24-Bit x 4 Multi-Mode Counter
(48 Pins)

LS7566R-TS

Category: Incremental Encoder Interface, Counters

Status: In Production

Stock Availability: TSSOP

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:

• Up to 40MHz Count Frequency
• 3-State Octal I/O Bus
• Each of the four Binary Counters have independent Support Circuits: Comparators, Registers, Latches, etc.
Programmable count modes include: Quadrature (x1, x2, x4); Non-Quadrature (Up/Down); Free-Run, Non-Recycle, Modulo-N, Range-Limit
• 3V to 5.5V Operation

Description:

The LS7566R consists of four identical modules of 24-bit programmable counters with direct interface to incremental encoders. The modules can be configured to operate as quadrature clock counters or non-quadrature up/down counters. In both quadrature and non-quadrature modes, the modules can be further configured into free-running, non-recycle, modulo-n and range-limit count modes. The mode configuration is made through two 8-bit read/write addressable control registers, MDR0 and MDR1. Data can be ported to a 24-bit preset register PR, organized in directly addressable (write-only) byte0 [PR0], byte1 [PR1] and byte2 [PR2] segments. PR can be transferred to the 24-bit counter CNTR, either by instruction to CMR or by hardware input control. A 24-bit digital comparator perpetually checks for the equality of the CNTR and the PR and can be used to set an output flag when the equality occurs. For reading the CNTR, its instantaneous value can be transferred to a 24-bit output latch OL, either by instruction to CMR or by hardware input control. The OL in turn can be read in directly addressable (read-only) byte0 [OL0], byte1 [OL1] and byte2 [OL2] segments. An addressable (read-only) Octal status register STR, stores the count related status information such as CNTR overflow, underflow, count direction, etc. Data communication for read/write is performed through an Octal 3-state parallel I/O bus.

Ordering Info

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
-S
-SW
-TS

8

300

150

14

300

150

173

16

300

150

300

18

300

300

20

300

300

173

24

600

300

173

28

600

300

173

38

173

40

600

44

240

LSI/CSI