUPLER DRIVE MAX3221 8051 IRQ 22pF Figure 10. Bidirectional RS-232 IrDA Using an 8051 Interface to PIC Processor (“Quick Brown Fox” Generator) Figure 11 illustrates the use of the MAX3100 with the ® PIC . ...

Page 17

100kΩ Y/N 1μs Delay 100kΩ 1/2 STOP BITS 100kΩ 7/8 BITS 100kΩ B3 100kΩ B2 100kΩ B1 100kΩ B0 100kΩ Figure 11. Quick Brown Fox Generator ______________________________________________________________________________________ SPI/MICROWIRE-Compatible RB7 PIC16C54 RB6 RA0 DIN MAX3100 RB5 RA1 DOUT ...

Page 18

SPI/MICROWIRE-Compatible UART in QSOP-16 __________MAX3100 Synchronous-to-Asynchronous SPI UART at a Glance Table 9. Synchronous Data Input Format (DIN pin from microprocessor, SPI MOSI) Oper- ation Write FEN 1 1 SHDNi Config Read ...

Page 19

Table 11. Bit Definitions* Bit Register Bit Set (1) Name Disable FIFO FEN Config buffer Config SHDNi Shutdown Enable transmit- TM Config done interrupt Enable data- RM Config received inter- rupt Enable parity PM Config interrupt Enable framing- RAM Config ...

Page 20

SPI/MICROWIRE-Compatible UART in QSOP-16 Figure 12a. 8051 IrDA/RS-232 Code 20 ______________________________________________________________________________________ ...

Page 21

Figure 12b. MAX3100 Using PIC µC ______________________________________________________________________________________ SPI/MICROWIRE-Compatible UART in QSOP-16 21 ...

Page 22

SPI/MICROWIRE-Compatible UART in QSOP-16 Figure 12b. MAX3100 Using PIC µC (continued) 22 ______________________________________________________________________________________ ...

Page 23

Operating Circuit SPI/MICROWIRE μC ___________________Chip Information PROCESS: BiCMOS SUBSTRATE CONNECTED TO GND ______________________________________________________________________________________ SPI/MICROWIRE-Compatible UART in QSOP-16 MAX3100 DIN TX DOUT RX SCLK CTS CS RTS IRQ C1 C2 For the latest package outline information and land patterns, go ...

Page 24

... 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. 24 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

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