MC68EC000EI16 Freescale Semiconductor, MC68EC000EI16 Datasheet - Page 39

• Manufacturer Part Number: MC68EC000EI16
• Description: IC MPU 32BIT 16MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC000EI16

• Processor Type: M680x0 32-Bit
• Speed: 16MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

Introduction
Figure 1-21 illustrates the organization of IU data formats in memory. A base address that
selects one byte in memory, the base byte, specifies a bit number that selects one bit, the
bit operand, in the base byte. The MSB of the byte is seven.
The following conditions specify a bit field operand:
The MSB of the base byte is bit field offset 0; the LSB of the base byte is bit field offset 7;
and the LSB of the previous byte in memory is bit field offset – 1. Bit field offsets may have
values between 2 – 31 to 231 – 1, and bit field widths may range from 1 to 32 bits.
A 16-byte block operand, supported by the MOVE16 instruction, has a block of 16 bytes,
aligned to a 16-byte boundary. An address that can point to any byte in the block specifies
this operand.
1-28
1. A base address that selects one byte in memory.
2. A bit field offset that shows the leftmost (base) bit of the bit field in relation to the
3. A bit field width that determines how many bits to the right of the base bit are in
MSB of the base byte.
the bit field.
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
MOTOROLA