參數(shù)資料
型號： MC68HC705JJ7CDW
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20
封裝： SOIC-20
文件頁數(shù)： 97/164頁
文件大?。?/td> 1165K
代理商： MC68HC705JJ7CDW
Interrupts
MC68HC705JJ7 MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
38
Freescale Semiconductor
With the edge-sensitive only trigger MOR option, a rising edge on a PA0:3 pin latches an external interrupt
request. A subsequent external interrupt request can be latched only after the voltage level of the previous
interrupt signal returns to a logic 0 and then rises again to a logic 1.
NOTE
If the port A pins are enabled as external interrupts, then a high level on any
PA0:3 pin will drive the state of the IRQ function such that the IRQ/VPP pin
and other PA0:3 pins are to be ignored until ALL of the PA0:3 pins have
returned to a low level. Similarly, if the IRQ/VPP pin is at a low level, the
PA0:3 pins will be ignored until the IRQ/VPP pin returns to a high state.
4.5.3 IRQ Status and Control Register (ISCR)
The IRQ status and control register (ISCR), shown in Figure 4-4, contains an external interrupt mask
(IRQE), an external interrupt flag (IRQF), and a flag reset bit (IRQR). Unused bits will read as logic 0s.
The ISCR also contains two control bits for the oscillators, external pin oscillator, and internal low-power
oscillator. Reset sets the IRQE and OM2 bits and clears all the other bits.
IRQE — External Interrupt Request Enable Bit
This read/write bit enables external interrupts. Reset sets the IRQE bit.
1 = External interrupt processing enabled
0 = External interrupt processing disabled
OM1 and OM2 — Oscillator Select Bits
These bits control the selection and enabling of the oscillator source for the MCU. One choice is the
internal low-power oscillator (LPO). The other choice is the external pin oscillator (EPO) which is
common to most M68HC05 MCU devices. The EPO uses external components like filter capacitors
and a crystal or ceramic resonator and consumes more power. The selection and enable conditions
for these two oscillators are shown in Table 4-2.
Address:
$000D
Bit 7
654321
Bit 0
Read:
IRQE
OM2
OM1
0
IRQF
000
Write:
R
IRQR
Reset:
110000
U
0
= Unimplemented
R
= Reserved
U = Unaffected
Figure 4-4. IRQ Status and Control Register (ISCR)
Table 4-2. Oscillator Selection
OM2
OM1
Oscillator
Selected
by CPU
Internal
Low-Power
Oscillator
(LPO)
External Pin
Oscillator
(EPO)
Power
Consumption
0
Internal
Enabled
Disabled
Lowest
0
1
External
Disabled
Enabled
Normal
1
0
Internal
Enabled
Disabled
Lowest
1
Internal
Enabled
Normal
相關PDF資料
PDF描述
MC68HC705JJ7CP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP20
MC68HC705JJ7S 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER, CDIP20
MC68HC705K1DWR2 8-BIT, OTPROM, MICROCONTROLLER, PDSO16
MC68HC705K1CP 8-BIT, OTPROM, MICROCONTROLLER, PDIP16
MC68HC705K1P 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDIP16
相關代理商/技術參數(shù)
參數(shù)描述
MC68HC705JP7CDW 功能描述:IC MCU 8BIT 28-SOIC 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(chǎn)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(shù):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(shù)據(jù)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
MC68HC705JP7CP 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述:
MC68HC705K1CDW 制造商:Motorola Inc 功能描述:
MC68HC705KJ1CDW 功能描述:8位微控制器 -MCU 8 Bit 4MHz 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT
MC68HC705KJ1CP 功能描述:IC MCU 4MHZ 1.2K OTP 16-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(chǎn)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(shù):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(shù)據(jù)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
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