MC68030FE25C Freescale Semiconductor, MC68030FE25C Datasheet - Page 381
![no-image](/images/manufacturer_photos/0/2/262/freescale_semiconductor_sml.jpg)
MC68030FE25C
Manufacturer Part Number
MC68030FE25C
Description
IC MPU 32BIT ENHANCED 132-CQFP
Manufacturer
Freescale Semiconductor
Specifications of MC68030FE25C
Processor Type
M680x0 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
132-CQFP
Family Name
M68000
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
25MHz
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
Surface Mount
Pin Count
132
Package Type
CQUAD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68030FE25C
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC68030FE25C
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
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9
9-80
/* Block not found so find upper level entry unallocated and call SearchPageTable that will 'expand' */
/* Scan table pointed to by upper level index to see if it can hold the block. If not, see if it can be
/* be expanded. If successful then set flags in the page entries, set status to "OK" and User's
/* virtual address
Status = "Out of virtual Memory";
/* Scan User eligible page tables
for Upper_Table_Index = 1 to 31 do
/* the null table to hold the block.
for Upper_Table_Index = 1 to 31
/* No more virtual space, exit leaving Status = "out of virtual memory"
Declare NumPages;
if SizelnBytes > 16 megabytes then exit Vallocate;
NumPages = (SizelnBytes+PageSize-1)/PageSize;
exit Vallocate;
Declare Upper_Table Index, Lower Level_Index;
Procedure SearchPageTable;
Declare Maxfound;
Maxfound = 0;
For Lower_Level_Index = 0 to UppeLTable[].Lim]LField
If Upper_Table[].Status = allocated then call SearchPageTable;
If Status = "OK" then Exit Vallocate;
end;
]f Upper_Table[].Status = unallocated then call
/* count consecutive free pages until Maxfound met or not
If Lower_Table[].Status = invalid_unallocated then do
if Maxfound >= NumPages then do
Maxfound = Maxfound+l;
MC68030 USER'S M A N U A L
SearchPageTable;
/* number of pages required to hold request
/* default result status to this error
/* Pages needed
/*table indexes
/* Count of consecutive free blocks found
M O T O R O L A
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
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