MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 354

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Glossary
CPU cycles — A CPU clock cycle is one period of the internal bus-rate clock, f
CPU registers — Memory locations that are wired directly into the CPU logic instead of being
CSIC — customer-specified integrated circuit
cycle time — The period of the operating frequency: t
decimal number system — Base 10 numbering system that uses the digits zero through nine.
direct memory access module (DMA) — A M68HC08 Family module that can perform data
DMA — See "direct memory access module (DMA)."
DMA service request — A signal from a peripheral to the DMA module that enables the DMA
duty cycle — A ratio of the amount of time the signal is on versus the time it is off. Duty cycle is
EEPROM — Electrically erasable, programmable, read-only memory. A nonvolatile type of
MC68HC708XL36
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derived by dividing a crystal oscillator source by two or more so the high and low times
will be equal. The length of time required to execute an instruction is measured in CPU
clock cycles.
part of the addressable memory map. The CPU always has direct access to the
information in these registers. The CPU registers in an M68HC08 are:
transfers between any two CPU-addressable locations without CPU intervention. For
transmitting or receiving blocks of data to or from peripherals, DMA transfers are faster
and more code-efficient than CPU interrupts.
module to transfer data.
usually represented by a percentage.
memory that can be electrically reprogrammed.
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A (8-bit accumulator)
H:X (16-bit index register)
SP (16-bit stack pointer)
PC (16-bit program counter)
CCR (condition code register containing the V, H, I, N, Z, and C bits)
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Glossary
CYC
= 1/f
OP
.
OP
, normally
MOTOROLA