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| 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： | 15/71页 |
| 文件大小： | 1173K |
| 代理商： | PIC17C44 |
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PIC17C4X
DS30412C-page 22
1996 Microchip Technology Inc.
5.1
Interrupt Status Register (INTSTA)
The Interrupt Status/Control register (INTSTA) records
the individual interrupt requests in ag bits, and con-
tains the individual interrupt enable bits (not for the
peripherals).
The PEIF bit is a read only, bit wise OR of all the periph-
eral ag bits in the PIR register (Figure 5-4).
Care should be taken when clearing any of the INTSTA
register enable bits when interrupts are enabled
(GLINTD is clear). If any of the INTSTA ag bits (T0IF,
INTF, T0CKIF, or PEIF) are set in the same instruction
cycle as the corresponding interrupt enable bit is
cleared, the device will vector to the reset address
(0x00).
When disabling any of the INTSTA enable bits, the
GLINTD bit should be set (disabled).
Note:
T0IF, INTF, T0CKIF, or PEIF will be set by
the specied condition, even if the corre-
sponding interrupt enable bit is clear (inter-
rupt disabled) or the GLINTD bit is set (all
interrupts disabled).
FIGURE 5-2: INTSTA REGISTER (ADDRESS: 07h, UNBANKED)
R - 0
R/W - 0 R/W - 0 R/W - 0
R/W - 0
PEIF
T0CKIF
T0IF
INTF
PEIE
T0CKIE
T0IE
INTE
R = Readable bit
W = Writable bit
- n = Value at POR reset
bit7
bit0
bit 7:
PEIF: Peripheral Interrupt Flag bit
This bit is the OR of all peripheral interrupt ag bits AND’ed with their corresponding enable bits.
1 = A peripheral interrupt is pending
0 = No peripheral interrupt is pending
bit 6:
T0CKIF: External Interrupt on T0CKI Pin Flag bit
This bit is cleared by hardware, when the interrupt logic forces program execution to vector (18h).
1 = The software specied edge occurred on the RA1/T0CKI pin
0 = The software specied edge did not occur on the RA1/T0CKI pin
bit 5:
T0IF: TMR0 Overow Interrupt Flag bit
This bit is cleared by hardware, when the interrupt logic forces program execution to vector (10h).
1 = TMR0 overowed
0 = TMR0 did not overow
bit 4:
INTF: External Interrupt on INT Pin Flag bit
This bit is cleared by hardware, when the interrupt logic forces program execution to vector (08h).
1 = The software specied edge occurred on the RA0/INT pin
0 = The software specied edge did not occur on the RA0/INT pin
bit 3:
PEIE: Peripheral Interrupt Enable bit
This bit enables all peripheral interrupts that have their corresponding enable bits set.
1 = Enable peripheral interrupts
0 = Disable peripheral interrupts
bit 2:
T0CKIE: External Interrupt on T0CKI Pin Enable bit
1 = Enable software specied edge interrupt on the RA1/T0CKI pin
0 = Disable interrupt on the RA1/T0CKI pin
bit 1:
T0IE: TMR0 Overow Interrupt Enable bit
1 = Enable TMR0 overow interrupt
0 = Disable TMR0 overow interrupt
bit 0:
INTE: External Interrupt on RA0/INT Pin Enable bit
1 = Enable software specied edge interrupt on the RA0/INT pin
0 = Disable software specied edge interrupt on the RA0/INT pin
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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 |
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