- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45219 > MC68HC05CT4FB (FREESCALE SEMICONDUCTOR INC) 8-BIT, MROM, 2.048 MHz, MICROCONTROLLER, PQFP44 PDF資料下載
參數(shù)資料
| 型號(hào)： | MC68HC05CT4FB |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.048 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | QFP-44 |
| 文件頁(yè)數(shù)： | 84/142頁(yè) |
| 文件大小： | 3470K |
| 代理商： | MC68HC05CT4FB |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)當(dāng)前第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)
NON-DISCLOSURE
AGREEMENT
REQUIRED
Resets
General Release Specification
MC68HC05CT4 — Rev. 2.0
Resets
5.4 Internal Resets
The three internally generated resets are the initial power-on reset
function, the COP watchdog timer reset, and the illegal address detector.
Termination of the external RESET input or the internal COP watchdog
timer are the only reset sources that can alter the operating mode of the
MCU. The other internal resets do not have any effect on the mode of
operation when their reset state ends.
5.4.1 Power-On Reset (POR)
The internal POR is generated on power-up to allow the clock oscillator
to stabilize. The POR is strictly for power turn-on conditions and is not
able to detect a drop in the power supply voltage (brown-out). There is
an oscillator stabilization delay of 4064 internal processor bus clock
cycles (PH2) after the oscillator becomes active.
The POR generates the RST signal that resets the CPU. If any other
reset function is active at the end of this 4064-cycle delay, the RST
signal remains in the reset condition until the other reset condition(s)
end. During the POR, the RESET pin is forced low.
5.4.2 Computer Operating Properly Reset (COPR)
The MCU contains a watchdog timer that automatically times out if not
reset (cleared) within a specific time by a program reset sequence. If the
COP watchdog timer is allowed to time out, an internal reset is
generated to reset the MCU. Regardless of an internal or external
RESET, the MCU comes out of a COP reset according to the standard
rules of mode selection.
The COP reset function is enabled or disabled by a mask option and is
verified during production testing.
5.4.2.1 Resetting the COP
Writing a zero to the COPF bit prevents a COP reset. This action resets
the counter and begins the timeout period again. The COPF bit is bit 0
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC05E16CB | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56 |
| MC68HC05E16FB | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44 |
| MC68HC05E16FU | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP64 |
| MC68HC05E1CDW | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| MC68HC05E1MP | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05CT4FN | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification |
| MC68HC05D9 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-bit microcomputer with PWM outputs and LED drive |
| MC68HC05E0 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit |
| MC68HC05E0FN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| MC68HC05E16 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:16256 bytes of user ROM, 320bytes of EPROM and 352 bytes of RAM |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。