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参数资料
| 型号： | M37481E8SP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP42 |
| 封装： | 0.600 INCH, 1.78 MM PITCH, SHRINK, PLASTIC, DIP-42 |
| 文件页数： | 14/100页 |
| 文件大小： | 1457K |
| 代理商： | M37481E8SP |
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17
MITSUBISHI MICROCOMPUTERS
7480/7481 GROUP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to change.
Interrupts
Interrupts are vectored interrupts, and they can be caused by 14
different sources: 5 external sources, 8 internal sources, and 1
software source.
(1) Interrupt Control
All interrupts, except the BRK instruction interrupt, have an inter-
rupt request bit and an interrupt enable bit. Additionally, a global
interrupt disable flag affects them.
When the interrupt enable bit and the interrupt request bit are set
to "1" and the interrupt disable flag is set to "0", an interrupt is ac-
cepted.
The interrupt request bits can be cleared by the program but can-
not be set. The interrupt enable bit can be set and cleared by the
program.
The reset and BRK instruction interrupt can never be disabled.
Other interrupts are disabled when the interrupt disable flag is set.
(2) Interrupt Operation
When an interrupt request is accepted:
1. The contents of the program counter and the processor status
register are automatically pushed into the stack.
2. The interrupt disable flag is set and the interrupt request bit is
cleared.
3. The interrupt jump destination address is read into the program
counter.
s Notes
When the active edge of an external interrupt (INT0, INT1,
CNTR0, CNTR1) is set, the interrupt request bit may also be set.
Therefore, disable the external interrupt and set the edge polar-
ity selection register. Then clear the interrupt request bit and
accept the external interrupt.
Input a trigger width over 250 ns to the INT0/INT1 pin.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M37481E8SS | 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT 740 CISC 16KB EPROM 5V 42PIN SDIP - Bulk |
| M37481E8T | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37481E8T-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES |
| M37481E8T-XXXSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37481E8-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES |
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