E-Lab.

 

 

 

 

The EDE1144 Keypad Encoder IC is designed to interface a matrix-type 4 row x 4 column (16 key or less) keypad to a microcontroller or other host processor. A one-wire serial or four-wire parallel interface returns the keypress data and can be used in conjunction with a 'data valid' signal for polled or interrupt-driven applications. The EDE1144 provides enhanced keypad features such as contact debouncing and key auto-repeat in an easy-to-use package that will lower software overhead in the host microcontroller and reduce the I/O pin requirements from eight to one, frequently resulting in the use of a less costly host microcontroller in your design.

The EDE1188 Keypad Encoder IC is designed to interface a matrix-type 8 row x 8 column (64 key or less) keypad to a microcontroller or other host processor. A one-wire serial or eight-wire parallel interface returns the keypress data and can be used in conjunction with a 'data valid' signal for polled or interrupt-driven applications. The EDE1188 provides enhanced keypad features such as contact debouncing and key auto-repeat in an easy-to-use package that will lower software overhead in the host microcontroller and reduce the I/O pin requirements from sixteen to one, frequently resulting in the use of a less costly host microcontroller in your design.

Our Stepper Motor Controller IC, the EDE1200, is available now for shipping. The EDE1200 Unipolar Stepper Motor IC is a 5 volt, 18 pin device designed to interface a logic-level input byte to a stepper motor. The EDE1200 is capable of automatically controlling a stepper motor in 'RUN' mode and of external pulsing in 'STEP' mode. Directional control is available, as well as both full and half-stepping for increased control resolution. The TTL/ CMOS level outputs sequence the stepper drive components, which consist of either four power transistors or a transistor array IC. Both setups are illustrated in our datasheet, and we offer component parts kits for these two arrangements as well.

Our Bi-Polar (4 wire) Stepper Motor Controller IC, the EDE1204, is available immediately for shipping. The EDE1204 Bi-Polar Stepper Motor IC is a 5 volt, 18 pin device designed to control any bi-polar stepper motor. The EDE1204 is capable of automatically turning a stepper motor in 'RUN' mode and of external pulsing in 'STEP' mode. Directional control is available, as well as both full and half-stepping for increased control resolution. The TTL/ CMOS level outputs sequence the stepper drive components, which consist two H-Bridges - either from discrete transistors or using the L293 Dual H-Bridge IC. Complete hookup schematics are contained in the datasheet.

A complete chopper drive system in a 1.75" PowerCube™ package!

20 Amp H-Bridge DC Motor Controller Module

The EDE2008 debounces up to eight independent pushbuttons, operating in both directions for active high and active low inputs. Working with both mechanical and membrane buttons, the EDE2008 eliminates all contact bounce noise and glitch activity to provide single clean, stable pulse to the host microcontroller.

The EDE2108 emulates a mechanical 1-ox-x assembly using standard momentary pushbuttons as inputs. The active high output corresponds to the most recent button pressed. Two versions of this IC are available: the 2108A, in which one channel is always active, and the 2108D, in which pressing the button of the currently active channel turns the output off. The EDE2108 works with standard momentary or membrane pushbuttons and allows the replacement of costly mechanical assemblies in selectoin circuitry. Outputs are clean, debounced signals..

The EDE2108 emulates a mechanical 1-ox-x assembly using standard momentary pushbuttons as inputs. The active high output corresponds to the most recent button pressed. Two versions of this IC are available: the 2108A, in which one channel is always active, and the 2108D, in which pressing the button of the currently active channel turns the output off. The EDE2108 works with standard momentary or membrane pushbuttons and allows the replacement of costly mechanical assemblies in selectoin circuitry. Outputs are clean, debounced signals.

The EDE2208 IC converts momentary pushbuttons into latching (toggle) outputs. Eight independent channels provide latched on, latched off function when pulsed by their respective momentary input. Working with all mechanical and membrane buttons, the EDE2208 provides glitch-free, clean toggles that are ideal for status indication or microprocessor input.

The EDE300 Parallel/ Serial Transceiver IC is a 5 volt, 18 pin device designed to conveniently convert 8-bit parallel data into serial format and vice-versa. The EDE300 is ideal for logging data to a PC, controlling hardware via the PC serial port, communicating 8-bit data via a serial connection, and expanding the I/O capabilities on microcontrollers and Stamps. The EDE300 is BAUD-selectable, offering both 2400 and 9600 BAUD communication. PC connection requires the use of a voltage level shifter such as the MAX233. The EDE300 can be configured as either a half-duplex transmitter, a half-duplex receiver, or a half-duplex bi-directional transceiver.

The FT609 provides a new simple way of controlling Stepper Motors. Stepper Motors have traditionally been favored because of their exact positioning characteristics, but the electronics required to drive them has always been complex. The FT609 will allow you to use stepper motors in computer driven products without the complexities. A simple two IC solution with a miminum number of additional componets provides a rich set of control functionallity with few headaches. The FT609 is a stepper logic controller. It will completely control a stepper motor through one 2400 baud line. The FT609 does not need any external components except a driver circuit for the stepper motor coils. The FT609 does not have the high current capacity to directly drive the stepper motor, therefore a driver circuit such as a L293 (Push-Pull four channel driver), UND2540 (Quad Darlington Power Driver) or a transistor circuit is needed. FT609 Features: Only one serial input line to control all aspects of the FT609. Variable stepping speeds from .417 milliseconds to 27.3 seconds. Directional control. Has a single Stepping Mode. Has count function that will step the motor the exact number of steps needed. Has a home pin function that will automatically stop on home pin or step a certain number of steps before stopping. Two modes, automatically shut off stepper motor current when not stepping and constant stepper motor current. Automatic ramp up and ramp down functions. This allow for the gradual increase/decrease in stepping times to accommodate large loads or high speeds. Three different stepping sequences Wavedrive, Twophase, and Halfstep.

The FT639 is an RC servo controller chip. The FT639 will control five radio-controlled servos through one 2400 baud RS232 serial line, such as the one found on a personal computer. Radio control servo motors are used in remote control model airplanes, cars, and boats. They are widely available and can be used in robotics, automation, animation, and many other tasks. The problem with using RC servo motors in the past was controlling them. With the FT639 this is no longer a problem. It is possible now to control five RC servo motors with just one 2400 baud serial line. Each of the five RC servos is independently controlled. FT639 features: Control up to five servos Two modes - 256 positions in 0-90 deg or 0-180 deg Can set servo start position before powering servos Controlled through a 2400 baud serial line Eight pin chip No external components needed for 0-5V serial line and only 2 resistors and a diode for standard RS232 line

The FT649 is an eight pin chip that can send commands from five of its pins. It is controlled via a 2400 baud serial line. The output on each pin can be V++, ground, or the input to another device (like an FT639 or FT609). When the FT649 is used with 5 FT639 it is able to control up to 25 RC servos through a single serial line. It can be made to control up to 5 stepper motors in a similar fashion with the FT609, or some combination of servos and stepper motors. Several applications could benefit from more that five servos or 1 stepper motor. Examples include a six-legged robot, and animatronics. For instance, one of the pins could be used to drive an FT639, another to control an FT609 while the other three pins act to control DC motors, solenoids, or simply drive LEDs. Any combination of pin configurations is permitted. FT649 features: Control up to five FT639 or FT609 chips allowing the independent control of up to 25 servos or 5 stepper motors. Controlled through a 2400 baud serial line Eight pin count chip No external components needed for 0-5V serial line and only 2 resistors and a diode for standard RS232 line

The EDE702 Serial to LCD Interface IC was created in response to numerous requests for a low-cost, production version of our popular EDE700 LCD IC. With a few less-needed features removed, such as row shift-up and character readback, the EDE702 is able to meet the needs of nearly all designs requiring a text liquid crystal display. In addition, a serially-addressable digital output pin and 4 MHz operation make the EDE702 ideally suited for embedded LCD interfacing.

The EDE707 Octal Seven-Segment LED Display Decoder IC is a 5 volt, 28 pin device designed to control up to eight 7-segment LED displays simultaneously. Working with both common-anode and common-cathode displays, the EDE707 incorporates features such as a full Hexadecimal character set (0123456789AbCdEF), built-in counter functionality, leading zero blanking, display blanking, increment & decrement commands, and digit-selectable loading. Data is written to the EDE707 via a 4-bit bus and a latch signal.

The EDE747 next-generation seven segment display driver translates a 4-bit input into 0-9,A-F outputs and directly drives segments. Built-in counter functionality provides up/down counting as well as under/overflow flags for cascadign to make larger counters. An extended character set (64 characters in all) provides upper/lowercase alphabet symbols.

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