DESCRIPTION

· The LS7866 is a monolithic CMOS 32-bit counter, programmable to operate in 8-bit, 16-bit, 24-bit, or 32-bit modular structures.

· It interfaces directly with quadrature clocks and index markers from incremental encoders.

· Programmable modes include X1/X2/X4 quadrature or bi-directional non-quadrature, combinable with Free-Run, Non-Recycle, Mod-N, and Range-Limit modes.

· Functional modes are programmed via two control registers: MCR0 and MCR1.

· It features an I2C standard serial bus in 7-bit address format for communication.

FEATURES

· Operating voltage: 3V to 5.5V.

· Up to 30MHz count frequency.

· Dual Mode-registers for functional programmability.

· Dual 32-bit comparators and Input Data registers for dual target counts.

· 32-bit latch for counter upload.

· Dual Status registers for dynamic and freeze-frame status.

· Quadrature A, B, and Z inputs with digital filters.

· Programmable quadrature or non-quadrature input modes.

· 8-bit, 16-bit, 24-bit, or 32-bit programmable configurations.

· Up to 400 KHz I2C clock speed.

· 3 selectable address pins for up to 8 devices on the bus.

· Write-All addressing mode for writing to all devices simultaneously.

· Available in 14-pin SOIC and TSSOP packages.

APPLICATIONS

· Suitable for systems requiring precise counting and position sensing, such as robotics and automation.

· Ideal for applications needing integration with incremental encoders for motion control.

· Useful in environments where multiple devices need to be controlled via a single I2C bus.

· Applicable in scenarios requiring flexible counter configurations and programmable modes for diverse operational needs.