MC68EC040FE20A Freescale Semiconductor, MC68EC040FE20A Datasheet - Page 6

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MC68EC040FE20A

Manufacturer Part Number
MC68EC040FE20A
Description
IC MPU 32BIT 20MHZ 184-CQFP
Manufacturer
Freescale Semiconductor
Datasheet

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

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68EC040FE20A
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Paragraph
4.1
4.2
4.3
4.3.1
4.3.1.1
4.3.1.2
4.3.2
4.3.3
4.4
4.4.1
4.4.2
4.4.3
4.4.4
4.5
4.6
4.6.1
4.6.2
4.7
4.7.1
4.7.2
5.1
5.2
5.3
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
5.3.8
5.3.9
5.4
5.4.1
viii
Number
Cache Operation ................................................................................... 4-2
Cache Management.............................................................................. 4-5
Caching Modes ..................................................................................... 4-6
Cache Protocol ..................................................................................... 4-7
Cache Coherency ................................................................................. 4-9
Memory Accesses for Cache Maintenance........................................... 4-11
Cache Operation Summary................................................................... 4-13
Address Bus (A31–A0) ......................................................................... 5-4
Data Bus (D31–D0) ............................................................................... 5-5
Transfer Attribute Signals...................................................................... 5-5
Bus Transfer Control Signals ................................................................ 5-8
Cachable Accesses ........................................................................... 4-6
Cache-Inhibited Accesses ................................................................. 4-7
Special Accesses .............................................................................. 4-7
Read Miss ......................................................................................... 4-8
Write Miss .......................................................................................... 4-8
Read Hit ............................................................................................ 4-8
Write Hit ............................................................................................. 4-8
Cache Filling...................................................................................... 4-11
Cache Pushes ................................................................................... 4-13
Instruction Cache............................................................................... 4-14
Data Cache........................................................................................ 4-15
Transfer Type (TT1, TT0) .................................................................. 5-5
Transfer Modifier (TM2–TM0) ........................................................... 5-6
Transfer Line Number (TLN1, TLN0)................................................. 5-6
User-Programmable Attributes (UPA1, UPA0) .................................. 5-7
Read/Write (R/W) .............................................................................. 5-7
Transfer Size (SIZ1, SIZ0) ................................................................ 5-7
Lock (LOCK) ...................................................................................... 5-7
Lock End (LOCKE) ............................................................................ 5-7
Cache Inhibit Out (CIOUT) ................................................................ 5-8
Transfer Start (TS) ............................................................................. 5-8
TABLE OF CONTENTS (Continued)
Write-Through Mode ...................................................................... 4-6
Copyback Mode ............................................................................. 4-6
Freescale Semiconductor, Inc.
For More Information On This Product,
Instruction and Data Caches
M68040 USER’S MANUAL
Go to: www.freescale.com
Signal Description
Section 4
Section 5
Title
MOTOROLA
Number
Page

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