MC68EC000EI20 Freescale Semiconductor, MC68EC000EI20 Datasheet - Page 557
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MC68EC000EI20
Manufacturer Part Number
MC68EC000EI20
Description
IC MPU 32BIT 20MHZ 68-PLCC
Manufacturer
Freescale Semiconductor
Specifications of MC68EC000EI20
Processor Type
M680x0 32-Bit
Speed
20MHz
Voltage
3.3V, 5V
Mounting Type
Surface Mount
Package / Case
68-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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SECTION 8
INSTRUCTION FORMAT SUMMARY
This section contains a listing of the M68000 family instructions in binary format. It is listed
in opcode order for the M68000 family instruction set.
8.1 INSTRUCTION FORMAT
The following paragraphs present a summary of the binary encoding fields.
8.1.1 Coprocessor ID Field
This field specifies which coprocessor in a system is to perform the operation. When using
directly supported floating-point instructions for the MC68040, this field must be set to one.
8.1.2 Effective Address Field
This field specifies which addressing mode is to be used. For some operations, there are
hardware-enforced restrictions on the available addressing modes allowed.
8.1.3 Register/Memory Field
This field is common to all arithmetic instructions. A zero in this field indicates a register-to-
register operation, and a one indicates an < ea > -to-register operation.
8.1.4 Source Specifier Field
This field is common to all artihmetic instructions. The value of the register/memory (R/M)
field affects this field,s definition. If R/M = 0, specifies the source floating-point data register
(FPDR). If R/M = 1, specifies the source operand data format.
MOTOROLA
000 — Long-Word Integer (L)
001 — Single-Precision Real (S)
010 — Extended-Precision Real (X)
011 — Packed-Decimal Real (P)
100 — Word Integer (W)
101 — Double-Precision Real (D)
110 — Byte Integer (B)
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
8-1
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