- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45219 > MC68HC05CL48 (FREESCALE SEMICONDUCTOR INC) 8-BIT, MROM, 1.802 MHz, MICROCONTROLLER, PQFP112 PDF資料下載
參數(shù)資料
| 型號： | MC68HC05CL48 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 1.802 MHz, MICROCONTROLLER, PQFP112 |
| 封裝： | TQFP-112 |
| 文件頁數(shù)： | 111/145頁 |
| 文件大?。?/td> | 673K |
| 代理商： | MC68HC05CL48 |
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頁當前第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頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁
GENERAL RELEASE SPECIFICATION
June 11, 1997
MOTOROLA
TIMER
MC68HC05CL48
8-16
REV 2.0
8.2.1 Computer Operating Properly (COP) Watchdog reset
The COP watchdog timer function is implemented on this device by using the
output of the RTI circuit and further dividing it by eight. The minimum COP reset
rates are listed in Table 8-1. If the COP circuit times out, an internal reset is
generated and the normal reset vector is fetched.
Preventing a COP time-out is done by writing a “0” to bit 0 of address $FFF0. This
location is shared with User ROM byte. And reading this location will return the
User ROM data. When the COP is cleared, only the nal divide by eight stage
(output of the RTI) is cleared. If the COP (Computer Operating Properly)
Watchdog Timer circuit times out, an internal reset is generated and the reset
vector is fetched.
This function is software selectable by setting the COP bit in the Option Register.
The COP bit is set after reset, i.e. the COP function is defaulted. The COP
function can be disable by writing a ‘0’ to this bit.
NOTE
COP is located at bit 6 of the Option Register at $001F, which can
only be written once after reset.
8.2.2 Ctimer Control and Status Register (CTCSR)
The CTCSR contains the timer interrupt ag, the timer interrupt enable bits, and
the real time interrupt rate select bits.
CTOF - Core Timer Over Flow
This is a clearable, read-only status bit and is set when the 8-bit ripple counter
rolls over from $FF to $00.
1 =
No effect
0 =
Clearing the TOF
RTIF - Real Time Interrupt Flag
The Real Time Interrupt circuit consists of a three stage divider and a 1 of 4
selector. The clock frequency that drives the RTI circuit is E/213 with three
additional divider stages. This ag is a clearable, read-only status bit and is set
76543210
CTCSR
$0008
READ
CTOF
RTIF
CTOFE
RTIE
00
RT1
RT0
WRITE
RESET
00000011
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC705CL48 | 8-BIT, OTPROM, 1.802 MHz, MICROCONTROLLER, PQFP112 |
| MC68HC05CT4FN | 8-BIT, MROM, 2.048 MHz, MICROCONTROLLER, PQCC44 |
| MC68HC05CT4FB | 8-BIT, MROM, 2.048 MHz, MICROCONTROLLER, PQFP44 |
| MC68HC05E16CB | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56 |
| MC68HC05E16FB | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05CT4FB | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification |
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。