MC68020CRC16E Freescale Semiconductor, MC68020CRC16E Datasheet - Page 80
MC68020CRC16E
Manufacturer Part Number
MC68020CRC16E
Description
IC MICROPROCESSOR 32BIT 114-PGA
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68020EH16E.pdf
(306 pages)
Specifications of MC68020CRC16E
Processor Type
M680x0 32-Bit
Speed
166MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
114-PGA
Family Name
M68000
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
16.67MHz
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
Through Hole
Pin Count
114
Package Type
PGA
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:
MC68020CRC16E
Manufacturer:
MOT
Quantity:
10
- Current page: 80 of 306
- Download datasheet (3Mb)
5.3.2 Write Cycle
During a write cycle, the processor transfers data to memory or a peripheral device.
Figure 5-24 is a flowchart of a write cycle operation for a long-word transfer. Figures 5-25–
5-28 are write cycle timing diagrams in terms of clock periods. Figure 5-25 shows two
write cycles (between two read cycles with no idle time in between) for a 32-bit port.
Figure 5-26 shows byte and word write cycles to a 32-bit port. Figure 5-27 shows a long-
word write cycle to an 8-bit port. Figure 5-28 shows a long-word write cycle to a 16-bit
port.
MOTOROLA
**
**
*
*
*
*
This step does not apply to the MC68EC020.
For the MC68EC020, A23–A0.
1) ASSERT ECS/OCS FOR ONE-HALF CLOCK
2) DRIVE ADDRESS ON A31–A0
3) DRIVE FUNCTION CODES ON FC2–FC0
4) DRIVE SIZ1, SIZ0 (FOUR BYTES)
5) SET R/W TO WRITE
6) ASSERT AS
7) ASSERT DBEN
8) DRIVE DATA LINES D31–D0
9) ASSERT DS
1) NEGATE AS AND DS
2) REMOVE DATA FROM D31–D0
3) NEGATE DBEN
TERMINATE OUTPUT TRANSFER
START NEXT CYCLE
ADDRESS DEVICE
PROCESSOR
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 5-24. Write Cycle Flowchart
Go to: www.freescale.com
M68020 USER’S MANUAL
1) DECODE ADDRESS
2) STORE DATA FROM D31–D0
3) ASSERT DSACK1/DSACK0
1) NEGATE DSACK1/DSACK0
EXTERNAL DEVICE
TERMINATE CYCLE
ACCEPT DATA
5- 33
Related parts for MC68020CRC16E
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
(MC600 Series) INTEGRATED CIRCUITS
Manufacturer:
ETC
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet: