參數(shù)資料
型號: PIC16C63A
廠商: Microchip Technology Inc.
英文描述: 8-Bit CMOS Microcontrollers with A/D Converter(8位、帶A/D轉(zhuǎn)換器的CMOS微控制器)
中文描述: 8位CMOS微控制器與A / D轉(zhuǎn)換器(8位,帶的A / D轉(zhuǎn)換器的的CMOS微控制器)
文件頁數(shù): 93/184頁
文件大?。?/td> 2230K
代理商: PIC16C63A
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2000 Microchip Technology Inc.
DS30605C-page 93
PIC16C63A/65B/73B/74B
13.5
Interrupts
The Interrupt Control register (INTCON) records indi-
vidual interrupt requests in flag bits. It also has individ-
ual and global interrupt enable bits.
A global interrupt enable bit, GIE (INTCON<7>),
enables (if set) all unmasked interrupts, or disables (if
cleared) all interrupts. When bit GIE is enabled, and an
interrupt
s flag bit and mask bit are set, the interrupt will
vector immediately. Individual interrupts can be dis-
abled through their corresponding enable bits in vari-
ous registers. Individual interrupt bits are set,
regardless of the status of the GIE bit. The GIE bit is
cleared on RESET.
The
return from interrupt
instruction,
RETFIE
, exits
the interrupt routine, as well as sets the GIE bit, which
re-enables interrupts.
The RB0/INT pin interrupt, the RB port change interrupt
and the TMR0 overflow interrupt flags are contained in
the INTCON register.
The peripheral interrupt flags are contained in the spe-
cial function registers PIR1 and PIR2. The correspond-
ing interrupt enable bits are contained in special
function registers PIE1 and PIE2 and the peripheral
interrupt enable bit is contained in special function reg-
ister INTCON.
When an interrupt is responded to, the GIE bit is
cleared to disable any further interrupt, the return
address is pushed onto the stack, and the PC is loaded
with 0004h. Once in the Interrupt Service Routine, the
source(s) of the interrupt can be determined by polling
the interrupt flag bits. The interrupt flag bit(s) must be
cleared in software before re-enabling interrupts to
avoid recursive interrupts.
For external interrupt events, such as the INT pin or
PORTB change interrupt, the interrupt latency will be
three or four instruction cycles. The exact latency
depends when the interrupt event occurs. The latency
is the same for one or two cycle instructions. Individual
interrupt flag bits are set, regardless of the status of
their corresponding mask bit, PEIE bit, or the GIE bit.
Note:
Individual interrupt flag bits are set, regard-
less of the status of their corresponding
mask bit, or the GIE bit.
Note:
If an interrupt occurs while the Global Inter-
rupt Enable (GIE) bit is being cleared, the
GIE bit may unintentionally be re-enabled
by the user
s Interrupt Service Routine (the
RETFIE
instruction). The events that
would cause this to occur are:
An instruction clears the GIE bit while an
interrupt is acknowledged.
The program branches to the interrupt
vector and executes the Interrupt
Service Routine.
The Interrupt Service Routine completes
the execution of the
RETFIE
instruction.
This causes the GIE bit to be set
(enables interrupts), and the program
returns to the instruction after the one
which was meant to disable interrupts.
Perform the following to ensure that inter-
rupts are globally disabled:
1.
2.
3.
LOOP BCF INTCON, GIE ; Disable global
; interrupt bit
BTFSC INTCON, GIE
; Global interrupt
; disabled
GOTO LOOP ; NO, try again
: ; Yes, continue
; with program
; flow
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參數(shù)描述
PIC16C63A/JW 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC16C63A-04/SO 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC16C63A-04/SO 制造商:Microchip Technology Inc 功能描述:8BIT CMOS MCU SMD 16C63 SOIC28
PIC16C63A-04/SP 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC16C63A-04/SP 制造商:Microchip Technology Inc 功能描述:IC 8BIT CMOS MCU 16C63 SDIL28