MC68030RC20C Freescale Semiconductor, MC68030RC20C Datasheet - Page 426
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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MOTOROLA
t i a t i n g t h e i n s t r u c t i o n . T h e IA bit of this null p r i m i t i v e u s u a l l y s h o u l d be set
t o m i n i m i z e i n t e r r u p t l a t e n c y w h i l e t h e m a i n p r o c e s s o r is w a i t i n g f o r t h e
A c o p r o c e s s o r can be d e s i g n e d to e x e c u t e a cpGEN i n s t r u c t i o n c o n c u r r e n t l y
w i t h t h e e x e c u t i o n o f m a i n p r o c e s s o r i n s t r u c t i o n s and, also, b u f f e r o n e w r i t e
c o p r o c e s s o r i n s t r u c t i o n . T h i s p r i m i t i v e i n d i c a t e s t h a t t h e c o p r o c e s s o r is b u s y
c o p r o c e s s o r to c o m p l e t e t h e g e n e r a l c a t e g o r y i n s t r u c t i o n .
T a b l e 10-3 s u m m a r i z e s t h e e n c o d i n g s of t h e null p r i m i t i v e .
o p e r a t i o n to e i t h e r its c o m m a n d or c o n d i t i o n CIR. T h i s t y p e of c o p r o c e s s o r
issues a null p r i m i t i v e w i t h CA = 1 w h e n it is c o n c u r r e n t l y e x e c u t i n g a cpGEN
i n s t r u c t i o n , and t h e m a i n p r o c e s s o r i n i t i a t e s a n o t h e r g e n e r a l o r c o n d i t i o n a l
and t h e m a i n p r o c e s s o r s h o u l d read t h e r e s p o n s e CIR a g a i n w i t h o u t reini-
x= Don't Care
c= 1 or 0 Depending on Coprocessor Condition Evaluation
CA
x
0
0
0
1
1
PC
0
0
0
0
1
0
T a b l e 10-3. Null C o p r o c e s s o r R e s p o n s e P r i m i t i v e E n c o d i n g s
IA
x
0
0
x
1
1
PF
x
x
0
0
1
x
TF
x
x
c
c
c
x
MC68030 USER'S MANUAL
tion Address CIR, Clear PC Bit, and
Proceed with Operation Specified
by CA, IA, PF, and TF Bits
Service Pending Interrupts
Service Pending Interrupts and Same as General Category
If (Trace Pending) Reread Re- Main Processor Completes In-
sponse CIR; Else, Execute Next In- struction Execution Based on TF = c
struction
CIR; Else, Execute Next Instruction
Coprocessor Instruction Corn- Main Processor Completes In-
tions or Execute Next lnstruction TF=c.
Pass Program Counter to Instruc- Same as General Category
Reread Response CIR, Do Not Same as GeneraI Category
Reread the Response CIR
If(Trace Pending) Service Pending Main Processor Completes In-
Interrupts and Reread Response struction Execution Based on TF= c
31eted; Service Pending Excep- struction Execution Based on
General Instructions
Conditional Instructions
10-39
1(
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