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參數資料
| 型號： | HTG2190 |
| 廠商： | Holtek Semiconductor Inc. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-Bit 1024 Pixel LCD Microcontroller |
| 中文描述： | 8位單片機1024像素LCD |
| 文件頁數： | 22/64頁 |
| 文件大小： | 417K |
| 代理商： | HTG2190 |
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HTG2190
Rev. 1.00
22
June 29, 2001
Register
Bit No.
Label
Function
INTC1
0
ET2I
Controls the Timer 2 interrupt.
(1=enable; 0=disable)
1
ET3I
Controls the Timer 3 interrupt.
(1=enable; 0=disable)
2
PWMI
PWM D/A interrupt
(1=enable; 0=disable)
3
Should be set "0" always.
4
T2F
Internal Timer 2 request flag.
(1=active; 0=inactive)
5
T3F
Internal Timer 3 request flag.
(1=active; 0=inactive)
6
PWMF
PWM D/A flag
(1=enable; 0=disable)
7
Should be set "0" always.
INTC1 register
Interrupt Source
Priority
Vector
External interrupt
1
04H
Timer/event
counter 0 overflow
2
08H
Timer/event
counter 1 overflow
3
0CH
Timer 2 overflow
4
10H
Timer 3 overflow
5
14H
PWM D/A interrupt
6
18H
The Timer/Event Counter 0/1 and timer 2/3 in-
terrupt request flag (T0F/T1F/T2F/T3F),
external interrupt request flag (EIF), PWM D/A
interrupt request flag (PWMF) enable timer/
event counter 0/1/2/3 bit (ET0I/ET1I/ET2I/
ET3I), enable PWM D/A interrupt bit (PWMI),
enable external interrupt bit (EEI) and enable
master interrupt bit (EMI) form the interrupt
control register (INTC0/INTC1) located at
0BH/1EH in the data memory. EMI, EEI, ET0I,
ET1I, ET2I, ET3I, PWMI, are used to control the
enabling/disabling of interrupts. These bits pre-
venttherequestedinterruptbeingserviced.Once
the interrupt request flags (T0F, T1F, T2F, T3F,
EIF, PWMF) are set, they will remain in the
INTC0/INTC1 register until the interrupts are
serviced or cleared by a software instruction.
It is recommended that application programs
do not use CALL subroutines within an inter-
rupt subroutine. Interruptsoftenoccurinanun-
predictable manner or need to be serviced
immediately in some applications. If only one
stack is left and the interrupt enable is not well
controlled,onceaCALLsubroutineifusedinthein-
terrupt subroutine will corrupt the original control
sequence.
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