參數(shù)資料
型號： MC68HC705JJ7CP
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP20
封裝： PLASTIC, DIP-20
文件頁數(shù)： 98/164頁
文件大?。?/td> 1165K
代理商： MC68HC705JJ7CP
Core Timer Interrupts
MC68HC705JJ7 MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
Freescale Semiconductor
39
Therefore, the lowest power is consumed when OM1 is cleared. The state with both OM1 and OM2
set is provided so that the EPO can be started and allowed to stabilize while the LPO still clocks the
MCU. The reset state is for OM1 to be cleared and OM2 to be set, which selects the LPO and disables
the EPO.
IRQF — External Interrupt Request Flag
The IRQ flag is a clearable, read-only bit that is set when an external interrupt request is pending.
Writing to the IRQF bit has no effect. Reset clears the IRQF bit.
1 = Interrupt request pending
0 = No interrupt request pending
The following conditions set the IRQ flag:
An external interrupt signal on the IRQ/VPP pin
An external interrupt signal on pin PA0, PA1, PA2, or PA3
when the PA0–PA3 pins are enabled by the PIRQ bit in the MOR to serve as external interrupt
sources.
The following conditions clear the IRQ flag:
When the CPU fetches the interrupt vector
When a logic 1 is written to the IRQR bit
IRQR — Interrupt Request Reset Bit
This write-only bit clears the IRQF flag bit and prevents redundant execution of interrupt routines.
Writing a logic 1 to IRQR clears the IRQF. Writing a logic 0 to IRQR has no effect. IRQR always reads
as a logic 0. Reset has no effect on IRQR.
1 = Clear IRQF flag bit
0 = No effect
4.6 Core Timer Interrupts
The core timer can generate the following interrupts:
Timer overflow interrupt
Real-time interrupt
Setting the I bit in the condition code register disables core timer interrupts. The controls and flags for
these interrupts are in the core timer status and control register (CTSCR) located at $0008.
4.6.1 Core Timer Overflow Interrupt
An overflow interrupt request occurs if the core timer overflow flag (TOF) becomes set while the core timer
overflow interrupt enable bit (TOFE) is also set. The TOF flag bit can be reset by writing a logic 1 to the
CTOFR bit in the CTSCR or by a reset of the device.
4.6.2 Real-Time Interrupt
A real-time interrupt request occurs if the real-time interrupt flag (RTIF) in the CTSCR becomes set while
the real-time interrupt enable bit (RTIE) is also set. The RTIF flag bit can be reset by writing a logical 1 to
the RTIFR bit in the CTSCR or by a reset of the device.
相關(guān)PDF資料
PDF描述
MC68HC705JJ7S 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER, CDIP20
MC68HC705K1DWR2 8-BIT, OTPROM, MICROCONTROLLER, PDSO16
MC68HC705K1CP 8-BIT, OTPROM, MICROCONTROLLER, PDIP16
MC68HC705K1P 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDIP16
MC68HC705K1DW 8-BIT, OTPROM, MICROCONTROLLER, PDSO16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC705JP7CDW 功能描述:IC MCU 8BIT 28-SOIC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標準包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設(shè)備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND
MC68HC705JP7CP 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述:
MC68HC705K1CDW 制造商:Motorola Inc 功能描述:
MC68HC705KJ1CDW 功能描述:8位微控制器 -MCU 8 Bit 4MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC68HC705KJ1CP 功能描述:IC MCU 4MHZ 1.2K OTP 16-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標準包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設(shè)備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND
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