- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45220 > MC68HC05F4FB (MOTOROLA INC) 8-BIT, MROM, 1.789 MHz, MICROCONTROLLER, PQFP44 PDF資料下載
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)： | 51/130頁 |
| 文件大?。?/td> | 2089K |
| 代理商： | MC68HC05F4FB |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁當前第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁
MC68HC05F4
MOTOROLA
2-5
MODES OF OPERATION AND PIN DESCRIPTIONS
2
2.4.3
RESET
This active low I/O pin is used to reset the MCU. Applying a logic zero to this pin forces the device
to a known start-up state. An external RC-circuit can be connected to this pin to generate a
power-on reset (POR) if required. In this case, the time constant must be great enough (at least
100ms) to allow the oscillator circuit to stabilise. This input has an internal Schmitt trigger to
improve noise immunity. When a low voltage reset condition occurs internally, the RESET pin
provides an active-low open drain output signal that may be used to reset external hardware.
Other internal reset conditions are not visible at the RESET pin.
2.4.4
PA0–PA7/keyboard interrupt
The eight I/O lines that comprise port A are congured as inputs during reset. Port A shares its
pins with the keyboard interrupt function. Each line has an internal pull-up resistor.
2.4.5
PB0–PB7
The eight I/O lines that comprise port B are congured as inputs during reset. Lines PB0 and PB1
have open drain outputs, lines PB2 and PB3 have internal pull-up resistors and lines PB4–PB7
have internal pull-down resistors.
2.4.6
PC0–PC7
During reset, the eight I/O lines of port C are congured as inputs and each has an internal pull-up
resistor.
Note:
These pins are not available on the 28-pin version.
2.4.7
PD0–PD7
During reset, the eight lines of port D are congured as inputs. As all port D pins are open drain
outputs, an external pull-up resistor is needed when a pin is used as an output.
Note:
These pins are not available on the 28-pin version.
TPG
23
05F4Book Page 5 Tuesday, August 5, 1997 1:10 pm
相關PDF資料 |
PDF描述 |
|---|---|
| MC68HC05F5FN | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC44 |
| MC68HC05F5P | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP40 |
| MC68HC05F5CFN | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC44 |
| MC68HC05F8B | 8-BIT, MROM, 1.8 MHz, MICROCONTROLLER, PDIP56 |
| MC68HC05F8FU | 8-BIT, MROM, 1.8 MHz, MICROCONTROLLER, PQFP64 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05F5 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05F6 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MCU with DTMF/melody generator |
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。