久久精品国产www456c0m,黄片日韩欧美一级,日本高清不卡一区久久精品

您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄25633 > MD80C52XXX-25SC (TEMIC SEMICONDUCTORS) 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CDIP40 PDF資料下載

型號：	MD80C52XXX-25SC
廠商：	TEMIC SEMICONDUCTORS
元件分類：	微控制器/微處理器
英文描述：	8-BIT, MROM, 25 MHz, MICROCONTROLLER, CDIP40
文件頁數(shù)：	1031/1185頁
文件大?。?/td>	5451K
代理商：	MD80C52XXX-25SC

SAM9G45 [DATASHEET]

6438K–ATARM–12-Feb-13

The Real-time Timer can also be used as a free-running timer with a lower time-base. The best accuracy is

achieved by writing RTPRES to 3. Programming RTPRES to 1 or 2 is possible, but may result in losing status

events because the status register is cleared two Slow Clock cycles after read. Thus if the RTT is configured to trig-

ger an interrupt, the interrupt occurs during 2 Slow Clock cycles after reading RTT_SR. To prevent several

executions of the interrupt handler, the interrupt must be disabled in the interrupt handler and re-enabled when the

status register is clear.

The Real-time Timer value (CRTV) can be read at any time in the register RTT_VR (Real-time Value Register). As

this value can be updated asynchronously from the Master Clock, it is advisable to read this register twice at the

same value to improve accuracy of the returned value.

The current value of the counter is compared with the value written in the alarm register RTT_AR (Real-time Alarm

maximum value, corresponding to 0xFFFF_FFFF, after a reset.

The bit RTTINC in RTT_SR is set each time the Real-time Timer counter is incremented. This bit can be used to

start a periodic interrupt, the period being one second when the RTPRES is programmed with 0x8000 and Slow

Clock equal to 32.768 Hz.

Reading the RTT_SR status register resets the RTTINC and ALMS fields.

Writing the bit RTTRST in RTT_MR immediately reloads and restarts the clock divider with the new programmed

value. This also resets the 32-bit counter.

Because of the asynchronism between the Slow Clock (SCLK) and the System Clock (MCK):

1) The restart of the counter and the reset of the RTT_VR current value register is effective only 2 slow clock cycles

after the write of the RTTRST bit in the RTT_MR register.

2) The status register flags reset is taken into account only 2 slow clock cycles after the read of the RTT_SR (Status

Figure 13-2. RTT Counting

ALMS (RTT_SR)

APB Interface

RTTINC (RTT_SR)

相關(guān)PDF資料	PDF描述
MQ83C154DTXXX-25/883R	8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQFP44
MQ80C52TXXX-12SB	8-BIT, MROM, 12 MHz, MICROCONTROLLER, CQFP44
MC80C52CXXX-16	8-BIT, MROM, 16 MHz, MICROCONTROLLER, CDIP40
MR80C52EXXX-25/883	8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQCC44
MQ83C154XXX-12/883R	8-BIT, MROM, 12 MHz, MICROCONTROLLER, CQFP44

相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
MD80C86	制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor
MD80C862	制造商:Intel 功能描述:PROCESSOR:MICRO-PROCESSOR
MD80C86-2	制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor
MD80C86-2/883	制造商:Intersil Corporation 功能描述:MPU 16BIT CMOS 8MHZ 40CDIP - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:CPU 16BILT 5V CMOS 8MHZ 40CDIP - Bulk
MD80C86-2/B	制造商:Intersil Corporation 功能描述:MPU 16BIT CMOS 8MHZ 40CDIP - Rail/Tube

發(fā)布緊急采購，3分鐘左右您將得到回復。

(若只采購一條型號，填寫一行即可)

*型號	*數(shù)量	廠商	批號	封裝