The interrupt re" />
參數資料
型號: MC68HC705J1ACDW
廠商: Freescale Semiconductor
文件頁數: 5/162頁
文件大?。?/td> 0K
描述: IC MCU 4MHZ 1.2K OTP 20-SOIC
標準包裝: 38
系列: HC05
核心處理器: HC05
芯體尺寸: 8-位
速度: 4MHz
外圍設備: POR,WDT
輸入/輸出數: 14
程序存儲器容量: 1.2KB(1.2K x 8)
程序存儲器類型: OTP
RAM 容量: 64 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
包裝: 管件
Technical Data
MC68HC705J1A — Rev. 4.0
External Interrupt Module (IRQ)
External Interrupt Module (IRQ)
8.3 Operation
The interrupt request/programming voltage pin (IRQ/VPP) and port A
pins 0–3 (PA0–PA3) provide external interrupts. The PIRQ bit in the
mask option register (MOR) enables PA0–PA3 as IRQ interrupt sources,
which are combined into a single ORing function to be latched by the
IRQ latch. Figure 8-1 shows the structure of the IRQ module.
After completing its current instruction, the CPU tests the IRQ latch. If the
IRQ latch is set, the CPU then tests the I bit in the condition code register
and the IRQE bit in the IRQ status and control register. If the
I bit is clear and the IRQE bit is set, the CPU then begins the interrupt
sequence. This interrupt is serviced by the interrupt service routine
located at $07FA and $07FB.
The CPU clears the IRQ latch while it fetches the interrupt vector, so that
another external interrupt request can be latched during the interrupt
service routine. As soon as the I bit is cleared during the return from
interrupt, the CPU can recognize the new interrupt request. Figure 8-2
shows the sequence of events caused by an interrupt.
Figure 8-1. IRQ Module Block Diagram
PIRQ
LEVEL-SENSITIVE TRIGGER
PA3
PA2
PA1
IRQ
PA0
VDD
(MOR LEVEL BIT)
RESET
IRQ VECTOR FETCH
EXTERNAL
INTERRUPT
REQUEST
(MOR)
TO BIH & BIL
INSTRUCTION
PROCESSING
IRQF
IRQR
IRQE
DQ
CK
IRQ
CLR
LATCH
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相關PDF資料
PDF描述
MC68HC705C9ACP IC MCU 2.1MHZ 16K OTP 40-DIP
MC68HC705C9ACFN IC MCU 2.1MHZ 16K OTP 44-PLCC
EHFWX2PKG CONN EEE1394 FMAL T/H CROSS BLK
EHFW2BXPKG CONN EEE1394 FMALE T/H BLK 4-40
P87C52X2FA,512 IC 80C51 MCU 8K OTP 44-PLCC
相關代理商/技術參數
參數描述
MC68HC705J1ACP 功能描述:IC MCU 4MHZ 1.2K OTP 20-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC05 其它有關文件:STM32F101T8 View All Specifications 特色產品:STM32 32-bit Cortex MCUs 標準包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C,IrDA,LIN,SPI,UART/USART 外圍設備:DMA,PDR,POR,PVD,PWM,溫度傳感器,WDT 輸入/輸出數:26 程序存儲器容量:64KB(64K x 8) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數據轉換器:A/D 10x12b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN,36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND
MC68HC705J1ACPE 功能描述:8位微控制器 -MCU HCO5 CORE+1.2K RAM + EPR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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
MC68HC705J2CDW 制造商:Motorola Inc 功能描述: 制造商:Motorola Inc 功能描述:MicroController, 8-Bit, 20 Pin, Plastic, SOP
MC68HC705J2DW 制造商:Motorola Inc 功能描述:
MC68HC705J5ACP 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述: