MC68030FE33C Freescale Semiconductor, MC68030FE33C Datasheet - Page 541

• Manufacturer Part Number: MC68030FE33C
• Description: IC MPU 32BIT ENHANCED 132-CQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68030FE33C

• Processor Type: M680x0 32-Bit
• Speed: 33MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 132-CQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

12
12-16
where:
t h e o u t p u t ( s ) o f an a d d r e s s d e c o d e o r c o m p a r a t o r
t h a n D S A C K x s i n c e an a d d i t i o n a l 30 ns is a v a i l a b l e w h e n c o m p a r i n g t A V S L ( O r
t S A S L ) t o t A V D L (or t S A D L ) . T h e o n l y a d d i t i o n a l r e s t r i c t i o n is t h a t S T E R M
v a l u e f o r t S A S L w h e n t h e t o t a l n u m b e r o f c l o c k p e r i o d s (N) e q u a l s t w o in
T a b l e 1.2-2 r e q u i r e s f u r t h e r e x p l a n a t i o n . B e c a u s e t h e c a l c u l a t e d v a l u e o f t h i s
s u c h q u a l i f i c a t i o n is n o t a r e q u i r e m e n t f o r t h e M C 6 8 0 3 0 . S T E R M can be
g e n e r a t e d b y t h e a s s e r t i o n o f ECS, t h e f a i l i n g e d g e o f SO, o r m o s t s i m p l y b y
H o w e v e r , m a n y local m e m o r y s y s t e m s d o n o t o p e r a t e in a t r u l y a s y n c h r o n o u s
c h r o n o u s s e t u p t i m e s f o r t h e D S A C K x s i g n a l s can be g u a r a n t e e d . T h e t i m i n g
S y n c h r o n o u s c y c l e s use t h e S T E R M s i g n a l t o t e r m i n a t e t h e c u r r e n t b u s cycle.
# 6 1 , r e s p e c t i v e l y , f o r all r i s i n g e d g e s o f t h e c l o c k d u r i n g a b u s cycle. T h e
access t i m e (see E q u a t i o n 12-4 o f T a b l e 1 2 - 2 ) i s z e r o u n d e r c e r t a i n c o n d i t i o n s ,
h a r d w a r e c a n n o t a l w a y s q u a l i f y S T E R M w i t h A S at all f r e q u e n c i e s . H o w e v e r ,
(12-4) tSASL- (N-1)°tl - t 3 - t 9 - t 6 0
(12-5) tAVBHL = N°tl -t2 -t6 -t27A
(12-6) tSABHL = (N-1).tl - t9 -t27A
(12-7) tAVDV = N.tl - t 2 - t 6 - t27
(12-8) tSADV-(N-1)°t1
m a n n e r
M C 6 8 0 3 0 ' s c l o c k o r w o r s t case p r o p a g a t i o n d e l a y s are k n o w n ; t h u s , a s y n -
r e q u i r e m e n t s f o r t h i s p s e u d o - s y n c h r o n o u s
b y t h e e q u a t i o n f o r t A V D L .
In b u s c y c l e s o f e q u a l l e n g t h , S T E R M has m o r e r e l a x e d t i m i n g r e q u i r e m e n t s
m u s t m e e t t h e s e t u p a n d h o l d t i m e s as d e f i n e d b y s p e c i f i c a t i o n s # 6 0 a n d
(12-1 ) tAVDL - (N-1).tl - t2 - t6 t47A
(12-2) tSADL = (N-2)otl - t 9 - t 4 7 A
(12-3) tAVSL - (N-1)°tl - t6 - t60
tX
tl
t2
t3
t6
t9
t27
t27A
t47A
t60
N
= Refers to AC Electrical Specification #X
= The Clock Period
= The Clock Low Time
= The Clock High Time
= The Clock High to Address Valid Time
= The Clock Low to AS Low Delay
= The Data-In to Clock Low Setup Time
= The BERR/HALT to Clock Low Setup Time
= The Asynchronous Input Setup Time
= The Synchronous input to CLK High Setup Time
= The Total Number of Clock Periods in the Bus Cycle (Nonburst)
(N~>2 for Synchronous Cycles; N~>3 for Asynchronous Cycles)
b e c a u s e t h e m e m o r y
T a b l e 1 2 - 2 . M e m o r y
t9 t27
MC68030 USER'S MANUAL
A c c e s s T i m e
c o n t r o l l o g i c can e i t h e r be r e l a t e d t o t h e
21 ns
40 ns
20 ns
46 ns
26 ns
N = 2
1 ns
- -
- -
D S A C K x g e n e r a t i o n is g o v e r n e d
E q u a t i o n s a t 2 0 M H z
46 ns
26 ns
71 ns
51 ns
90 ns
70 ns
N = 3
96 ns
76 ns
121 ns
101 ns
140 ns
120 ns
146 ns
126 ns
l o g i c . N o t e t h a t o t h e r
96 ns
76 ns
N = 4
146 ns
126 ns
171 ns
151 ns
190 ns
170 ns
196 ns
176 ns
N = 5
MOTOROLA
221 ns
201 ns
240 ns
220 ns
246 ns
226 ns
196 ns
176 ns
N = 6