- 您现在的位置：买卖IC网 > PDF目录190063 > 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 PDF资料下载
参数资料
| 型号： | PIC17C44 |
| 元件分类： | 外设及接口 |
| 英文描述： | 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 |
| 中文描述： | 电可擦除可编程逻辑器件 |
| 文件页数： | 14/71页 |
| 文件大小： | 1173K |
| 代理商： | PIC17C44 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页
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
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| PIC18F2539 | PIC18F2539 Motor Control Evaluation Kit |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PIC17C44/JW | 功能描述:8位微控制器 -MCU 16KB 454 RAM 33 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC17C44-16/L | 功能描述:8位微控制器 -MCU 16KB 454 RAM 33 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC17C44-16/P | 功能描述:8位微控制器 -MCU 16KB 454 RAM 33 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC17C44-16/P | 制造商:Microchip Technology Inc 功能描述:IC 8-BIT CMOS MCU OTP ((NS)) |
| PIC17C44-16/PQ | 功能描述:8位微控制器 -MCU 16KB 454 RAM 33 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
发布紧急采购，3分钟左右您将得到回复。