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參數(shù)資料
| 型號： | MC68HC05F4FB |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 1.789 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | QFP-44 |
| 文件頁數(shù)： | 26/130頁 |
| 文件大?。?/td> | 2089K |
| 代理商： | MC68HC05F4FB |
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MC68HC05F4
MOTOROLA
iii
GLOSSARY
Pull-down, pull-up These terms refer to resistors, sometimes internal to the device, which are
permanently connected to either ground or VDD.
PWM
Pulse width modulation. This term is used to describe a technique where the
width of the high and low periods of a waveform is varied, usually to enable
a representation of an analog value.
QFP
Quad at pack package.
RAM
Random access memory. Fast read and write, but contents are lost when
the power is removed.
RFI
Radio frequency interference.
RTI
Real-time interrupt.
ROM
Read-only memory. This type of memory is programmed during device
manufacture and cannot subsequently be altered.
RS-232C
A standard serial communications protocol.
SAR
Successive approximation register.
SCI
Serial communications interface.
Set
‘1’ — the logic one state; the opposite of ‘clear’.
Silicon glen
An area in the central belt of Scotland, so called because of the
concentration of semiconductor manufacturers and users found there.
Single chip mode
In this mode the device functions as a self contained unit, requiring only I/O
devices to complete a system.
SPI
Serial peripheral interface.
Test mode
This mode is intended for factory testing.
TTL
Transistor-transistor logic.
UART
Universal asynchronous receiver transmitter.
VCO
Voltage controlled oscillator.
Watchdog
see ‘COP’.
Wired-OR
A means of connecting outputs together such that the resulting composite
output state is the logical OR of the state of the individual outputs.
Word
Two bytes; 16 bits.
XIRQ
Non-maskable interrupt request. The overline indicates that this has an
active-low signal format.
TPG
119
05F4Book Page iii Tuesday, August 5, 1997 1:10 pm
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相關代理商/技術參數(shù) |
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| MC68HC05F5 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
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| MC68HC05F6P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| MC68HC05F8 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor(HCMOS) microcontroller unit |
| MC68HC05J1 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
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