MC68020EH25E Freescale Semiconductor, MC68020EH25E Datasheet - Page 4
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MC68020EH25E
Manufacturer Part Number
MC68020EH25E
Description
IC MPU 32BIT 33MHZ 132-PQFP
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68020EH16E.pdf
(306 pages)
Specifications of MC68020EH25E
Processor Type
M680x0 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
132-MQFP, 132-PQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68020EH25E
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Paragraph
3.12
3.13
4.1
4.2
4.3
4.3.1
4.3.2
5.1
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.1.7
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.3
5.3.1
5.3.2
5.3.3
5.4
5.4.1
5.4.1.1
5.4.1.2
5.4.1.3
5.4.2
5.4.3
5.5
5.5.1
viii
Number
Power Supply Connections ..................................................................... 3-7
Signal Summary...................................................................................... 3-8
On-Chip Cache Organization and Operation .......................................... 4-1
Cache Reset ........................................................................................... 4-3
Cache Control ......................................................................................... 4-3
Bus Transfer Signals............................................................................... 5-1
Data Transfer Mechanism....................................................................... 5-5
Data Transfer Cycles .............................................................................. 5-25
CPU Space Cycles ................................................................................. 5-44
Bus Exception Control Cycles................................................................. 5-53
Cache Control Register (CACR) ......................................................... 4-3
Cache Address Register (CAAR) ........................................................ 4-4
Bus Control Signals ............................................................................. 5-2
Address Bus ........................................................................................ 5-3
Data Strobe ......................................................................................... 5-4
Data Buffer Enable .............................................................................. 5-4
Bus Cycle Termination Signals............................................................ 5-4
Dynamic Bus Sizing ............................................................................ 5-5
Misaligned Operands........................................................................... 5-14
Effects of Dynamic Bus Sizing and Operand Misalignment ................ 5-20
Address, Size, and Data Bus Relationships ........................................ 5-21
Cache Interactions .............................................................................. 5-22
Synchronous Operation with DSACK1/DSACK0 ............................... 5-24
Read Cycle .......................................................................................... 5-26
Write Cycle .......................................................................................... 5-33
Read-Modify-Write Cycle..................................................................... 5-39
Interrupt Acknowledge Bus Cycles ...................................................... 5-45
Breakpoint Acknowledge Cycle ........................................................... 5-50
Coprocessor Communication Cycles .................................................. 5-53
Address Strobe .................................................................................... 5-3
Data Bus.............................................................................................. 5-3
Bus Operation ..................................................................................... 5-24
Bus Errors ........................................................................................... 5-55
TABLE OF CONTENTS (Continued)
Interrupt Acknowledge Cycle—Terminated Normally ...................... 5-45
Autovector Interrupt Acknowledge Cycle ......................................... 5-48
Spurious Interrupt Cycle .................................................................. 5-48
Freescale Semiconductor, Inc.
For More Information On This Product,
SECTION 1: OVERVIEW
On-Chip Cache Memory
M68020 USER’S MANUAL
Go to: www.freescale.com
Bus Operation
Section 4
Section 5
Title
UM Rev.1.0
MOTOROLA
Number
Page
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