參數(shù)資料
型號(hào): PIC16C923
廠商: Microchip Technology Inc.
英文描述: 8-Bit CMOS Microcontroller with LCD Driver(每個(gè)I/O口有25mA驅(qū)動(dòng)/吸收電流,1路捕捉/比較/PWM的微控制器)
中文描述: 8位CMOS微控制器與LCD驅(qū)動(dòng)器(每個(gè)的I / O口有25毫安驅(qū)動(dòng)/吸收電流,1路捕捉/比較/脈寬調(diào)制的微控制器)
文件頁(yè)數(shù): 113/189頁(yè)
文件大?。?/td> 1544K
代理商: PIC16C923
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1997 Microchip Technology Inc.
DS30444E - page 113
PIC16C9XX
14.5
The PIC16C9XX family has up to 9 sources of interrupt:
Interrupts
The interrupt control register (INTCON) records individ-
ual interrupt requests in flag bits. It also has individual
and global interrupt enable bits.
Interrupt Sources
Applicable
Devices
External interrupt RB0/INT
TMR0 overflow interrupt
PORTB change interrupts
(pins RB7:RB4)
A/D Interrupt
TMR1 overflow interrupt
TMR2 matches period interrupt
CCP1 interrupt
Synchronous serial port interrupt
LCD Module interrupt
923
923
923
924
924
924
923
923
923
923
923
923
924
924
924
924
924
924
Note:
Individual interrupt flag bits are set regard-
less of the status of their corresponding
mask bit or the GIE bit.
A global interrupt enable bit, GIE (INTCON<7>)
enables (if set) all un-masked 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 various
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 register PIR1. The corresponding interrupt
enable bits are contained in special function register
PIE1, and the peripheral interrupt enable bit is con-
tained in special function register INTCON.
When an interrupt is responded to, the GIE bit is
cleared to disable any further interrupts, 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 RB0/INT pin
or RB Port change interrupt, the interrupt latency will be
three or four instruction cycles. The exact latency
depends
when
the
(Figure 14-15). 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
or the GIE bit.
interrupt
event
occurs
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC16C923-04/L 功能描述:8位微控制器 -MCU 7KB 176 RAM 52 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT
PIC16C923-04/L 制造商:Microchip Technology Inc 功能描述:8BIT CMOS MCU SMD 16C923 PLCC68
PIC16C923-04/PT 功能描述:8位微控制器 -MCU 7KB 176 RAM 52 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT
PIC16C923-04/SP 制造商:Microchip Technology Inc 功能描述:
PIC16C923-04I/L 功能描述:8位微控制器 -MCU 7KB 176 RAM 52 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT