參數(shù)資料
型號： MC68HC705X4
廠商： 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述： HCMOS Microcontroller Unit
中文描述： HCMOS微控制器
文件頁數(shù)： 143/156頁
文件大?。?/td> 940K
代理商： MC68HC705X4
Glossary
MC68HC0X4 Rev 1.0
Glossary
port
— A set of wires for communicating with off-chip devices.
prescaler
— A circuit that generates an output signal related to the input signal by a fractional
scale factor such as 1/2, 1/8, 1/10 etc.
program
— A set of computer instructions that cause a computer to perform a desired operation
or operations.
program counter (PC)
— A 16-bit register in the CPU08. The PC register holds the address of
the next instruction or operand that the CPU will use.
pull
— An instruction that copies into the accumulator the contents of a stack RAM location. The
stack RAM address is in the stack pointer.
pullup
— A transistor in the output of a logic gate that connects the output to the logic 1 voltage
of the power supply.
pulse-width
— The amount of time a signal is on as opposed to being in its off state.
pulse-width modulation (PWM)
— Controlled variation (modulation) of the pulse width of a
signal with a constant frequency.
push
— An instruction that copies the contents of the accumulator to the stack RAM. The stack
RAM address is in the stack pointer.
PWM period
— The time required for one complete cycle of a PWM waveform.
RAM
— Random access memory. All RAM locations can be read or written by the CPU. The
contents of a RAM memory location remain valid until the CPU writes a different value or
until power is turned off.
RC circuit
— A circuit consisting of capacitors and resistors having a defined time constant.
read
— To copy the contents of a memory location to the accumulator.
register
— A circuit that stores a group of bits.
reserved memory location
— A memory location that is used only in special factory test modes.
Writing to a reserved location has no effect. Reading a reserved location returns an
unpredictable value.
reset
— To force a device to a known condition.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
相關(guān)PDF資料
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