ZEN2011P Zenic, ZEN2011P Datasheet - Page 2

• Manufacturer Part Number: ZEN2011P
• Description: Programmable Universal Counter
• Manufacturer: Zenic

www.DataSheet4U.com
2, Block diagram
LT
LD
C/D
WR
RD
CE
RE SE T
SE L0 SE L2
U D/AB
DIR
A/U P
B/DN
Z/CLR
CLK
VDD
VSS
~
Dir ect ion
r ecogn it ion
for u p/down
Com m a n d
decoder
AI
D7~D0
U P P U LSE
DOWN P U LSE
COUN TE R CLE AR
Mode 1
Com m a n d r egist er
Mode 0
Com m a n d r egist er
St a t u s r egist er
U p/down cou n t er
P r eloa d r egist er
(8bit )
(8bit )
(8bit )
(24bit )
(24bit )
- 2 -
N ot e:Block s m a r k ed(*) a r e va lid a t m ode 1 -
*
Mode 1
Refer en ce r eg. A
Com pa r a t or A
Refer en ce r eg. B
Com pa r a t or B
F u n ct ion
La t ch r egist er
(24bit )
(24bit )
(24bit )
(24bit )
(24bit )
con t r ol
*
*
*
E QA
E XTA
E XTB
E QB
ZEN2011P
ZENIC Inc.