MC68030RC20C Freescale Semiconductor, MC68030RC20C Datasheet - Page 541
MC68030RC20C
Manufacturer Part Number
MC68030RC20C
Description
IC MPU 32BIT ENHANCED 128-PGA
Manufacturer
Freescale Semiconductor
Specifications of MC68030RC20C
Processor Type
M680x0 32-Bit
Speed
20MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
128-PGA
Family Name
M68000
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
20MHz
Instruction Set Architecture
RISC
Supply Voltage 1 (typ)
5V
Operating Supply Voltage (max)
5.25V
Operating Supply Voltage (min)
4.75V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Through Hole
Pin Count
128
Package Type
PGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68030RC20C-1F91C
Manufacturer:
ON/安森美
Quantity:
20 000
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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
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