MC68EC040FE20A Freescale Semiconductor, MC68EC040FE20A Datasheet - Page 69
MC68EC040FE20A
Manufacturer Part Number
MC68EC040FE20A
Description
IC MPU 32BIT 20MHZ 184-CQFP
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68EC040FE33A.pdf
(442 pages)
Specifications of MC68EC040FE20A
Processor Type
M680x0 32-Bit
Speed
20MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
184-CQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Available stocks
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Manufacturer
Quantity
Price
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Part Number:
MC68EC040FE20A
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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interpretation allows the operating system to store system-defined information in the
remaining bits. Information typically stored includes the reason for the invalid encoding
(tables paged out, region unallocated, etc.) and possibly the disk address for nonresident
tables. Figure 3-16 illustrates an address translation table in which only a single page
table (table $15) is resident; all other page tables are not resident.
3-20
ADDRESS OFFSET =
TABLE ENTRY # =
$76543210 =
Figure 3-16. Translation Table with Nonresident Tables
SRP
0 1 1 1 0 1 1 0 0 1 0 1 0 1 0 0 0 0 1 X X X X X X X X X X X X X
ROOT INDEX
Freescale Semiconductor, Inc.
$EC
$3B
For More Information On This Product,
$3B
UDT = RESIDENT
NONRESIDENT
UNALLOCATED)
NONRESIDENT
UNALLOCATED)
UDT = INVALID
SUPERVISOR
UDT = INVALID
UDT = INVALID
UDT = INVALID
M68040 USER'S MANUAL
ROOT-LEVEL
(PAGED OR
(PAGED OR
TABLE $00
Go to: www.freescale.com
TABLES
POINTER INDEX
$15
$54
LOGICAL ADDRESS
PAGE INDEX
$15
$01
$04
UDT = RESIDENT
UNALLOCATED)
UNALLOCATED)
POINTER-LEVEL
NONRESIDENT
UDT = INVALID
UDT = INVALID
UDT = INVALID
NONRESIDENT
UDT = INVALID
(PAGED OR
(PAGED OR
TABLE $7F
TABLE $3B
TABLE $00
TABLES
PAGE OFFSET
$01
FRAME ADDRESS
UNALLOCATED)
UNALLOCATED)
NONRESIDENT
NONRESIDENT
PAGE-LEVEL
(PAGED OR
(PAGED OR
TABLE $00
TABLE $1F
TABLE $15
TABLES
MOTOROLA
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