XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 569

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

mask — 1. A logic circuit that forces a bit or group of bits to a desired state. 2. A photomask used
mask option — A optional microcontroller feature that the customer chooses to enable or
mask option register (MOR) — An EPROM location containing bits that enable or disable
MCU — Microcontroller unit. See “microcontroller.”
memory location — Each M68HC08 memory location holds one byte of data and has a unique
memory map — A pictorial representation of all memory locations in a computer system.
microcontroller — Microcontroller unit (MCU). A complete computer system, including a CPU,
modulo counter — A counter that can be programmed to count to any number from zero to its
monitor ROM — A section of ROM that can execute commands from a host computer for testing
MOR — See "mask option register (MOR)."
most significant bit (MSB) — The leftmost digit of a binary number.
multiplexer — A device that can select one of a number of inputs and pass the logic level of that
N — The negative bit in the condition code register of the CPU08. The CPU sets the negative bit
nibble — A set of four bits (half of a byte).
object code — The output from an assembler or compiler that is itself executable machine code,
opcode — A binary code that instructs the CPU to perform an operation.
MC68HC908AZ60A — Rev 2.0
MOTOROLA
in integrated circuit fabrication to transfer an image onto silicon.
disable.
certain MCU features.
address. To store information in a memory location, the CPU places the address of the
location on the address bus, the data information on the data bus, and asserts the write
signal. To read information from a memory location, the CPU places the address of the
location on the address bus and asserts the read signal. In response to the read signal,
the selected memory location places its data onto the data bus.
memory, a clock oscillator, and input/output (I/O) on a single integrated circuit.
maximum possible modulus.
purposes.
input on to the output.
when an arithmetic operation, logical operation, or data manipulation produces a negative
result.
or is suitable for processing to produce executable machine code.
Glossary
Technical Data
Glossary
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