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Part: MAX7301ANI
Category:
Microcontrollers
Description: MAX7301 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port And 28-Port I/o Expander
Company: Maxim Integrated Products
Datasheet: Download MAX7301ANI datasheet File size : 569 kB
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Datasheet text preview:
19-2438; Rev 2; 2/03
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O Expander
General Description
The MAX7301 compact, serial-interfaced I/O expander (or general-purpose I/O (GPIO) peripheral) provides microprocessors with up to 28 ports. Each port is individually user configurable to either a logic input or logic output. Each port can be configured either as a push-pull logic output capable of sinking 10mA and sourcing 4.5mA, or a Schmitt logic input with optional internal pullup. Seven ports feature configurable transition detection logic, which generates an interrupt upon change of port l o g i c level. The MAX7301 is controlled through an SPITM-compatible 4-wire serial interface. The MAX7301AAX and MAX7301AGL have 28 ports and are available in 36-pin SSOP and 40-pin QFN packages, respectively. The MAX7301AAI and MAX7301ANI have 20 ports and are available in 28-pin SSOP and 28-pin DIP packages, respectively. For a 2-wire interfaced version, refer to the MAX7300 data sheet.
Features
o High-Speed 26MHz SPI-/QSPI-TM/MICROWIRETMCompatible Serial Interface o 2.5V to 5.5V Operation o -40°C to +125°C Temperature Range o 20 or 28 I/O Ports, Each Configurable as Push-Pull Logic Output Schmitt Logic Input Schmitt Logic Input with Internal Pullup o 11µA (max) Shutdown Current o Logic Transition Detection for Seven I/O Ports
MAX7301
Ordering Information
PART MAX7301ANI MAX7301AAI MAX7301AAX MAX7301AGL TEMP RANGE -40°C to +125°C -40°C to +125°C -40°C to +125°C -40°C to +125°C PIN-PACKAGE 28 DIP 28 SSOP 36 SSOP 40 QFN
Applications
White Goods Automotive Gaming Machines Industrial Controllers
Typical Operating Circuit
3V 36 V+ 47nF 39k 3 GND 2 GND 1 P4 32 P5 30 P6 28 P7 26 I/O 4 I/O 5 I/O 6 I/O 7 I/O 8 I/O 9 I/O 10 I/O 11 I/O 12 I/O 13 I/O 14 I/O 15 I/O 16 I/O 17 I/O 18 I/O 19 I/O 20 I/O 21 I/O 22 I/O 23 I/O 24 I/O 25 I/O 26 I/O 27 I/O 28 I/O 29 I/O 30 I/O 31
System Monitoring
MAX7301
ISET
P8 P9 P10
CHIP SELECT CLOCK IN DATA IN DATA OUT
35 33
CS SCLK 34 DIN 4 DOUT 31 P31 29 P30 27 P29 25 P28 24 P27 23 P26 22 P25 21 P24
P11 P12 6 P13 8 P14 10 P15 12 P16 13 P17 14 P18 15 P19 16 P20 17 P21 18 P22 19 P23 20
5 7 9 11
Pin Configurations appear at end of data sheet. SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products
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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.
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O Expander MAX7301
ABSOLUTE MAXIMUM RATINGS
Voltage (with respect to GND) V+ ...........-0.3V to +6V All Other pins......-0.3V to (V+ + 0.3V) P4P31 Current .......±30mA GND Current ............800mA Continuous Power Dissipation (TA = +70°C) 28-Pin PDIP (derate 20.8mW/°C above +70°C).........1667mW 28-Pin SSOP (derate 9.5mW/°C above +70°C) ..762mW 36-Pin SSOP (derate 11.8mW/°C above +70°C) .........941mW 40-Pin QFN (derate 23.25mW/°C above +70°C) .......1860mW Operating Temperature Range (TMIN, TMAX) ........-40°C to +125°C Junction Temperature ......+150°C Storage Temperature Range .....-65°C to +150°C Lead Temperature (soldering, 10s) .........+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
(Typical Operating Circuit, V+ = 2.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted.) (Note 1)
PARAMETER Operating Supply Voltage Shutdown Supply Current SYMBOL V+ ISHDN All digital inputs at V+ or GND All ports programmed as outputs high, no load, all other inputs at V+ or GND All ports programmed as outputs low, no load, all other inputs at V+ or GND All ports programmed as inputs without pullup, ports, and all other inputs at V+ or GND TA = +25°C TA = -40°C to +85°C TA = TMIN to TMAX TA = +25°C TA = -40°C to +85°C TA = TMIN to TMAX TA = +25°C TA = -40°C to +85°C TA = TMIN to TMAX TA = +25°C TA = -40°C to +85°C TA = TMIN to TMAX 110 170 180 Operating Supply Current (Output High) IG P O H CONDITIONS MIN 2.5 5.5 TYP MAX 5.5 8 10 11 230 250 270 210 230 240 135 140 145 µA µA µA µA UNITS V
Operating Supply Current (Output Low)
IGPOL
Operating Supply Current (Input)
IGPI
INPUTS AND OUTPUTS Logic High Input Voltage Port Inputs Logic Low Input Voltage Port Inputs Input Leakage Current GPIO Input Internal Pullup to V+ Hysteresis Voltage GPIO Inputs VIH VIL IIH, IIL IPU VI GPIO outputs, ISOURCE = 2mA, TA = -40°C to +85°C GPIO outputs, ISOURCE = 1mA, TA = TMIN to TMAX (Note 2) V+ 0.7 V V+ 0.7 GPIO inputs without pullup, VPORT = V+ to GND V+ = 2.5V V+ = 5.5V -100 12 80 ±1 19 120 0.3 0.7 V+ 0.3 V+ +100 30 180 V V nA µA V
Output High Voltage
VOH
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4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O Expander
ELECTRICAL CHARACTERISTICS (continued)
(Typical Operating Circuit, V+ = 2.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted.) (Note 1)
PARAMETER Port Sink Current Output Short-Circuit Current Input High-Voltage SCLK, DIN, CS Input Low-Voltage SCLK, DIN, CS Input Leakage Current SCLK, DIN, CS Output High-Voltage DOUT Output Low-Voltage DOUT SYMBOL IOL IO L S C VIH VIL IIH, IIL VOH VOL ISOURCE = 1.6mA ISINK = 1.6mA -50 V+ 0.5 0.4 VPORT = 0.6V Port configured output low, shorted to V+ V+ 3.3V V+ > 3.3V CONDITIONS MIN 2 2.75 1.6 2 0.6 +50 TYP 10 11 MAX 18 20 UNITS mA mA V V nA V V
MAX7301
TIMING CHARACTERISTICS (Figure 3)
(V+ = 2.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted.) (Note 1)
PARAMETER CLK Clock Period CLK Pulse Width High CLK Pulse Width Low CS Fall to SCLK Rise Setup Time CLK Rise to CS Rise Hold Time DIN Setup Time DIN Hold Time Output Data Propagation Delay Minimum CS Pulse High SYMBOL tCP tCH tCL tCSS tCSH tDS tDH tDO tCSW CLOAD = 25pF 19 CONDITIONS MIN 38.4 19 19 9.5 0 9.5 0 21 TYP MAX UNITS ns ns ns ns ns ns ns ns ns
Note 1: All parameters tested at TA = +25°C. Specifications over temperature are guaranteed by design. Note 2: Guaranteed by design.
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