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參數資料
| 型號： | HMS99C51 |
| 廠商： | Hynix Semiconductor Inc. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| 中文描述： | 8位單晶片微控制器 |
| 文件頁數： | 26/43頁 |
| 文件大小： | 533K |
| 代理商： | HMS99C51 |
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HMS99C5X Series
22
Jan. 2003 Ver 1.0
A low-priority interrupt can itself be interrupted by a high-priority interrupt, but not by another low priority in-
terrupt. A high-priority interrupt cannot be interrupted by any other interrupt source.
If two requests of different priority level are received simultaneously, the request of higher priority is serviced.
If requests of the same priority are received simultaneously, an internal polling sequence determines which re-
quest is serviced. Thus within each priority level there is a second priority structure determined by the polling
sequence as shown in Table 9.
Table 8. Interrupt Sources and their Corresponding Interrupt Vectors
Source (Request Flags)
Vectors
Vector Address
RESET
IE0
TF0
IE1
TF1
RI
+
TI
TF2
+
EXF2
RESET
External interrupt 0
Timer 0 interrupt
External interrupt 1
Timer 1 interrupt
Serial port interrupt
Timer 2 interrupt
0000H
0003H
000BH
0013H
001BH
0023H
002BH
Table 9. Interrupt Priority-Within-Level
Interrupt Source
Priority
External Interrupt 0
Timer 0 Interrupt
External Interrupt 1
Timer 1 Interrupt
Serial Channel
Timer 2 Interrupt
IE0
TF0
IE1
TF1
RI + TI
TF2 + EXF2
High
↓
↓
↓
↓
Low
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| HMS99C51S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS WITH EMBEDDED FLASH |
| HMS99C52 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS |
| HMS99C52S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS WITH EMBEDDED FLASH |
| HMS99C54S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS WITH EMBEDDED FLASH |
| HMS99C56S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS WITH EMBEDDED FLASH |
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