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參數資料
| 型號： | W78C54P-40 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數： | 9/22頁 |
| 文件大小： | 304K |
| 代理商： | W78C54P-40 |
W78C54
Publication Release Date: December 1997
- 9 -
Revision A2
* Interrupts
***IE - Interrupt Enable (A8H)
EA
-
ET2
ES
ET1
EX1
ET0
EX0
EA: Lobal interrupt enable flag
ET2: Timer 2 overflow interrupt enable
ES: Serial port interrupt enable
EX1: External interrupt 1 enable
ET1: Timer 1 overflow interrupt enable
EX0: External interrupt 0 enable
***IP - Interrupt Priority (B8H)
-
-
PT2
PS
PT1
PX1
PT0
PX0
PT2: Timer 2 interrupt priority high if set
PS: Serial port priority high if set
PT1: Timer 1 interrupt priority high if set
PX1: External interrupt 1 priority high if set
PT0: Timer 0 interrupt priority high if set
PX0: External interrupt 0 priority high if set
***XICON - External Interrupt Control (C0H)
PX3
EX3
IE3
IT3
PX2
EX2
IE2
IT2
PX3: External interrupt 3 priority high if set
EX3: External interrupt 3 enable if set
IE3: If IT3 = 1, IE3 is set/cleared automatically by hardware when interrupt is detected/serviced
IT3: External interrupt 3 is falling-edge/low-level triggered when this bit is set/cleared by software
PX2: External interrupt 2 priority high if set
EX2: External interrupt 2 enable if set
IE2: If IT2 = 1, IE2 is set/cleared automatically by hardware when interrupt is detected/serviced
IT2: External interrupt 2 is falling-edge/low-level triggered when this bit is set/cleared by software
The W78C54 supports an eight-source and a four-priority-level interrupt architectures. Besides the
SFRs of IP and IE to control the six-source of the standard 8052 interrupt functions. There is an
another SFR (XICON) to control the extra two-source of the external interrrupt (INT2 and INT3). This
priority scheme is formed by combining IPH with IP to determine the priority of each interrupt. Except
the INT2 and INT3, they are not defined in IP
SFR
but in XICON.
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| W78C58 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT EMULATION MICROCONTROLLER |
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| W78C58-24 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
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| W78C58-40 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
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