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Part: MAX3100C
Category:
Communication
-> Transeivers
Description: Spi Microwire-compatible Uart in QSOP-16
Company: Maxim Integrated Products
Datasheet: Download MAX3100C datasheet File size : 259 kB
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Datasheet text preview:
19-1259; Rev 1; 12/01
SPI/Microwire-Compatible UART in QSOP-16
_______________General Description
The MAX3100 universal asynchronous receiver transmitter (UART) is the first UART specifically optimized for s m a l l microcontroller-based systems. Using an SPITM/MicrowireTM 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. I R - l i n k communication is easy with the MAX3100's infrared data association (IrDA) timing mode. The MAX3100 includes a crystal oscillator and a baudrate generator with software-programmable divider ratios for all common baud rates from 300 baud to 230k baud. A software- or hardware-invoked shutdown lowers quiescent 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-handshaking 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.
____________________________Features
o 16-Pin QSOP Package (8-pin SO footprint): Smallest UART Available o Full-Featured UART: --IrDA SIR Timing Compatible --8-Word FIFO Minimizes Processor Overhead at High Data Rates --Up to 230k Baud with a 3.6864MHz Crystal --9-Bit Address-Recognition Interrupt --Receive Activity Interrupt in Shutdown o SPI/Microwire-Compatible µC Interface o Lowest Power: --150µA Operating Current at 3.3V --10µA in Shutdown with Receive Interrupt o +2.7V to +5.5V Supply Voltage in Operating Mode o Schmitt-Trigger Inputs for Opto-Couplers o TX and RTS Outputs Sink 25mA for Opto-Couplers
MAX3100
______________Ordering Information
PART MAX3100CPD MAX3100CEE MAX3100EPD MAX3100EEE TEMP. RANGE 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 14 Plastic DIP 16 QSOP 14 Plastic DIP 16 QSOP
________________________Applications
Hand-Held 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
Typical Operating Circuit appears at end of data sheet.
__________________________________________________________Pin Configurations
TOP VIEW
DIN 1 DOUT 2 SCLK 3 CS 4 IRQ 5 SHDN 6 GND 7 14 VCC 13 TX 12 RX DIN 1 DOUT 2 SCLK 3 CS 4 N.C. 5 IRQ 6 SHDN 7 GND 8 16 VCC 15 TX 14 RX
MAX3100
11 RTS 10 CTS 9 8 X1 X2
MAX3100
13 RTS 12 N.C. 11 CTS 10 X1 9 X2
DIP QSOP SPI is a trademark of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp. ________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
SPI/Microwire-Compatible UART in QSOP-16 MAX3100
ABSOLUTE MAXIMUM RATINGS
VCC to GND .........+6V Input Voltage to GND (CS, SHDN, X1, CTS, RX, DIN, SCLK) ....-0.3V to (VCC + 0.3V) Output Voltage to GND (DOUT, RTS, TX, X2) ......-0.3V to (VCC + 0.3V) IRQ .........-0.3V to 6V TX, RTS Output Current ....100mA X2, DOUT, IRQ Short-Circuit Duration (to VCC or GND) .........Indefinite Continuous Power Dissipation (TA = +70°C) Plastic DIP (derate 10.00mW/°C above +70°C) .......... 800mW QSOP (derate 8.30mW/°C above +70°C) ............667mW Operating Temperature Ranges MAX3100C_ _ ......0°C to +70°C MAX3100E_ _ .........-40°C to +85°C Storage Temperature Range .... -65°C to +160°C Lead Temperature (soldering, 10sec) .... +300°C
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
(VCC = +2.7V to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are measured at 9600 baud at TA = +25°C.) PARAMETER Input High Voltage Input Low Voltage Input Hysteresis Input Leakage Input Capacitance OSCILLATOR INPUT (X1) Input High Voltage Input Low Voltage Input Current Input Capacitance OUTPUTS (DOUT, TX, RTS) Output High Voltage Output Low Voltage Output Leakage Output Capacitance IRQ OUTPUT (Open Drain) Output Low Voltage Output Leakage Output Capacitance POWER REQUIREMENTS VCC Supply Current in Normal Mode VCC Supply Current in Shutdown Supply Voltage 2 ICC With 1.8432MHz crystal; all other logic inputs are at 0V or VCC SHDN bit = 1 or SHDN = 0, logic inputs are at 0V or VCC 2.7 VCC = 5V VCC = 3.3V 0.27 0.15 1 mA 0.4 10 5.5 µA V VOL ILK COUT ISINK = 4mA V I RQ = 5.5V 5 0.4 ±1 V µA pF VOH VOL ILK COUT ISOURCE = 5mA ISOURCE = 25µA, TX only TX, RTS: ISINK = 25mA DOUT, TX, RTS: ISINK = 4mA DOUT only, CS = VCC 5 VCC - 0.5 VCC - 0.5 0.9 0.4 ±1 V V µA pF VIH VIL IIN CIN VX1 = 0V and 5.5V VX1 = 0V and 5.5V Active mode Shutdown mode 5 0.7 x VCC VCC / 2 VCC / 2 0.2 x VCC 25 2 V V µA pF SYMBOL VIH VIL VHYST IIL CIN 5 VCC = 3.3V 0.05 x VCC ±1 CONDITIONS MIN 0.7 x VCC 0.3 x VCC TYP MAX UNITS V V V µA pF LOGIC INPUTS (DIN, SCLK, CS, SHDN, CTS, RX)
ICC VCC
_______________________________________________________________________________________
SPI/Microwire-Compatible UART in QSOP-16
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +2.7V to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER AC TIMING (Figure 1) 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 DIN to SCLK Setup Time DIN to SCLK Hold Time SCLK Period SCLK High Time SCLK Low Time SCLK Rising Edge to CS Falling CS Rising Edge to SCLK Rising CS High Pulse Width Output Rise Time Output Fall Time tDV tTR tCSS tCSH tDO tDS tDH tCP tCH tCL tCS0 tCS1 tCSW tr tf TX, RTS, DOUT: CLOAD = 100pF TX, RTS, DOUT, IRQ: CLOAD = 100pF (Note 1) (Note 1) CLOAD = 100pF 100 0 238 100 100 100 200 200 10 10 CLOAD = 100pF CLOAD = 100pF, R C S = 10k 100 0 100 100 100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX3100
Note 1: tCS0 and tCS1 specify the minimum separation between SCLK rising edges used to write to other devices on the SPI bus and the CS used to select the MAX3100. A separation greater than tCS0 and tCS1 ensures that the SCLK edge is ignored.
CS tCSS tCH
··· tCSH ··· tDS tDH
tCSH SCLK
tCL
DIN tDV DOUT
··· tDO ··· tTR
Figure 1. Detailed Serial-Interface Timing
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