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1 d e c e m b e r 1 2 , 1 9 97 u630h04 preliminary fe a t u r e s p h i gh - p e r f o rm a n c e c m os n o n v o- l a t i l e s t a t ic ram 5 1 2 x 8 b i ts p 2 5 a n d 4 5 n s a c c es s t i m e s p 1 2 a n d 2 5 n s o u t p u t e n a b l e acc e s s t i m e s p un l i m i t e d r ea d a n d w r i t e t o sram p h a rd w a r e s t or e i n i t i a t i o n ( s t ore c y c l e t i m e < 1 0 m s) p a u t o m a t i c s t o r e t i m i ng p 10 5 s t ore c y c l es to ee p r om p 1 0 y e a r s d a t a r e t e nt i on in ee p r o m p a u t o m a t i c r e ca l l o n p o w e r up p h a r d w a r e reca l l in i t i a t i o n (reca l l c y cl e t i m e < 2 0 m s) p u n l i m i t e d rec a l l c y c l e s f r o m ee p r o m p s i n g l e 5 v 10 % op e r a t i o n p o p e r a ti n g t e m p e r a t u r e r a n g e s : 0 t o 7 0 c - 4 0 t o 85 c p cecc 9 0 0 0 0 q u a l i t y s t a n d a rd p e s d c ha r a ct e r i z a t i o n a c c o rd i n g m i l s t d 8 8 3 c m3 0 1 5 . 7 - h b m p p a c k a g e s : pd i p28 ( 3 0 0 m i l ) p d i p2 8 ( 6 0 0 m i l) sop 2 8 ( 3 0 0 m i l) de s c r i pti o n the u 6 3 0 h 0 4 h a s t w o s e p a r a t e mo d e s o f o p e r a t i o n : s r a m m o de a n d n o n v o l a t i l e m o d e , d e t e r m i ned b y t h e st a t e o f t h e n e p i n . i n sr a m mo d e , t h e m e mo r y o p e- r a t e s a s a n o r d i n a r y s t a t i c r a m . in n o n v o l at i l e o p e r a t i o n, d a t a i s t r a n s - f e r r e d i n p a r a l l e l f r o m s ram t o e eprom o r f r o m e e prom t o s ra m . in t h is m o d e sram fu n c t i o n s a r e d is a b l e d . the u 6 3 0 h04 is a f a st s t a t ic ram ( 2 5 a n d 45 n s ) , w i th a n o n v o l a t i l e e l e c t ric a l l y e r a s a b l e prom ( e epro m ) e l e m e n t i n c o r p o r a t e d i n e a c h st a tic m e m o r y c e l l. t h e s ra m c an b e r e a d a n d w r i tt e n an u n l i m i t e d n u m b e r o f t i m e s , w h i l e i n d e p e n d e n t n o n v o l a t i l e d a t a r e s i - d e s i n eepro m . d a t a t r a n s f e r s f r o m t h e s ram t o t h e ee p rom (t h e s t o r e o p e r a t i o n ), o r f r om t h e eeprom t o t h e sram (t h e reca l l o p e r a t i o n ) a r e i n i t i a t e d th r o u gh t h e st a t e o f t h e n e p i n. t h e u6 3 0h 0 4 c o m b i n e s t h e h i g h p e r f o rm a nce a n d e a se o f use o f a fast sram w i t h n o n v o l a t il e d a t a i n t e g ri t y . once a s t ore c y c l e i s i n i t i a t e d , fu r t h e r i n p ut or o u t p u t a r e d is a b l e d u n til t h e c y cle is c o m p l e t e d . i n t e r n a l l y , reca l l is a t w o st e p p r o c ed u r e . f ir s t , t h e s r a m da t a is c l e a r e d a n d s e c o n d , t h e n o n v o l a- ti l e i n f or m a ti o n i s t r a n sf e rr e d i n t o t h e s r a m c e l l s. t h e r e call o p e r a ti o n in n o w a y a l t e rs t h e d a t a in t h e ee p rom c e l l s. t h e n o n v o l a t i l e d a t a c a n b e r e c al l e d a n u n l i m i t e d n u m be r o f ti m e s . hardstore 512 x 8 nvsram 1 ne v c c 28 2 n.c. w 27 4 a6 a8 25 5 a5 n.c . 24 3 a7 n.c . 26 6 a4 n.c . 23 7 a3 g 22 8 a2 n.c . 21 1 2 d q 1 dq 5 17 pin c o n f ig u r a t i o n 9 a1 e 20 1 0 a0 dq 7 19 1 1 d q 0 dq 6 18 1 3 d q 2 dq 4 16 1 4 vss dq 3 15 t op v i e w p d i p sop p i n des c ri p tion sig n al n a m e s i gn a l d e s cri p tion a 0 - a8 addres s i n p u ts d q0 - d q 7 d a t a i n/out e c h i p enable g o u t p ut en a b l e w write enable ne n o n v o l a tile e n a b l e v c c p o w er sup p ly volt a g e vss g rou n d
2 d e c e m b er 1 2 , 1 9 9 7 u630h04 preliminary o p er a ting m ode e ne w g dq0 - d q7 st a n d b y / n ot s e l e c t ed h *** h i g h -z i n t e r n a l r e a d l hhh h i g h - z r e ad l h h l d a t a ou t p u ts l o w - z w r i t e l h l * d a t a i n p uts h i g h -z t r u t h t a ble f o r sr a m o p e ra t ions b l o c k d i a gr a m a : s tr e ss e s gre a t e r t h a n t h o s e list e d u n d e r ? a b s o l u t e m a xim u m r a ti n gs m a y c a u s e perm a nen t d a m ag e t o t h e d e v i c e . t h i s i s a s t r e s s r a ti n g o n l y , a n d f u n c t io n a l o p e r a ti o n o f t h e d e vice a t c o n diti o n a b o v e t h o s e indi c a t e d in t h e o p e r a ti o n al s e c t io n s o f t h i s s pe c i fic a ti o n is no t impl i ed. e x p o s u re t o a b s o l u t e m a x i m u m r a t ing c o n d i t i o n s f o r e x t e n ded p e ri o d s m a y a f f ec t r e li a b ili t y . a b s ol u t e m a x i m u m r a ti n gs a sym b ol m i n. m a x . u n it p ow e r s u p p l y v o l t a g e v cc - 0 .5 7 v i n p u t v o l t a g e v i - 0 .3 v cc + 0 . 5 v out p u t v o l t a g e v o - 0 .3 v cc + 0 . 5 v p o w er d i s s i p a ti o n p d 1w o p e r a t i n g t e mp e r a t u r e c- t y p e k- t y p e t a 0 - 4 0 70 85 c c st o r a g e t e m p e r a t u r e t s t g - 6 5 1 5 0 c c h ar a ct e ri s tics all v o lt a g e s a re r e f e r e n c e d t o v ss = 0 v (gr o u n d ). all c h a ra c t e risti c s a re v a l id i n t h e p o w e r s u pply v o lt a ge r a nge a n d in t h e o per a t i n g t e mp e r a t ur e r an ge sp e ci f i e d . d y n a mi c m e a s u re m e n t s a re b a s e d o n a r i s e a n d f a l l t ime o f 5 n s , m e a s u r e d b e tw e e n 1 0 % a n d 9 0 % o f v i , a s w e l l a s inp u t l e v e l s o f v il = 0 v a n d v ih = 3 v . t h e timi n g r e f e r e n c e l e v e l o f a ll i n p u t a n d o u tp u t s ign a l s is 1 . 5 v , with t h e e x c e pti o n o f t h e t dis -tim e s a nd t en -tim e s, in w h ich c a s e s tr a n siti o n is m e a s u r e d 20 0 mv f r o m s t e a d y - s t a t e v o lt a ge. * h o r l co l umn deco d e r e e p rom array 16 x ( 32 x 8) s t o r e recall sr a m array 16 ro w s x (32 x 8 ) c o l u m ns g ne e w dq0 d q 1 d q 2 d q 3 d q 4 d q 5 d q 6 d q 7 c o l u m n i / o i nput b u f f er s s tore/ re c a l l co n t r o l a 0 a 1 a 2 a 3 a 4 v cc v ss a5 a6 a7 a8 v cc r o w d e c oder
3 d e c e m b e r 1 2 , 1 9 97 u630h04 preliminary b : i c c 1 a n d i c c 3 a re d e p e n d e n t o n o u tp u t l o adi n g a n d c y cle r a t e . t h e s p e c i f i e d v a l u e s a re o bt a i n e d with o u t pu t s u n l o a d e d. t h e c u r r e n t i c c 1 i s m e as ur e d f o r w r i t e / r e a d - r a ti o o f 1 / 2. c: i c c 2 i s t h e a v e r a g e c u rr e n t r e q u i r e d f o r t h e d u r a ti o n o f t h e s t o r e c y cl e ( s t o r e c yc l e t im e ) . d : b ringi n g e 3 v ih wil l n o t pr o d u c e s t a ndby c u rr e n t l e v e l s u n t il a n y n on v o l a tile c ycle in pr o gre s s h a s tim e d o u t . s e e m o de s e l e c t i on t a bl e . t h e c u rr e n t i c c (s b )1 is m e a s u r e d f or w r i t e /r e a d - ra t io o f 1 / 2 . d c ch a ra c teri s ti c s s y m b o l con d iti o ns c- t y pe k- t y pe u n it m i n . ma x . m i n . ma x . o p e r a ti n g s u p p l y cu r r e n t b i c c 1 v cc v il v ih t c t c = 5 . 5 v = 0 . 8 v = 2 . 2 v = 2 5 ns = 4 5 n s 90 75 95 80 ma ma a v e r a g e s u p p l y c u rr e n t d u r i n g s t o r e c i c c 2 v cc e w v il v ih = 5 . 5 v 3 v cc - 0 .2 v 3 v cc - 0 .2 v 0 . 2 v 3 v cc - 0 .2 v 6 7 m a s t a n d b y su p p l y cu r r e n t d ( c y cli n g t tl i n p ut l e v e ls) i c c(sb)1 v cc e t c t c = 5 . 5 v 3 v ih = 2 5 n s = 4 5 n s 30 20 34 23 ma ma a v e r a g e s u p p l y c u rr e n t a t t cr = 2 0 0 n s b ( c y cli n g c m os i n p u t l e v e ls) i c c 3 v cc w v il v ih = 5 . 5 v 3 v cc - 0 .2 v 0 . 2 v 3 v cc - 0 .2 v 15 15 m a s t a n d b y su p p l y cu r r e n t d ( s t a b l e c m os i n p ut l e v e ls) i c c (sb) v cc e v il v ih = 5 . 5 v 3 v cc - 0 .2 v 0 . 2 v 3 v cc - 0 .2 v 1 1 m a re c o m m e n d ed o p e rati n g c o n d itio n s s y m bol c o nd i tio n s m in. m ax . un i t p o w e r s u p p l y v o l t a g e v cc 4 .5 5 .5 v i n p u t l ow v o l t a ge v il -2 v a t p ulse w i d t h 1 0 ns p e r m i tt e d -0.3 0.8 v i n p u t h i g h v o l t a g e v ih 2 . 2 v cc + 0 .3 v
4 d e c e m b er 1 2 , 1 9 9 7 u630h04 preliminary sr a m m e m o r y op er a ti o n s e : p a r a m e t e r g u a ra nt e e d b u t n o t t e s t e d . f: d e v ic e i s c o n t i n u o u s l y s e l e c t e d w i t h e a n d g b o t h l o w . g : a ddre s s v a l i d p r i o r t o o r c o i n cid e n t with e tr a n siti o n l o w . h : m e as ur e d 2 0 0 m v fr o m s t e a d y s t a t e o u tp ut v o lt a g e . d c ch a ra c ter i sti c s s y m b o l co n di t io n s c- t y p e k- t y p e u n i t m i n . m ax. m i n . m a x . o u t p u t hi g h v o l t a ge o u t p ut l o w v o l t a g e v oh v ol v cc i oh i ol = 4 . 5 v = -4 ma = 8 m a 2 . 4 0 . 4 2 . 4 0 . 4 v v o u t p ut hi g h c urr e nt o u t p u t l o w c u rr e n t i oh i ol v cc v oh v ol = 4 . 5 v = 2 . 4 v = 0 . 4 v 8 -4 8 -4 m a ma i n p u t l e a k a g e c u r r ent hi g h l o w i ih i il v cc v ih v il = 5 . 5 v = 5 . 5 v = 0 v - 1 1 -1 1 a a o u t p ut l e a k a g e cur r e n t h igh a t thr e e- s t a t e - o u t p ut l o w a t t h r e e-s t a t e- o u t p ut i ohz i olz v cc v oh v ol = 5 . 5 v = 5 . 5 v = 0 v - 1 1 -1 1 a a no. s w it c hi n g c h ar a ct e ri s tics re a d cyc l e s y m b ol 2 5 45 u n it a l t . i e c m i n . m a x . m i n . m a x . 1 r ea d c y c l e t i m e f t avav t cr 25 45 n s 2 a d d r e ss acc e s s t i m e t o d a t a v a l i d g t a v q v t a ( a ) 2 5 45 ns 3 ch i p e n a b l e a c c e s s t i me t o d a t a v a l id t elqv t a (e) 2 5 45 ns 4 o u t p u t e n a b l e ac c e s s t i m e t o d a t a v a l id t g l qv t a(g) 1 2 25 ns 5e hig h t o out p u t i n h i g h -z h t ehqz t dis(e) 1 3 20 ns 6g high t o o u t p ut i n hi g h-z h t ghqz t dis(g) 1 3 20 ns 7e l o w t o o u t p ut i n l o w - z t elqx t e n (e) 5 5 n s 8g lo w t o o u t p u t i n l o w - z t g l qx t e n ( g ) 0 0 n s 9 out p u t h o l d t i m e af t er ad d r . c h a n g e g t ax q x t v ( a ) 3 3 n s 1 0 ch i p e n a b l e t o p ow e r act i v e e t el i c c h t pu 0 0 n s 1 1 ch i p d i s ab l e t o p ow e r s t an d by d, e t eh i c c l t pd 2 5 45 ns
5 d e c e m b e r 1 2 , 1 9 97 u630h04 preliminary high i mp e d a n ce o u t p u t d a ta v a l i d o u tp u t d a t a v a l i d r e a d cycle 1 : a i - co n trol l e d (d u ring re a d cycl e : e = g = v il , w = n e = v ih ) f t a ( a ) t cr t v ( a) aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa ai dqi o u t p u t r e a d cycle 2 : g -, e -c o ntr o ll e d ( d uri n g r e a d c y c le: w = n e = v ih ) g ai e g dqi o u tp u t t di s (e) t cr t a ( e) t e n (e) t e n (g) t a( g ) t d i s( g ) aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa i cc t pd t pu no. s w it c hi n g c h ar a ct e ris t ics w r i te c y c le sym b ol 2 5 4 5 u n it alt. #1 alt. #2 i ec m i n . m a x. m i n . m a x. 1 2 w r i t e c y c l e t i me t av a v t av a v t cw 2 5 45 ns 1 3 w r i t e p u l s e w i d t h t w l w h t w(w) 2 0 35 ns 1 4 w r i t e p u l s e w i d t h s e t u p t i m e t w l e h t s u ( w ) 2 0 35 ns 1 5 ad d r e ss s e t u p t i m e t a v w l t a vel t s u ( a -wh) 0 0 n s 1 6 a d d r e s s v a l i d t o e n d o f w r i t e t a v w h t a veh t s u ( a -wh) 2 0 35 ns 1 7 ch i p e n a b l e s e t u p t i m e t e l w h t s u (e) 2 0 35 ns 1 8 c h i p e n a b l e t o e n d of w r i t e t eleh t w(e) 2 0 35 ns 1 9 d a ta s e t u p t i m e to e n d o f w r i t e t d v w h t d v e h t su(d) 1 2 20 ns 2 0 d a t a h o ld t i m e a f t e r e n d o f w r i t e t w h d x t eh d x t h(d) 0 0 n s 2 1 ad d r e ss h o ld a ft e r end o f w r i te t wh a x t eh a x t h ( a ) 0 0 n s 2 2 w l o w t o o u t p u t i n h i g h - z h, i t w l qz t d i s( w ) 10 15 n s 2 3 w h i g h t o ou t p u t i n l ow - z t whqx t en( w ) 5 5 n s 1 2 9 1 3 4 5 7 6 8 10 11 t a ( a) 2 add r e s s v al i d a d dr e ss v a l i d a c t i ve s t a n d b y p r e vi o s d a t a v a l i d
6 d e c e m b er 1 2 , 1 9 9 7 u630h04 preliminary aaaa a aaa a aaa a aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a a aaaa a aaa a aaa a aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a a aaaa a aaa a aaa a aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a a l - t o h- l e v el u n d e f i n ed h - t o l- l e v el i : i f w i s l ow a n d w h e n e g o e s l o w , t h e o u t p u t s re m a i n i n t h e h igh imp e d a n c e s t a t e . j: e or w a n d n e m u st b e > v ih d u r i n g ad d r es s t ra n s i t i o n s. write c y c l e # 1 : w -c o ntr o ll e d j write cycle # 2 : e -c o ntr o ll e d j t su( a ) t h ( d) ai e w dqi i n p u t dqi o u t p u t t cw t w (e) t h( a ) t s u( d ) a d d r es s v a l i d i np u t d a ta v a l i d t s u ( w ) aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa 12 18 21 2 0 19 15 aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aa aa aa aa 14 high i mp e d an ce t h ( d) ai e w dqi i n p u t dqi o u tp u t t cw t s u (e) t h ( a) t w( w ) t s u (d) t d is( w ) t en( w ) a d d r e s s v a l i d i np u t d a ta v a l i d high i mp e d an ce aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa t s u( a - w h ) 12 16 13 19 2 0 23 21 aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aa aa aa aa 17 22 p r e vi o u s d a ta aaaa aaaa aaaa aaaa aaa aaa aaa aaa 15 t s u ( a )
7 d e c e m b e r 1 2 , 1 9 97 u630h04 preliminary non v o l a tile m e m o r y o p er a t i o n s k : t r es t o r e s t a r t s fr o m t h e time v cc r i s e s a b o v e v s w i t ch . s t o re c y cle i n h i b i t a nd a ut o m a t i c p o w e r u p rec a ll m o de s el e c t i o n * h o r l l: a n a u t o m a t i c r e c a l l al s o t a k e s pl a c e a t po w er u p , s t a rti n g w h e n v cc e x c e e d s v s w it c h a n d t a k e s t r es t o r e . v cc m u s t n o t dr o p bel o w v s w it c h o n c e i t h a s b e e n e x c e e d e d f o r t h e r e c a l l t o f u n c t i o n p r o p e r ly . no. s t ore cycle i nh i b it a nd aut o m a t i c p o w e r u p rec a ll sy m b ol m i n. m a x. u n i t alt. i e c 24 p o wer u p r e call d u r a t i o n k, e t r estore 6 5 0 m s l o w v ol t a g e t ri g g e r l e v el v sw i t c h 4 . 0 4 . 5 v e w g ne m ode p o w e r n o tes l h l l n o n v o l a t i l e reca l l acti v e l l l h l n o n v o l a t i l e s t o r e i c c 2 l l l h l h l * n o o p e r at i o n acti v e a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a v cc 5 . 0 v s to r e i n h i b i t p o w er up v swi t c h t restore reca l l 24 t
8 d e c e m b er 1 2 , 1 9 9 7 u630h04 preliminary s t o r e c y c l e s s t ore c y c l e : w -c o ntro l l ed o s t ore c y c l e : e - co n trol l ed o no . s t ore cycl e w - c ontr o ll e d sy m b ol m i n. m a x. u n i t alt. iec 25 s t ore c y c l e t i m e m t wlqx t d ( w ) s 10 ms 2 6 s t ore i n i t i a ti o n c y c l e t i m e n t wlnh t w(w)s 25 n s 27 ou t p u t d i s a b l e s e t u p t o ne f a ll t ghnl t s u (g)s 5 n s 28 n e s e t u p t n l wl t s u (n)s 5 n s 29 ch i p en a b l e s e t u p t e l w l t su(e)s 5 n s no . s t ore cycl e e -c o ntro l l e d sy m b ol m i n. m a x. u n i t alt. iec 30 s t ore c y c l e t i m e t e l q x s t d(e)s 10 ms 3 1 s t ore i n i t i a ti o n c y c l e t i m e t e l n h s t w (e)s 25 n s 32 ou t p u t d i s a b l e s e t u p t o e f a ll t g h e l t s u (g)s 5 n s 33 n e s e t u p t n l e l t s u (n)s 5 n s 34 wri t e e n a b l e s e t u p t w l e l t s u ( w ) s 5 n s aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aa aa aa aa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a t su ( g)s t su( n )s t w (w ) s t s u( e )s t d ( w)s t s u (n ) s t s u (g)s t s u (w ) s t w (e)s t d( e ) s h i g h i mp e d a n c e h i g h i mp e d a n c e ne g w e dqi o u tp u t aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aa aa aa aa ne g w e dqi o u tp u t 25 29 2 6 2 8 27 30 31 33 32 34 aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa
9 d e c e m b e r 1 2 , 1 9 97 u630h04 preliminary rec a l l cycles rec a l l cycle : ne -c o ntr o ll e d o rec a l l cycle : e -c o ntro l l e d o n o . rec a ll c y c l e ne - c o n trol l ed sym b ol mi n . ma x . u n i t a l t. i e c 3 5 reca l l c y c l e t i m e p t n l q x t d(n ) r 20 m s 3 6 reca l l i n i t i a ti o n c y cl e t i m e q t n l n h t w(n)r 25 ns 3 7 o u t p ut e n a b l e s e t u p t g l n l t s u (g)r 5 n s 3 8 w r i t e e n a b l e s e t u p t wh n l t s u ( w ) r 5 n s 3 9 ch i p e n a bl e s e t u p t el n l t su(e)r 5 n s 40 n e f a ll to o u t p u t i n a c t i v e t n l qz t d i s(n)r 25 n s n o . rec a ll c y c l e e - c o n trol l ed sym b ol m i n . ma x . u n i t a l t. i e c 4 1 reca l l c y c l e t i m e t e l q x r t d(e)r 20 m s 4 2 reca l l i n i t i a ti o n c y cl e t i m e t e l n h r t w (e)r 25 ns 43 n e s e t u p t nl e l t s u ( n ) r 5 n s 4 4 o u t p ut e n a b l e s e t u p t glel t s u (g)r 5 n s 4 5 w r i t e e n a b l e s e t u p t whel t s u ( w ) r 5 n s aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aa aa aa aa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aa aa aa aa aa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a ne g w e dqi o u tp u t ne g w e dqi o u tp u t t w (n)r t s u (g ) r t s u ( w )r t s u (e ) r t d ( n)r t di s (n)r t s u (n ) r t s u (g ) r t su ( w)r t w( e )r t d (e ) r high i mp e d an c e 36 37 38 40 3 5 39 41 42 43 45 44 h i gh i mp e d a n c e aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa
1 0 d e c e m b er 1 2 , 1 9 9 7 u630h04 preliminary rec a l l c y c le : g - c o n trol l ed o, r m: me a s u r e d w i t h w a n d n e b o t h r e t u r n e d h i g h , a nd g r e t u r n e d l o w . n o t e t h a t s t o re c y c l e s a re i n hibi t ed / ab o rt e d by v cc < v s w i tch ( s to r e i n h ibit ) . n: o n c e t w ( w)s h a s b ee n s a t i s f i e d b y n e , g , w a n d e , t h e s to r e c y c le i s c o mple t e d a u t o m a tic a ll y . a n y o f ne , g , w a n d e m ay b e u s e d to t e rmi n a t e t h e s t o re i n iti a t i o n c ycl e . o : if e is l o w f o r a n y p e ri o d o f time in w h ich w is h i g h w hile g a n d n e a re l o w , t h a n a r e c a l l c yc l e m a y b e i n i t i a t e d . f o r e -c o n tr o l l e d st o re d u ri n g t w (e)s w , g , n e h a v e to be st a t i c . p : m e a s ur e d w ith w a n d n e b o t h h i g h , a n d g a nd e l o w . q: o n c e t w ( n)r h a s b ee n s a t isfi e d by n e , g , w a n d e , t h e r e c a l l c y c l e i s c o mpl e t e d a u t o m a ti c ally. a n y o f n e , g o r e m a y be u s e d to t e rmi n a t e t h e r e c a l l i n i t i a t i o n c y c l e. r : if w i s lo w a t a n y p o i n t i n w h i c h b o t h e a n d n e a r e l o w a n d g is h i g h, t h a n a s t o re c y cle w i ll be ini t i a t e d i n st e a d o f a r e c a l l . n o . rec a ll c y cle g -c o ntro l l ed s y m b ol m i n . m a x . un i t alt. iec 4 6 rec a l l c y c l e t i m e t glq x r t d ( g ) r 20 m s 4 7 rec a l l i n i t i a t i o n c y c l e t i m e t glnh t w( g )r 25 n s 48 n e s et u p t n l gl t su(n)r 5 n s 49 wri t e e n a b l e s e t up t w hgl t s u ( w ) r 5 n s 50 c h ip e n a b l e s e t u p t elgl t s u (e)r 5 n s aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aa aa aa aa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aa aa aa aa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaa aaa aaa aaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa a a a a aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aa aa aa aa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aa aa aa aa ne g w e dqi o u t p u t t su ( n)r t s u (w ) r t s u (e)r t w (g ) r t d (g) r high i mped a n c e 48 47 49 50 46 aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa
1 1 d e c e m b e r 1 2 , 1 9 97 u630h04 preliminary a l l p i n s n o t u nd e r t e s t m u st be c o n n e ct e d w ith g r o u nd by c a p a c i t or s . c a p a c i tan c e e con d iti o ns s y m b o l m in. m a x . un i t i n p ut c a p a c i t a n ce v cc v i f t a = 5 .0 v = v ss = 1 m h z = 2 5 c c i 8 p f o u tp u t c a p acit a n ce c o 7 p f t e s t co n fi g urat i o n for f un c ti o n a l ch e c k v ih v il v ss v cc t 4 8 0 255 30 pf s v o si m u l t a neous m e as u r e- m e nt of al l 8 out put p i ns i npu t l e v e l ac c o r d i ng t o t he r e l e v ant t e s t m eas ur em ent d q 0 d q 1 d q 2 d q 3 d q 4 d q 5 d q 6 d q 7 s : i n m e a s u r e m e n t o f t d i s -tim e s a n d t en -tim e s t h e c a p a ci t a n c e is 5 p f . t: b e tw e e n v cc a n d v ss m u s t be c o n n e c t e d a h ig h fr e q u e n c y b y p a ss c a p a ci t or 0 .1 m f t o a v o i d dis t u r b a n c e s. 5 v a0 a1 a2 a3 a4 a5 a6 a7 a8 ne e w g esd c l a s s b l a n k > 2 0 0 0 v b > 1 0 00 v a c c e ss t i m e 2 5 = 2 5 ns 4 5 = 4 5 ns ( on special request) p a c k a g e o p e rat i ng t e m per a ture r a nge c = 0 t o 70 c k = -40 t o 85 c t h e d a t e o f m a n uf a ct u r e i s g i v e n b y t h e l a s t 4 d i g i t s o f t h e m a r k , t h e f irs t 2 d i g i ts i n d i c a t i on t h e y e a r , a n d t h e l a s t 2 d i gi t s t h e c a l e n d a r w e e k . d = pdip ( 3 0 0 m i l) d 1 = pdip ( 6 0 0 m i l) s = sop (3 0 0 m i l) t y p e i c co d e n u m b ers d u 6 3 0 h04 b 25 c e x a m p l e
1 2 d e c e m b er 1 2 , 1 9 9 7 u630h04 preliminary device o p er a tion t h e u 6 3 0 h04 h a s t w o s e p a r a t e m o d e s o f o p e r a t i o n: sram m o d e a n d n o n v o l a ti l e m o d e , d e t e r m i n ed b y t h e s t a t e o f t h e n e p i n. i n sram m o d e, t h e m e m o r y o p e ra- t e s a s a s t a n d a rd fast s t a tic ra m . in n o n v o l a t i l e m o d e , d a t a is tr a n s f e rr e d f r o m s ram t o e e prom (t h e s t ore o p e r a t i o n ) or f r o m e e prom t o sram (t h e reca l l o p e r a t i o n ). i n t h is m o d e sram f u nct i o n s a r e d i s a b l e d . sr a m re a d t h e u 6 3 0 h04 p erf o r m s a rea d c y c l e w h e n e v e r e a n d g a r e l o w w h i l e w a n d n e a r e h i gh. t h e a d d r e s s s p ecifi e d o n p i n s a 0 - a 8 d e t er m i n es w h ich o f t h e 5 1 2 d a t a b y t e s w il l b e a c c e s s e d . w h e n th e read is i n i t i a - t e d b y an a d d r e ss t r a nsit i o n , t h e o u t p u t s w i l l b e v a l i d a f t e r a de l ay o f t cr . if t h e read is i n i t i a t e d b y e or g , t h e o u t p u t s w i l l b e v a l i d a t t a (e) or at t a ( g ) , w h i c he v e r is l a t e r . t he d a ta o u t p u t s w i l l r e p e a t e d ly r e s p o n d t o a d d r e s s c h a n g e s w i t h i n t h e t cr acc e s s ti m e w i t h o u t t h e n e e d f o r t r a n s i t i o n on a n y c o n t r ol i n p u t p i n s, a n d w i l l r e m a in v a l id u n til a n ot h e r a d d r e ss ch a n g e o r u n til e or g is b r o u g h t h i gh o r w o r n e i s b r ou g h t l o w . sr a m wr i te a w r i t e c y cle i s p e r f o rm e d w h e n e v er e a n d w a r e lo w a n d n e is high. the a d d r e s s i n p u ts m u st be s t a- b l e pr i o r t o e n t e ri n g t h e writ e c y c l e a n d m us t r e m a i n s t a b l e u n t i l e i t h e r e or w g o es h i gh at t h e e n d of t h e c y c l e . th e d a t a o n pi n s d q 0 - 7 w i l l b e w r i t t e n i n t o t he m e m o r y i f i t i s v a l i d t su(d) b e f o r e t h e e n d o f a w c o n tr o l- l e d write o r t s u ( d ) b e f o r e t h e e nd o f a n e c on t r ol l e d w rite. it i s r e c o m me n d e d th a t g i s k e pt h i g h d u ri n g t h e e n- tire w r i t e c y cle t o a v o id d a t a b u s c o n t e n t i o n on t h e c o m m o n i/o l i n e s . if g i s l e f t l o w , i n t e r n a l c i rcui t r y w i l l turn o f f t h e o u tp u t b u f f e r s t dis (w) a f t e r w g o e s l o w . n o ise c o n si d er a t i o n t h e u6 3 0h 0 4 i s a h i gh s p e e d m e m o r y a n d t h e r e f o r e m u st h a v e a h i g h f r eq u e n c y b y p a ss c ap a ci t o r o f app r o - x i m a t e l y 0.1 m f c on n e c t ed b e t we e n v cc a n d v ss usi n g l e a d s a nd tr a c e s t h a t a r e as s h o rt as p o s s i b l e. a s w i t h a l l h i g h s p e e d c m o s ic s , n o r m a l c a r e f u l l r ou ti n g of p o w e r , g r o u nd a n d s i g n a l s w i l l h e lp p r e v e nt n o ise p r o- b l e m s. ha r d w a re n on v o l a til e s t ore a s t ore c y c l e i s p e r f o r m e d w h e n ne , e a n d w a r e lo w w h i l e g is h i gh. w h i l e a n y s e q u e n c e t o a ch i e v e th i s s t a t e w i l l i n i t i a t e a s t o r e , o n l y w i n i t i a t i o n a n d e i n it i a t i on a r e p r a ct i c a l w i t h o u t ris k i n g a n u n i n t e n t i o n a l sram wr i te t h at wo u l d dist u rb s ram d a t a . dur i n g a s t or e c y c l e, p r e v i o u s n o n v o l a t i l e d a t a i s e r a s e d a nd t h e s ra m c o n t e n t s ar e t h e n p r og r a m me d i n t o n o n v o l a- t i l e e l e m e n ts. once a s t ore c y c l e i s i n i t i a t e d , f u rth e r i n p u t a n d o u t p ut i s d i s ab l e d a n d t h e dq 0 - 7 pi n s a r e t rist a t e d u nt i l t h e c y cle i s c o m pl e t e d. i f e a n d g a r e lo w a n d w a n d n e a r e hig h a t t h e e n d o f t h e c y c l e , a rea d w i l l b e p e r f o r m ed a n d t h e o u t- p u t s w ill g o a cti v e, i n d i c a t i ng t h e e n d o f t h e s t o r e . h a r d w are n on v o la t i le r e c a ll a reca l l c y c l e is p e r f o r m e d w h e n e , g a n d n e a r e l o w w h i l e w i s high . l i k e t h e s t or e c y c l e , r e call i s i n it i a t e d w h e n t h e l ast o f t h e t h r e e c l o c k -sig n a ls g o es t o t h e r eca l l s t a t e . o n c e i n i t i a t e d , t h e reca l l c y cl e w i l l t a k e ?rec a l l c y c l e t i m e t o c o m p l e t e , d u r i n g w h ich a l l i n p u ts a r e i g n o r e d . w h e n t h e reca l l c o m - p l e t e s , a n y r ead o r wr i te s t a t e o n t h e i n p ut p i n s w i l l t a k e e ff e c t . i n t e r n a l l y , r e call is a t w o st e p p r o c e d u r e . fi r st, t h e s ra m d a t a is c l e a r ed a n d s e c on d , t h e n o n v o l at i l e i nf o r m a t i o n i s t r a n sf e rr e d i n t o t h e s ram c e l l s. t h e r e call i n n o way a l t e r s th e d a t a i n t h e n o n v o l a t i l e c e lls. t h e n o n v o l a ti l e d a t a c a n b e r e c a l l e d a n u n l i m i t e d n u m b er of ti m e s. l i k e t h e s t o r e c y cl e , a tr a n s i t i o n m us t o c c u r o n s o m e c o ntr o l p i n s t o c a u se a r e cal l , p r e v e n t i n g i n a d v e r- t e n d m u lt i -tr i g g er i n g . a u t o m a tic p o we r up rec a ll o n p o w e r up , o n c e v cc e x c e e d s t h e s e n se v ol t a g e o f v s w it c h , a reca l l c y c l e i s a u t o m a t i c a l l y i n i t i a t e d . t h e v o lt a g e o n t h e v cc pi n m u s t n o t d r o p b e l o w v s w i t c h o nc e it ha s r i s e n a b o v e i t i n o r d e r f o r t h e reca l l t o o p e r a t e p r o p e r l y . d u e t o t h i s a ut o m a t i c rec a l l , s ra m o p e r a t i o n c an n o t c o m m e n c e u n t i l t restore a f t e r v cc e x c e e ds v swi t ch . i f t h e u 6 3 0 h 0 4 is i n a w rite s t a t e at t h e e n d o f p o w e r u p rec a l l , t h e sr a m d a t a w i ll be c o r r u p t e d . t o h e l p a vo i d t h i s s i t u a t i o n , a 1 0 k w r e sist o r s h o u l d b e c o n n ect e d b e t w e e n w a nd s y st e m v cc . h a r d w a r e p r o t ec t i on the u6 3 0h 0 4 off e r s t w o l e v e l s o f p r o t ecti o n t o s u p - p r e s s in a d v e r t e n t s t ore c y cl e s . i f t h e c o n t r o l si g n a ls (e , g , w an d n e ) r e m a in in the s to r e c o n d it i on a t the e n d o f a s t or e c y c l e , a s e c o n d s t o re c y cl e w i l l n o t b e s t a r t e d . t h e s t ore ( o r reca l l) w il l b e i n i t i a t e d o n l y a f t e r a t r an s i ti o n o n a n y on e o f t h e s e s i g n a ls t o th e r e q ui r ed st a t e. in a d d it i on t o m u lt i -tr i g g er pr o t e c t i o n, the u 6 3 0 h 0 4 off e r s h a rd w a r e p r o t ecti o n t hr o u g h v cc s e n s e . w h e n v cc < v swi t ch the e x t e rn a l l y i n i ti a t e d s t o r e op e r a t i o n w i l l be i n h i b i t e d.
1 3 d e c e m b e r 1 2 , 1 9 97 u630h04 preliminary l o w a v e r a ge a ctive power t h e u 6 3 0 h 0 4 h as b e e n d e sig n e d t o d r a w si g n i f i c a n t l y l e ss p o w e r w h e n e i s l o w ( c h i p e na b l e d ) b u t t he a c c es s c y c l e t i me i s l o n g e r t h a n 5 5 n s . w h en e i s high t h e ch i p c o nsu m e s o n l y st a n d b y c u r- r e n t . t h e o v e r a l l a v e r ag e c u r r e n t d r a w n b y t h e p a r t d e p e nds on t h e f o l l o w i n g i t e m s : 1 . c m o s o r t t l i n p u t l e v e ls 2 . t h e t i me d u r i n g w h i c h t h e c h i p i s d i s ab l e d ( e h i g h) 3 . t h e c y cle ti m e f o r a c c e s s e s ( e lo w ) 4 . t h e r a t i o o f read s t o w ri t e s 5 . t h e o p e r a t i ng t e m p e r at u r e 6 . t h e v cc l e v e l
l i f e s u p p o r t p o l i c y z m d p r o d u c t s a re no t designed, inten d ed , o r auth o r i z ed fo r us e as c omponent s in sy s t e ms intend f or su r gical i m plant into the bod y , o r other appl i cations intend e d to support or sustain l i f e, or f or any other appl i cation in w hi c h the f a i lure o f the z m d product cou l d create a s i tuation whe r e personal inju r y or death m ay oc c u r . co m ponents u s ed in l i f e -suppo r t dev i ces or sy s t e ms must be exp r ess l y autho r ized by z m d f or s u c h purpose. the in f o r m a t i on d e s c r ibes the type o f co m ponent an d s hall not be cons i dered as assu r ed characte r i s tic s . t er m s o f de l ive r y and r i ghts to change design r eser v e d . memory products 1 9 98 hardstore 512 x 8 nvsram u630h04 ze n tr u m m ikr o e l e k t r o n i k d re s den g m b h gren z stra ? e 28 ? d - 0 1 109 d resden ? p. o. b. 80 01 34 ? d - 0 1 101 d re s d e n ? ger m a n y phone: +49 351 8 8 22 - 3 06 ? fa x : +49 3 5 1 88 22 - 3 3 7 ? e m ail: s a l es@ z md . de internet w eb s i t e: http:// w w w . z md. d e

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