MC68030FE25C Freescale Semiconductor, MC68030FE25C Datasheet - Page 328
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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L
9.5.1.10 LONG-FORMAT INVALID DESCRIPTOR. The long-format invalid descrip-
31
9.5.1.11 SHORT-FORMAT INDIRECT DESCRIPTOR. The short-format indirect de-
MOTOROLA
tor is used in pointer and page tables that contain long-format descriptors.
ceding section. The first long word contains the DT field in the lowest order
system. Figure 9-16 shows the format of the long-format invalid descriptor.
scriptor does not have a unique descriptor-type code. Rather, it resides in a
short-format descriptors and is neither a page descriptor nor an invalid de-
scriptor. The descriptor-type field contains either the code for a valid 4-byte
descriptor or for a valid 8-byte descriptor, depending upon the size of the
FIELD DEFINITIONS apply to the corresponding fields of this descriptor. Fig-
It is used in the same way as the short-format invalid descriptor in the pre-
bits. The second long word is an unused field, also available to the operating
page table (the bottom level of the address translation tree) that contains
referenced page descriptor. The field descriptions in 9.5.1.1 DESCRIPTOR
ure 9-17 shows the format of a short-format indirect descriptor.
0NusE0
Figure 9-17. Short-Format Indirect Descriptor
I
Figure 9-16. Long-Format Invalid Descriptor
31
MC68030 USER'S MANUAL
2 ; 0 3;
DESCRIPTOR ADDRESS
0N0s,0
21 0
9-27
0
J
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