MC68EC000EI8 Freescale Semiconductor, MC68EC000EI8 Datasheet - Page 392
![IC MPU 32BIT 85MHZ 68-PLCC](/photos/19/6/190617/3833525_sml.gif)
MC68EC000EI8
Manufacturer Part Number
MC68EC000EI8
Description
IC MPU 32BIT 85MHZ 68-PLCC
Manufacturer
Freescale Semiconductor
Series
M68000r
Specifications of MC68EC000EI8
Processor Type
M680x0 32-Bit
Speed
8MHz
Voltage
3.3V, 5V
Mounting Type
Surface Mount
Package / Case
68-PLCC
Core Size
32 Bit
Cpu Speed
8MHz
Digital Ic Case Style
PLCC
No. Of Pins
68
Supply Voltage Range
3V To 3.6V
Operating Temperature Range
0°C To +70°C
Filter Terminals
SMD
Rohs Compliant
Yes
Clock Frequency
8MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
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Floating Point Instructions
FMOVEM
5-90
An example of the calculation of this mask is as follows:
Upon return from a procedure, the restoration of the necessary registers follows the
same convention, and the register mask generated during the save operation on entry
is used to restore the required floating-point data registers:
Nested calling sequence...
Return to caller...
MOVE.W
OR.W
BSR
ADDQ.L
MOVE.B
FMOVEM
RTS
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
*
*
*
Move Multiple Floating-Point
UNSAVED (A7),D7 Load the list of active registers not
saved at entry.
#WILL_USE,D7
PROC_3
#2,A7
(A7) + ,D7
use byte).
(A7) + ,D7
(MC6888X, MC68040)
Data Registers
Combine with those active at this time
Discard the list of registers not saved.
Get the saved register list (pop word,
Restore the registers.
Return to the calling routine.
FMOVEM
MOTOROLA
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