MC68EN360AI25VL Freescale, MC68EN360AI25VL Datasheet - Page 224
MC68EN360AI25VL
Manufacturer Part Number
MC68EN360AI25VL
Description
Manufacturer
Freescale
Datasheet
1.MC68EN360AI25VL.pdf
(962 pages)
Specifications of MC68EN360AI25VL
Family Name
M68000
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
25MHz
Instruction Set Architecture
RISC
Operating Supply Voltage (max)
3.3V
Operating Supply Voltage (min)
2.7V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
240
Package Type
FQFP
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68EN360AI25VL
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC68EN360AI25VL
Manufacturer:
FREESCALE
Quantity:
20 000
- Current page: 224 of 962
- Download datasheet (4Mb)
CPU32+
IPIPE1–IPIPE0 should be sampled on the falling edge of the clock. Loading IRC always indi-
cates that an instruction is beginning execution — the opcode is loaded into IRC by the
transfer. In BDM mode, the data output DSO is connected to IPIPE0. The IPIPE1 pin is
unused in BDM mode.
5.6.3.3 OPCODE TRACKING DURING LOOP MODE. IPIPE and IFETCH continue to work
normally during loop mode. IFETCH indicates all instruction fetches up through the point that
data begins recirculating within the instruction pipeline. IPIPE continues to signal the start
of instructions and the use of extension words even though data is being recirculated inter-
nally. IFETCH returns to normal operation with the first fetch after exiting loop mode.
5.7 INSTRUCTION EXECUTION TIMING
This section describes the instruction execution timing of the CPU32+. External clock cycles
are used to provide accurate execution and operation timing guidelines, but not exact timing
for every possible circumstance. This approach is used because exact execution time for an
instruction or operation depends on concurrence of independently scheduled resources, on
memory speeds, and on other variables.
An assembly language programmer or compiler writer can use the information in this section
to predict the performance of the CPU32+. Additionally, timing for exception processing is
included so that designers of multitasking or real-time systems can predict task-switch over-
head, maximum interrupt latency, and similar timing parameters. Instruction timing is given
in clock cycles to eliminate clock frequency dependency.
Most instruction timing information in the following subsections is taken from the CPU32
documentation. It applies to the CPU32+ when it is executing in 16-bit mode. However, a
summary of experiments run on the CPU32+ and the CPU32 is given in Table 5-25. The
tests show general indications of performance improvement of the CPU32+ over the
CPU32. Actual results on real applications may vary.
Note that the CPU32+ gains a significant performance advantage (58%) over the original
CPU32 when using long operands on a slow external bus. (Most compilers generate code
using long operands where possible.) Thus, the CPU32+ performance in 32-bit mode "falls
off" less rapidly than does the original CPU32.
5-82
16-Bit Data Bus
32-Bit Data Bus with 16-Bit Operands Only
32-Bit Data Bus with 32-Bit Operands Only
NOTE:
PI = % Performance Increase over a CPU32 in the same conditions
BU = % Bus Utilization taken by the processor in the experiment
(e.g., MOVE.W, CLR.W, etc.)
(e.g., MOVE.L, MOVEA.L, MOVEM.L etc.)
Table 5-25. CPU32+ Performance Improvement over the CPU32
Conditions
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68360 USER’S MANUAL
Go to: www.freescale.com
13/50
6/52
0/78
2
Bus Cycle Length
PI/BU (see Note)
13/65
40/62
0/89
3
24/76
58/73
0/95
5
Related parts for MC68EN360AI25VL
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
TOWER ELEVATOR BOARDS HARDWARE
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
TOWER SERIAL I/O HARDWARE
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
LCD MODULE FOR TWR SYSTEM
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
DAUGHTER LCD WVGA I.MX51
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
TOWER SYSTEM BOARD MPC5125
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
KIT EVALUATION I.MX51
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
KIT DEVELOPMENT WINCE IMX25
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
TOWER SYSTEM KIT MPC5125
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
TOWER SYSTEM BOARD K40X256
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
TOWER SYSTEM KIT K40X256
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
Microcontrollers (MCU) MX28 PLATFORM DEV KIT
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
MCU, MPU & DSP Development Tools IAR KickStart Kit for Kinetis K60
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
24BIT HDMI MX535/08
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet: