參數(shù)資料
型號(hào)： IQ80C52XXX-16SHXXX:RD
廠商： TEMIC SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQFP44
文件頁(yè)數(shù)： 8/60頁(yè)
文件大小： 5137K
16
8266D-MCU Wireless-06/12
ATmega128RFA1
interrupts. All enabled interrupts can then interrupt the current interrupt routine. The I-bit
is automatically set when a Return from Interrupt instruction – RETI – is executed.
There are basically two types of interrupts. The first type is triggered by an event that
sets the Interrupt Flag. For these interrupts, the Program Counter is vectored to the
actual Interrupt Vector in order to execute the interrupt handling routine, and hardware
clears the corresponding Interrupt Flag. Interrupt Flags can also be cleared by writing a
logic one to the flag bit position(s) to be cleared. If an interrupt condition occurs while
the corresponding interrupt enable bit is cleared, the Interrupt Flag will be set and
remembered until the interrupt is enabled, or the flag is cleared by software. Similarly, if
one or more interrupt conditions occur while the Global Interrupt Enable bit is cleared,
the corresponding Interrupt Flag(s) will be set and remembered until the Global
Interrupt Enable bit is set, and will then be executed by order of priority.
The second type of interrupts will trigger as long as the interrupt condition is present.
These interrupts do not necessarily have Interrupt Flags. If the interrupt condition
disappears before the interrupt is enabled, the interrupt will not be triggered.
When the AVR exits from an interrupt, it will always return to the main program and
execute one more instruction before any pending interrupt is served.
Note that the Status Register is not automatically stored when entering an interrupt
routine, nor restored when returning from an interrupt routine. This must be handled by
software.
When using the CLI instruction to disable interrupts, the interrupts will be immediately
disabled. No interrupt will be executed after the CLI instruction, even if it occurs
simultaneously with the CLI instruction. The following example shows how this can be
used to avoid interrupts during the timed EEPROM write sequence.
Assembly Code Example
in r16, SREG ; store SREG value
cli ; disable interrupts during timed sequence
sbi EECR, EEMPE ; start EEPROM write
sbi EECR, EEPE
out SREG, r16 ; restore SREG value (I-bit)
C Code Example
char cSREG;
cSREG = SREG; /* store SREG value */
/* disable interrupts during timed sequence */
__disable_interrupt();
EECR |= (1<<EEMPE); /* start EEPROM write */
EECR |= (1<<EEPE);
SREG = cSREG; /* restore SREG value (I-bit) */
When using the SEI instruction to enable interrupts, the instruction following SEI will be
executed before any pending interrupts, as shown in this example.
Assembly Code Example
sei ; set Global Interrupt Enable
sleep; enter sleep, waiting for interrupt
相關(guān)PDF資料
PDF描述
IF180C52TXXX-36:RD 8-BIT, MROM, 36 MHz, MICROCONTROLLER, PQFP44
IT80C52EXXX-30SHXXX:R 8-BIT, MROM, 30 MHz, MICROCONTROLLER, PQFP44
MC80C52CXXX-20/883D 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CDIP40
MR80C52CXXX-25SB 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQCC44
MR80C52UXXX-25 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQCC44
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IQ80T B 制造商:Omnimount 功能描述:Tilt Mount for Flat Panel Televisions 23"~42" 80lb. Capacity 制造商:OMNIMOUNT 功能描述:DWO FLAT PANEL MOUNT TILT FOR 23 IN - 42 IN FLAT PANELS
IQ81349SC 888389 制造商:Intel 功能描述:IQ81349SC - Bulk
IQ82C55A 功能描述:IC I/O EXPANDER 24B 44MQFP RoHS:否 類別:集成電路 (IC) >> 接口 - I/O 擴(kuò)展器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 接口:I²C，JTAG 輸入/輸出數(shù):9 中斷輸出:無(wú) 頻率 - 時(shí)鐘:400kHz 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件 包括:EEPROM
IQ82C55A96 功能描述:IC I/O EXPANDER 24B 44MQFP RoHS:否 類別:集成電路 (IC) >> 接口 - I/O 擴(kuò)展器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 接口:I²C，JTAG 輸入/輸出數(shù):9 中斷輸出:無(wú) 頻率 - 時(shí)鐘:400kHz 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件 包括:EEPROM
IQ82C55AZ 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI PERI PRG-I/O 5V 8MHZ INDUSTRIAL TEMP RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*