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32-Bit Quadrature Counter With I2C Interface(14-Pins)
LS7866-S, LS7866-TS, LS7866
Category: Incremental Encoder Interface, Counters
Status: In Production
Stock Availability: DIP, SOIC, TSSOP, In Stock
All of our Standard Products are RoHS Compliant
For pricing and availability, you may contact us, or request a quote. Most of our standard parts are available for purchase on Digi-Key, and through our Distributors.
Features:
• Operating voltage: 3V to 5.5V
• Up to 40MHz count frequency
• Dual Mode-registers for functional programmability
• Dual 32-bit comparators
• Dual 32-bit 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
• 14-pin SOIC and TSSOP packages
Description:
LS7866 is a monolithic CMOS 32-bit counter, programmable to operate in 8-bit, 16-bit, 24-bit or 32-bit modular structures. Inputs are provided to interface directly with the quadrature clocks and the index markers from incremental encoders. The programmable modes include: X1/X2/X4 quadrature or bidirectional non-quadrature. Either of these modes can further be combined with Free-Run, Non-Recycle, Mod-N and Range-Limit modes. The functional modes are programmed via two control registers: MCR0 and MCR1. An I2 C standard serial bus in 7-bit address format is provided for communicating with the LS7866.
Code
Package
Notes
P/N
RoHS Compliant Standard plastic DIP
1, 2, 3
P/N – S
RoHS Compliant Standard SOIC
1, 2, 3, 4
P/N – SW
RoHS Compliant Widebody SOIC option
1, 2, 3, 4
P/N – S14
RoHS Compliant 14-pin SOIC version of 8-pin part
1, 2, 3, 4
P/N – TS
RoHS Compliant TSSOP
1, 2, 3, 4
P/N – TS24
RoHS Compliant 24-pin TSSOP version of 20-pin part
1, 2, 3, 4
Example: LSxxxx-TS = the LSxxxx in the RoHS Compliant TSSOP package-type
Note 1: See Table for package body widths Note 2: Package outline drawings conform to JEDEC standards Note 3: Packages shipped in anti-static tubes Note 4: Tape and Reel option available. Contact factory for details
ADDITIONAL ORDERING OPTIONS: Probed Wafers (P/N-PW), Waffle Packed Die (P/N-WP)
Package Body Widths
# of Pins
P/N, -C, -CM mils
-S mils
-SW mils
-TS mils
8
300
150
–
–
14
300
150
–
173
16
300
150
300
173
18
300
300
–
–
20
300
300
–
173
24
600
300
–
173
28
600
300
–
173
38
–
–
–
173
40
600
–
–
–
48
–
–
–
240