LS7166 View Datasheet(PDF) - LSI Corporation

Part Name

Description

Manufacturer

LS7166

24-BIT QUADRATURE COUNTER

LSI Corporation  

(DATA-BUS) 8-15

I/O

BUFFER

D0 - D7

(CHIP SELECT INPUT) CS 2

(READ INPUT) RD 19

(WRITE INPUT) WR 1

(CONTROL /DATA INPUT) C/D 18

(COUNT INPUT) A 6

(COUNT INPUT) B 7

(AB GATE/LOAD LATCH) ABGT/RCTR 4

(LOAD CTR/LOAD LATCH) LCTR/LLTC 3

INPUT

BUFFER

AND

DECODE

LOGIC

(+5V) VDD 5

(GND) VSS 20

PR/OL

ADDRESS

FIGURE 8.

LS7166 BLOCK DIAGRAM

7166-110103-10

D0 -D4

D0, D6,D7

QR

D0 - D7

OCCR

D0 - D7

ICR

D0 - D7

MCR

OSR

CONTROL

LOGIC

STATUS

LOGIC

16 CY (CARRY OUT)

17 BW (BORROW OUT)

COMPARATOR

N1=N2

N1 N2

D0 -D7

PR0

B0 - B7

PR1

B8 - B15

PR2

B16 - B23

B0 - B23

PR/OL ADDRESS

D0 - D7

UP CLOCK

DN CLOCK

OL0

CNTR

Q0 -Q23

OL1

OL2

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