參數(shù)資料
型號(hào)： HT95CXXX
廠商： Holtek Semiconductor Inc.
英文描述： CID Type Phone 8-Bit MCU
中文描述： 刑事偵緝式電話8位微控制器
文件頁(yè)數(shù)： 15/51頁(yè)
文件大?。?/td> 384K
代理商： HT95CXXX
HT95CXXX
Rev. 1.50
15
May 26, 2005
If the stack is full, any other interrupt request will not be
acknowledged, even if the related interrupt is enabled,
until the stack pointer is decremented. If immediate ser-
vice is desired, the stack must be prevented from be-
coming full.
All these kinds of interrupts have a wake-up capability.
As an interrupt is serviced, a control transfer occurs by
pushing the program counter onto the stack, followed by
a branch to a subroutine at specified location in the pro-
gram memory. Only the program counter is pushed onto
the stack. If the contents of the register or status register
(STATUS) are altered by the interrupt service program
which corrupts the desired control sequence, the con-
tents should be saved in advance.
External interrupt is triggered by a high to low transition
of the INT/TMR1 pin and the interrupt request flag EIF
will be set. When the external interrupt is enabled, the
stackisnotfullandtheexternalinterruptisactive,asub-
routine call to location 04H will occur. The interrupt re-
quest flag EIF and EMI bits will be cleared to disable
other interrupts.
The Timer/Event Counter 0 interrupt is generated by a
timeout overflow and the interrupt request flag T0F will
be set. When the Timer/Event Counter 0 interrupt is en-
abled, the stack is not full and the T0F bit is set, a sub-
routine call to location 08H will occur. The interrupt
request flag T0F and EMI bits will be cleared to disable
further interrupts.
The Timer/Event Counter 1 interrupt is generated by a
timeout overflow and the interrupt request flag T1F will
be set. When the Timer/Event Counter 1 interrupt is en-
abled, the stack is not full and the T1F bit is set, a sub-
routine call to location 0CH will occur. The interrupt
request flag T1F and EMI bits will be cleared to disable
further interrupts.
The peripheral interrupt is activated when the FSK de-
coder detect the ring signal or line reversal or FSK car-
rier signal or FSK packet data. When these interrupts
occurred, the interrupt request flag PERF will be set.
Whentheperipheralinterruptisenabled,thestackisnot
full and the PERF is set, a subroutine call to location
10H will occur. The interrupt request flag PERF and EMI
bits will be cleared to disable other interrupts.
The real time clock interrupt is generated by a 1Hz RTC
generator. When the RTC time-out occurs, the interrupt
request flag RTCF will be set. When the RTC interrupt is
enabled, the stack is not full and the RTCF is set, a sub-
routine call to location 14H will occur. The interrupt re-
quest flag RTCF and EMI bits will be cleared to disable
other interrupts.
The dialer I/O interrupt is triggered by any edge transi-
tion onto HKS pin or a falling edge transition onto HDI
pin or a rising edge transition onto HFI pin, the interrupt
request flag DRF will be set. When the dialer I/O inter-
rupt is enabled, the stack is not full and the DRF is set, a
subroutine call to location 18H will occur. The interrupt
request flag DRF and EMI bits will be cleared to disable
other interrupts.
Bit No.
Label
R/W
Function
0
EMI
RW
Controls the master (global) interrupt (1=enabled; 0=disabled)
1
EEI
RW
Controls the external interrupt (1=enabled; 0=disabled)
2
ET0I
RW
Controls the Timer/Event Counter 0 interrupt (1=enabled; 0=disabled)
3
ET1I
RW
Controls the Timer/Event Counter1 interrupt (1=enabled; 0=disabled)
4
EIF
RW
External interrupt request flag (1=active; 0=inactive)
5
T0F
RW
Timer/Event Counter 0 request flag (1=active; 0=inactive)
6
T1F
RW
Timer/Event Counter1 request flag (1=active; 0=inactive)
7
RO
Unused bit, read as 0
INTC0 (0BH) Register
Bit No.
Label
R/W
Function
0
EPERI
RW
Control the peripheral interrupt (1=enable; 0=disable)
1
ERTCI
RW
Control the real time clock interrupt (1=enable; 0=disable)
2
EDRI
RW
Control the dialer I/O interrupt (1=enable; 0=disable)
3
RO
Unused bit, read as 0
4
PERF
RW
Peripheral interrupt request flag (1=active; 0=inactive)
5
RTCF
RW
Internal real time clock interrupt request flag (1=active; 0=inactive)
6
DRF
RW
Internal dialer I/O interrupt request flag (1=active: 0=inactive)
7
RO
Unused bit, read as 0
INTC1 (1EH) Register
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