参数资料
型号: ST72F60E1M1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO24
封装: 0.300 INCH, LEAD FREE, PLASTIC, SOP-24
文件页数: 65/139页
文件大小: 1993K
代理商: ST72F60E1M1
ST7260xx
Interrupts
31/139
Peripheral interrupts
Different peripheral interrupt flags in the status register are able to cause an interrupt when
they are active if both:
The I bit of the CC register is cleared.
The corresponding enable bit is set in the control register.
If any of these two conditions is false, the interrupt is latched and thus remains pending.
Clearing an interrupt request is done by one of the two following operations:
Writing “0” to the corresponding bit in the status register.
Accessing the status register while the flag is set followed by a read or write of an
associated register.
Note:
1
The clearing sequence resets the internal latch. A pending interrupt (i.e. waiting to be
enabled) will therefore be lost if the clear sequence is executed.
2
All interrupts allow the processor to leave the Wait low power mode.
3
Exit from Halt mode may only be triggered by an External Interrupt on one of the ITi ports
(PA4-PA7 and PB4-PB7), an end suspend mode Interrupt coming from USB peripheral, or a
reset.
Figure 16.
Interrupt processing flowchart
BIT I SET
Y
N
IRET
Y
N
FROM RESET
LOAD PC FROM INTERRUPT VECTOR
STACK PC, X, A, CC
SET I BIT
FETCH NEXT INSTRUCTION
EXECUTE INSTRUCTION
THIS CLEARS I BIT BY DEFAULT
RESTORE PC, X, A, CC FROM STACK
INTERRUPT
Y
N
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ST72F60E2M1 功能描述:8位微控制器 -MCU ST7262 Lo Spd USB 8B MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
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