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phone: 360.260.2468
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sales: 800.736.0194
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fax: 360.260.2469
email: sales@usdigital.com
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website: www.usdigital.com
11100 ne 34th circle
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vancouver, washington 98682 USA
LS7166
Encoder to Microprocessor Interface Chip
Chips
The
LS7166
is an LSI monolithic CMOS building block useful in motion control
applications. The 24-bit multi-mode counter register and logic enables a microproces-
sor to track the speed, direction, and position of an optical incremental shaft encoder.
In addition to an 8-bit data bus, programmable realtime inputs and outputs are provided
for hardware based control functions and status indication.
Note:
US Digital has already designed the ICs on this data sheet into various products.
Please see the
PC7166
,
AD4-A
and
AD6
data sheets.
Features:
X4 or X1 resolution multiplication.
Preloadable 24-bit up/down counter.
Choice of two 20-pin packages: SOIC surface mount or DIP (600mil).
X1 or X2 or X4 resolution multiplier.
Binary or BCD.
Divide-by-N.
24-Bit comparator register.
4 control registers.
Readable status register.
8-Bit tri-state I/O bus.
DC to 10 MHz count frequency.
Latched counter outputs.
Input/output TTL & CMOS compatible.
5 volt operation.
200 uA supply current.
No external clock required.
Block Diagram of Counter & Registers:
Ordering Information:
Description:
Parameter
Operating temperature
Storage temperature
Voltage at any input
Supply voltage (VCC)
Min.
0
-65
-.5
Max.
70
150
VCC+.5
7
Units
°C
°C
Volts
Volts
Absolute Maximum Ratings:
Technical Data, Rev. 01.22.01, January 2001
All information subject to change without notice.
DIP Package (300mil):
LS7166-DIP
Surface Mount Package:
LS7166-SOIC
Price:
$11.65 / 1
$9.35 / 25
$7.45 / 100
$6.35 / 500
$5.40 / 1k