参数资料
型号: M34551E8-XXXFP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, OTPROM, MICROCONTROLLER, PQFP48
封装: 7 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-48
文件页数: 140/154页
文件大小: 1778K
代理商: M34551E8-XXXFP
APPLICATION
2.2 Interrupts
2-9
4551 Group User’s Manual
2.2 Interrupts
The 4551 Group has three interrupt sources : external interrupt (INT), timer 1 interrupt and timer 2 interrupt.
This section describes individual types of interrupts, related registers, application examples using interrupts
and notes.
2.2.1 Interrupt functions
(1)
External interrupt (INT)
The interrupt request occurs by the change of input level of INT pin.
The interrupt valid waveform can be selected by the bit 2 of the interrupt control register I1.
s External interrupt processing
q When the interrupt is used
The interrupt occurrence is enabled when the bit 0 of the interrupt control register V1 and the
interrupt enable flag INTE are set to “1.” When the external interrupt occurs, the interrupt processing
is executed from address 0 in page 1.
q When the interrupt is not used
The interrupt is disabled and the SNZ0 instruction is valid when the bit 0 of register V1 is set
to “0.”
(2)
Timer 1 interrupt
The interrupt request occurs by the timer 1 underflow.
s Timer 1 interrupt processing
q When the interrupt is used
The interrupt occurrence is enabled when the bit 2 of the interrupt control register V1 and the
interrupt enable flag INTE are set to “1.” When the timer 1 interrupt occurs, the interrupt processing
is executed from address 4 in page 1.
q When the interrupt is not used
The interrupt is disabled and the SNZT1 instruction is valid when the bit 2 of register V1 is set
to “0.”
(3)
Timer 2 interrupt
The interrupt request occurs by the timer 2 underflow.
s Timer 2 interrupt processing
q When the interrupt is used
The interrupt occurrence is enabled when the bit 3 of the interrupt control register V1 and the
interrupt enable flag INTE are set to “1.” When the timer 2 interrupt occurs, the interrupt processing
is executed from address 6 in page 1.
q When the interrupt is not used
The interrupt is disabled and the SNZT2 instruction is valid when the bit 3 of register V1 is set
to “0.”
相关PDF资料
PDF描述
M34554M8-XXXFP 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP64
M34554MC-XXXFP 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP64
M34571G6FP 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO24
M34584EDFP 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO42
M35047-XXXSP 24 X 12 CHARACTERS CRT CHAR DSPL CTLR, PDIP20
相关代理商/技术参数
参数描述
M34551M4 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:4-BIT SINGLE-CHIP MICROCOMPUTER
M34551M4-XXXFP 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTER
M34551M8 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:4-BIT SINGLE-CHIP MICROCOMPUTER
M34552G8FP 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34552G8HFP 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER