- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄190063 > PIC17C7X PDF資料下載
參數(shù)資料
| 型號(hào)： | PIC17C7X |
| 文件頁數(shù)： | 14/71頁 |
| 文件大?。?/td> | 1173K |
| 代理商： | PIC17C7X |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁當(dāng)前第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁
1996 Microchip Technology Inc.
DS30412C-page 21
PIC17C4X
5.0
INTERRUPTS
The PIC17C4X devices have 11 sources of interrupt:
External interrupt from the RA0/INT pin
Change on RB7:RB0 pins
TMR0 Overow
TMR1 Overow
TMR2 Overow
TMR3 Overow
USART Transmit buffer empty
USART Receive buffer full
Capture1
Capture2
T0CKI edge occurred
There are four registers used in the control and status
of interrupts. These are:
CPUSTA
INTSTA
PIE
PIR
The CPUSTA register contains the GLINTD bit. This is
the Global Interrupt Disable bit. When this bit is set, all
interrupts are disabled. This bit is part of the controller
core functionality and is described in the Memory Orga-
nization section.
When an interrupt is responded to, the GLINTD bit is
automatically set to disable any further interrupt, the
return address is pushed onto the stack and the PC is
loaded with the interrupt vector address. There are four
interrupt vectors. Each vector address is for a specic
interrupt source (except the peripheral interrupts which
have the same vector address). These sources are:
External interrupt from the RA0/INT pin
TMR0 Overow
T0CKI edge occurred
Any peripheral interrupt
When program execution vectors to one of these inter-
rupt vector addresses (except for the peripheral inter-
rupt address), the interrupt ag bit is automatically
cleared. Vectoring to the peripheral interrupt vector
address does not automatically clear the source of the
interrupt. In the peripheral interrupt service routine, the
source(s) of the interrupt can be determined by testing
the interrupt ag bits. The interrupt ag bit(s) must be
cleared in software before re-enabling interrupts to
avoid innite interrupt requests.
All of the individual interrupt ag bits will be set regard-
less of the status of their corresponding mask bit or the
GLINTD bit.
For external interrupt events, there will be an interrupt
latency. For two cycle instructions, the latency could be
one instruction cycle longer.
The “return from interrupt” instruction, RETFIE, can be
used to mark the end of the interrupt service routine.
When this instruction is executed, the stack is
“POPed”, and the GLINTD bit is cleared (to re-enable
interrupts).
FIGURE 5-1:
INTERRUPT LOGIC
TMR1IF
TMR1IE
TMR2IF
TMR2IE
TMR3IF
TMR3IE
CA1IF
CA1IE
CA2IF
CA2IE
TXIF
TXIE
RCIF
RCIE
RBIF
RBIE
T0IF
T0IE
INTF
INTE
T0CKIF
T0CKIE
GLINTD
PEIE
Wake-up (If in SLEEP mode)
or terminate long write
Interrupt to CPU
PEIF
This document was created with FrameMaker404
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PIC17C44 | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| PIC17C766T-33E/L | 8-BIT, OTPROM, 33 MHz, RISC MICROCONTROLLER, PQCC84 |
| PIC18C242-I/SO | 8-BIT, OTPROM, 40 MHz, RISC MICROCONTROLLER, PDSO28 |
| PIC18C442-E/L | 8-BIT, OTPROM, 40 MHz, RISC MICROCONTROLLER, PQCC44 |
| PIC18F2515 | PIC18FX515/X610 Product Brief |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PIC17LC42A-08/L | 功能描述:8位微控制器 -MCU 4KB 232 RAM 33 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 |
| PIC17LC42A-08/P | 功能描述:8位微控制器 -MCU 4KB 232 RAM 33 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 |
| PIC17LC42A-08/PQ | 功能描述:8位微控制器 -MCU 4KB 232 RAM 33 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 |
| PIC17LC42A-08/PT | 功能描述:8位微控制器 -MCU 4KB 232 RAM 33 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 |
| PIC17LC42A-08I/L | 功能描述:8位微控制器 -MCU 4KB 232 RAM 33 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。