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Product ReleaseLSI/CSI's LS7366 32-bit Quadrature Counter with Serial (SPI) Interface Offers Multi-mode Programmability The LS7366 is an Integrated Circuit for decoding and counting quadrature clocks directly from Incremental Encoders. It provides for a dedicated solution to position and displacement tracking at 40x106/sec line rate (at 5V) from the encoder and a count limit of 232. Its serial interface (SPI) greatly reduces the required IO wire count as compared to a parallel bus structure. It can also operate with non-quadrature clock signals and provides various counting modes for signal conditioning. The LS7366 operates over the voltage range of 3V to 5.5V.Programming of the LS7366 and all communications between itself and a host controller are made with four simple instructions: READ_reg, WRITE_reg, LOAD_reg and CLEAR_reg. The functional modes are controlled with two bytes of data written into two on-chip Mode Registers. The configurable modes are: -Quadrature/non-quadrature count inputs -Quad cycle resolution selection by factor of x1, x2 or x4 -Modulo-n counting for programmable frequency generation -Range-limit counting for Limit-switch emulation -Single-cycle counting -1-Byte/2-Byte/3-Byte/4-Byte counter modes with auto-adjust of IO byte count. The Count related status is stored in a Status register. A 32-bit Input Register along with a 32-bit Comparator is provided for comparing a target value with the instantaneous count. Two maskable output Flags are also provided for signaling count related events. The Index and the Quadrature inputs are digitally filtered for noise suppression. The LS7366 is offered in Standard and RoHS compliant 14-Pin DIP, SOIC and TSSOP packages. Pricing is $1.60 in 1k quantity and availability is stock to 4 weeks. LSI/CSI product datasheets can be downloaded directly from our website, www.lsicsi.com. Price and delivery confirmation can be obtained by calling 631-271-0400 or sending e-mail to sales@lsicsi.com. In addition to its line of Standard Product ICs, LSI/CSI has been producing turnkey, Mixed-Signal Full Custom ICs for a broad range of industries since 1969. |
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LSI/CSI introduces LS7566R, the latest addition to its incremental encoder interface family of ICs. It provides an efficient hardware solution for extracting position data directly from the quadrature outputs of as many as four encoder units. The input quadrature clocks from encoders are digitally filtered for elimination of noise and errors arising out of encoder dither, providing high level of reliability. Communications to host processors are facilitated by a 3-state octal bus and an interrupt protocol with selections from a pool of marker flags.
The LS7166 is a programmable quadrature counter IC providing an efficient hardware solution for acquiring position data directly from incremental encoders. Acting as a peripheral device, it can relieve the host processor of the time intensive task of tracking the encoder motion clock by clock, allowing the computational resources to be allocated for processing the collected data. The IC is programmable to function in several counting and input/output modes, configurable by four write accessible mode control registers. A 3-state octal bus facilitates communication with host processors. LS7166 includes the following features: • 24-bit up/down counter for accumulating encoder positional data • 24-bit input register along with its companion 24-bit comparator for target position
The LS7541 is a cost-effective Step Dimmer CMOS IC capable of producing one, three or four-step lighting sequences. The LS7541 is a new addition to a family of Lighting Control ICs offered by LSI/CSI, a Melville, NY Company. The LS7541 is the main component for built-in or screw-in touch-adapter lamp modules that convert any metallic part of a lamp to a touch pad for control of lighting intensity. The AGC (Automatic Gain Control) feature of the LS7541 allows the modules to convert any size lamp to touch control, independent of line plug polarity. The touch-adapter modules provide lamp owners with ease of use and energy savings while eliminating the need for costly multi-filament bulbs. Touch-adapter modules compatible with 50Hz/60Hz AC Line frequencies and any AC Line voltage can be produced using the LS7541.
