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PDF ZEN2041F Data sheet ( Hoja de datos )
| Número de pieza | ZEN2041F | |
| Descripción | Programmable Universal Counter | |
| Fabricantes | Zenic | |
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ZEN2041F
P ROGRAMMABLE UNIVE RSAL COUNTE R
Description
ZENIC ZEN2041F is a pr ogr a m m a ble u n iver sa l cou n t er LSI.
TH E ZEN2041F cou n t s ph a se-sh ift ed sign a ls a n d u p/down pu lse sign a ls, gen er a t ed fr om r ot a r y en coder s or
lin ea r sca les.
Sin ce t h e cou n t er r espon se speed is a s h igh a s 20MH z(MAX),t h e ZEN2041F is u sed in a va r iet y of h igh speed
ser vices in clu din g digit a l ser vo con t r ol a n d pr ecision m ea su r em en t .
TH E ZEN2041F is pr ovided wit h a fu n ct ion wh ich m on it or s t h e in pu t sign a ls a n d det ect s a n y a bn or m a l in pu t
a ccom pa n ied wit h n oise or ot h er dist u r ba n ces, so t h a t t h e r elia bilit y of cou n t ed va lu es a r e secu r ed.
1. Features
Select a ble cou n t r esolu t ion a n d ch a n n els.
16bit Λ4ch . or 32bit Λ2ch . or
16bit Λ2ch . + 32bit Λ1ch .
Cou n t r espon se speed:
20Mcps.(MAX.) ( CLK f0 = 20MH z a t 50% du t y)
In pu t fr equ en cy of cou n t pu lse.
P h a se-sh ift ed sign a l in pu t :
A/B ph a se in pu t DC~ 5MH z.
(less t h a n f0 Λ1/4)
U p/down pu lse sign a l in pu t :
U p/down in pu t DC~ 10MH z
(less t h a n f0 Λ1/2)
CLK fr equ en cy DC~ 20MH z.
(MAX.:du t y r a t io 50%)
Dir ect ion r ecogn it ion for u p/down cou n t in g
Abn or m a l in pu t det ect ion cir cu it .
P r eloa d r egist er for t h e u p/down cou n t er .
La t ch r egist er for t h e u p/down cou n t er .
Refer en ce va lu e - cou n t va lu e coin ciden ce
det ect ion fu n ct ion .
On -ch ip st a t u s r egist er .
Cou n t er oper a t ion m ode.
E dge eva lu a t ion select ion : 1/2/4 .
(on ly for ph a se-sh ift ed sign a l in pu t )
Cou n t dir ect ion select ion .
Cou n t er clea r con t r ol:syn ch r on ou s/
a syn ch r on ou s clea r .
Select a ble 16/8 bit da t a bu s.
Low power CMOS t ech n ology.
TTL com pa t ible.
Sin gle 5V power su pply.
100 pin QFP.
Typical Applications
F or Mu lt i ch a n n el
NC m a ch in e t ools
P r ecision posit ion er s
Robot a r m con t r oller s
Speed con t r oller s for r ot a t in g m a ch in es
E lect r on ic ga u ges
F r equ en cy cou n t er s
Pin configuration
(Top View)
LT1
LD1
DI R1
MD1
EP1 / O1 2
VDD
P10
P11
C1
S0
LT0
LD0
DI R0
MD0
C0
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
5 0 MD2
4 9 DI R2
48
47
4 6 D1 5
4 5 D1 4
4 4 D1 3
4 3 D1 2
4 2 D1 1
4 1 VSS
4 0 VDD
3 9 D1 0
3 8 D9
3 7 D8
3 6 AD5
3 5 AD4
3 4 AD3
3 3 AD2
3 2 AD1
3 1 AD0
(Z2041B98)ZENIC Inc.
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ZEN2041F
P in Sym bol I/O
99 MD0
85 MD1 I
50 MD2
65 MD3
98 DIR0
84 DIR1 I
49 DIR2
64 DIR3
94 S0
I
63 S1
5 E00/O00
6 E01/O01
58 E20/O20
57 E21/O21 O
88 E10/O10
87 E11/O11
72 E30/O30
73 E31/O31
7 EP0/O02
86 EP1/O12 O
56 EP2/O22
74 EP3/O32
4
21
26
27
40
54 VDD -
71
76
77
90
3
9
28
29
41
53 VSS -
59
78
79
89
F u n ct ion s
MODE SELECTION :
O : P h a se-sh ift ed pu lse
1 : U p/Down pu lse
COUNTING DIRECTION
Refer t o [8. Cou n t in g Oper a t ion a n d Tim in g.].
COUNTER CONNECTION
Refer t o [3.5) Cou n t er u n it ].
COIN CIDE N CE DE TE CTION 00-31 / U N IVE RSAL OU TP U T 00-31
Refer t o [9. Coin ciden ce Det ect ion F u n ct ion .].
WINDOW OUTP UT 0-3 / U NIVE RSAL OU TP U T 02-32
Refer t o [9. Coin ciden ce Det ect ion F u n ct ion .].
Su pply volt a ge +5V
Gr ou n d 0V
(Z2041B98)ZENIC Inc.
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8. Counter operation and Timing
ZEN2041F
These signals are sampled by CLK.
RE SE T, P u lse in pu t (P 00-P 31), Clea r (C0-C3), Loa d da t a (LD0-LD3), La t ch da t a (LT0-LT3)
1) Cou n t in g oper a t ion
Ta ble.10 Cou n t in g dir ect ion
P h a se-sh ift ed pu lse (MDn ="L")
DIRn
Phase
Cou n t in g dir ect ion
1 Pn0 phase 90 advance Cou n t u p
Pn1 phase 90 advance Cou n t down
0 Pn0 phase 90 advance Cou n t down
Pn1 phase 90 advance Cou n t u p
U p/down pu lse (MDn ="H ")
DIRn Risin g edge
1 Pn0
Pn1
0 Pn0
Pn1
Cou n t in g dir ect ion
Cou n t u p
Cou n t down
Cou n t down
Cou n t u p
2) Cou n t t im in g ( Refer t o F igu r e.3-1 )
P h a se-sh ift ed pu lse
Cou n t in g con dit ion is depen d on t h e edge eva lu a t ion .
E dge eva lu a t ion Cou n t in g con dit ion
s in gle
Ch a n ge of P n 0 wh en P n 1="L"
dou ble
Ch a n ge of P n 0
quad
Ch a n ge of P n 0 or P n 1
U p/down pu lse
Wh en it is sa m pled t h e r isin g edge of pu lse in pu t , cou n t u p or down depen d on DIRn .
Don ’t ch a n ge t h e ot h er in pu t .
3) Abn or m a l in pu t
P h a se-sh ift ed pu lse
Th e defin it ion of a bn or m a l in pu t is t h e sim u lt a n eou sly ch a n gin g P n 0 wit h P n 1.
Ca u ses of a bn or m a l in pu t
* It ca n n ot be sa m pled beca u se t h e ch a n gin g t im e of in pu t is t oo sh or t .
* t h e t r a n sit ion st a t e is a bn or m a l beca u se t h e n oise is sa m pled.
U p/down pu lse
N o defin it ion
4) Clea r oper a t ion : Refer t o F igu r e.3-2.
* Asyn ch r on ou s clea r
Aft er t h e r isin g edge of Cn is det ect ed, t h e cou n t er is clea r ed.
* Syn ch r on ou s clea r
Aft er Cn ="H ",P n 1="L",a n d ch a n ge of P n 0 a r e det ect ed, t h e cou n t er is clea r ed.
5) Loa din g da t a , La t ch in g da t a oper a t ion : Refer t o F igu r e.3-3.
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(Z2041B98)ZENIC Inc.
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet ZEN2041F.PDF ] | |
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