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| 型號(hào)： | MC80C0224K |
| 廠商： | Electronic Theatre Controls, 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(yè)數(shù)： | 91/128頁(yè) |
| 文件大?。?/td> | 1408K |
| 代理商： | MC80C0224K |
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Preliminary
MC80F0208/16/24
MAR. 2005 Ver 0.2
87
The Basic Interval Timer Interrupt is generated by BITIF which
is set by a overflow in the timer counter register.
The UART0 receive/transmit interrupt is generated by UART0IF
is set by completion of UART0 data reception or transmission.
The IFR(Interrupt Flag Register) is used for discrimination of the
interrupt source among these two UART0 receive and UART0
transmit Interrupt.
The SIO interrupt is generated by SIOIF which is set by comple-
tion of SIO data reception or transmission.
The interrupts are controlled by the interrupt master enable flag
I-flag (bit 2 of PSW on Figure 8-3), the interrupt enable register
(IENH, IENL), and the interrupt request flags (in IRQH and
IRQL) except Power-on reset and software BRK interrupt. The
Table 19-1 shows the Interrupt priority.
Vector addresses are shown in Figure 8-6. Interrupt enable regis-
ters are shown in Figure 19-2. These registers are composed of in-
terrupt enable flags of each interrupt source and these flags
determines whether an interrupt will be accepted or not. When
enable flag is “0”, a corresponding interrupt source is prohibited.
Note that PSW contains also a master enable bit, I-flag, which
disables all interrupts at once.
Figure 19-2 Interrupt Enable Flag Register
Reset/Interrupt
Symbol
Priority
Hardware Reset
External Interrupt 0
External Interrupt 1
External Interrupt 2
External Interrupt 3
UART0 Rx/Tx Interrupt
UART1 Rx/Tx Interrupt
Serial Input/Output
Timer/Counter 0
Timer/Counter 1
Timer/Counter 2
Timer/Counter 3
Timer/Counter 4
ADC Interrupt
Watchdog/Watch Timer
Basic Interval Timer
RESET
INT0
INT1
INT2
INT3
UART0
UART1
SIO
Timer 0
Timer 1
Timer 2
Timer 3
Timer 4
ADC
WDT_WT
BIT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Table 19-1 Interrupt Priority
INT3E
R/W
INT0E
Timer/Counter 0 interrupt enable flag
Serial Communication interrupt enable flag
UART1 Tx/Rx interrupt enable flag
UART0 Tx/Rx interrupt enable flag
INITIAL VALUE: 0000 0000
B
ADDRESS: 0EA
H
IENH
INT1E
MSB
LSB
SIOE
T0E
UART0E
INT2E
R/W
R/W
External interrupt 0 enable flag
External interrupt 1 enable flag
External interrupt 2 enable flag
External interrupt 3 enable flag
R/W
R/W
R/W
R/W
R/W
R/W
T1E
INITIAL VALUE: 0000 0000
B
ADDRESS: 0EB
H
IENL
T2E
MSB
R/W
Timer/Counter 4 interrupt enable flag
Timer/Counter 3 interrupt enable flag
Timer/Counter 2 interrupt enable flag
Timer/Counter 1 interrupt enable flag
R/W
R/W
LSB
R/W
ADCE WDTE
R/W
R/W
R/W
T3E
T4E
WTE
BITE
Basic Interval Timer interrupt enable flag
Watch timer interrupt enable flag
Watchdog timer interrupt enable flag
A/D Converter interrupt enable flag
UART1E
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