参数资料
型号: MC68HC805K3DW
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, EEPROM, 2 MHz, MICROCONTROLLER, PDSO16
封装: SOIC-16
文件页数: 61/119页
文件大小: 496K
代理商: MC68HC805K3DW
General Release Specication
Hardware Interrupts
MC68HC805K3 — Rev. 1.0
46
Interrupts
MOTOROLA
the external IRQ sources to be inactive if the edge- and level-sensitive
mask option register bit is selected. In this way, any additional setting
of the IRQF flag bit while in the service routine can be ignored by
clearing the IRQF flag bit just before exiting the service routine. If the
IRQF flag bit is set again while in the IRQ service routine, the CPU re-
enters the IRQ interrupt sequence unless the IRQF flag bit is cleared.
The IRQF flag bit is cleared by reset.
IRQE — IRQ Interrupt Enable
The IRQE bit enables or disables the IRQF flag bit to initiate an IRQ
interrupt sequence. If the IRQE enable bit is set, the IRQF flag bit can
generate an interrupt sequence. If the IRQE enable bit is cleared, the
IRQF flag bit cannot generate an interrupt sequence. Reset sets the
IRQE enable bit, thereby enabling IRQ interrupts once the I bit is
cleared. Execution of the STOP or WAIT instructions causes the
IRQE bit to be set to allow the external IRQ to exit these modes. In
addition, reset also sets the I bit, which masks all interrupt sources.
NOTE:
If the I bit is cleared, any instruction that sets the IRQE enable bit when
the IRQF flag bit is already set initiates an IRQ interrupt sequence
immediately after that instruction.
4.6.3 Port Interrupts (PA0–PA3)
The IRQ interrupt also can be triggered by inputs to PA0 through PA3
port pins as described in 4.6.1 External Interrupt (IRQ) if the port
interrupts mask option register bit is used. If enabled, the lower four bits
of port A can activate the IRQ interrupt function and the interrupt
operation is the same as the input to the IRQ pin. The mask option
register bit allows all of these input pins to be ORed with the input
present on the IRQ pin. All PA0 through PA3 pins must be selected as a
group and as an additional IRQ interrupt source. All the port A interrupt
sources also are controlled by the IRQE enable bit.
NOTE:
The BIH and BIL instructions apply only to the level on the IRQ pin itself
and not to the output of the logic OR gate with PA0 through PA3 pins.
The state of the individual port A pins can be checked by reading the
appropriate port A pins as inputs.
相关PDF资料
PDF描述
MC68HC812A4PV8 16-BIT, EEPROM, 8 MHz, MICROCONTROLLER, PQFP112
MC68HC901FNR2 MULTIFUNCTION PERIPHERAL, PQCC52
MC68HC908AS32AVFUE 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PQFP64
MC68HC908AS32AMFNE 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PQCC52
MC68HC908AS32AVFNE 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PQCC52
相关代理商/技术参数
参数描述
MC68HC805P18MDW 制造商:Freescale Semiconductor 功能描述:
MC68HC908AB32CFU 功能描述:IC MCU 8MHZ 32K FLASH 64-QFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:HC08 其它有关文件:STM32F101T8 View All Specifications 特色产品:STM32 32-bit Cortex MCUs 标准包装:490 系列:STM32 F1 核心处理器:ARM? Cortex?-M3 芯体尺寸:32-位 速度:36MHz 连通性:I²C,IrDA,LIN,SPI,UART/USART 外围设备:DMA,PDR,POR,PVD,PWM,温度传感器,WDT 输入/输出数:26 程序存储器容量:64KB(64K x 8) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:10K x 8 电压 - 电源 (Vcc/Vdd):2 V ~ 3.6 V 数据转换器:A/D 10x12b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:36-VFQFN,36-VFQFPN 包装:托盘 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... 其它名称:497-9032STM32F101T8U6-ND
MC68HC908AB32MFU 制造商:Rochester Electronics LLC 功能描述:32K FLASH & 512 EE - Bulk
MC68HC908AB32MPB 功能描述:IC MCU 32K FLASH 8MHZ 64-LQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:HC08 标准包装:250 系列:56F8xxx 核心处理器:56800E 芯体尺寸:16-位 速度:60MHz 连通性:CAN,SCI,SPI 外围设备:POR,PWM,温度传感器,WDT 输入/输出数:21 程序存储器容量:40KB(20K x 16) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:6K x 16 电压 - 电源 (Vcc/Vdd):2.25 V ~ 3.6 V 数据转换器:A/D 6x12b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:48-LQFP 包装:托盘 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
MC68HC908AP16CB 功能描述:IC MCU 16K FLASH 8MHZ 42SDIP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:HC08 标准包装:250 系列:56F8xxx 核心处理器:56800E 芯体尺寸:16-位 速度:60MHz 连通性:CAN,SCI,SPI 外围设备:POR,PWM,温度传感器,WDT 输入/输出数:21 程序存储器容量:40KB(20K x 16) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:6K x 16 电压 - 电源 (Vcc/Vdd):2.25 V ~ 3.6 V 数据转换器:A/D 6x12b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:48-LQFP 包装:托盘 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323