參數(shù)資料
型號： MC705JP7CPE
廠商： Freescale Semiconductor
文件頁數(shù)： 96/164頁
文件大?。?/td> 0K
描述： IC MCU 8BIT 224 BYTES RAM 28PDIP
標(biāo)準(zhǔn)包裝： 13
系列： HC05
核心處理器： HC05
芯體尺寸： 8-位
速度： 2.1MHz
連通性： SIO
外圍設(shè)備： POR，溫度傳感器，WDT
輸入/輸出數(shù)： 22
程序存儲器容量： 6KB（6K x 8）
程序存儲器類型： OTP
RAM 容量： 224 x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 4x12b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 28-DIP（0.600"，15.24mm）
包裝： 管件
External Interrupts
MC68HC705JJ7 MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
Freescale Semiconductor
37
Figure 4-3. External Interrupt Logic
4.5.2 PA0–PA3 Pins
Programming the PIRQ bit in the MOR to a logic 1 enables the PA0–PA3 pins (PA0:3) to serve as
additional external interrupt sources. A rising edge on a PA0:3 pin latches an external interrupt request.
After completing the 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 ISCR. If the I bit is clear and the IRQE
bit is set, the CPU then begins the interrupt sequence. 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.
The PA0:3 pins can be edge-triggered or edge- and level-triggered. External interrupt triggering sensitivity
is selected by the LEVEL bit in the MOR.
With the edge- and level-sensitive trigger MOR option, a rising edge or a high level on a PA0:3 pin latches
an external interrupt request. The edge- and level-sensitive trigger MOR option allows connection to a
PA0:3 pin of multiple wired-OR interrupt sources. As long as any source is holding the pin high, an
external interrupt request is present, and the CPU continues to execute the interrupt service routine.
PA3
PA2
PA1
PA0
IRQ
LATCH
VDD
RST
IRQ VECTOR FETCH
IRQ STATUS/CONTROL REGISTER ($000D)
EXTERNAL
INTERRUPT
REQUEST
IR
QE
IR
QF
IR
QR
INTERNAL DATA BUS
TO BIH & BIL
INSTRUCTION
PROCESSING
R
PIRQ
LEVEL
VPP TO
USER EPROM
AND PEPROM
MASK OPTION REGISTER ($1FF1)
IRQ/VPP
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC705JP7CPE 制造商:Freescale Semiconductor 功能描述:IC 8BIT MCU 68HC05 2.1MHZ DIP-28
MC705K1CP 制造商:Motorola Inc 功能描述:16 PIN DIP INTEGRATED CIRCUIT
MC705L16CFUE 功能描述:8位微控制器 -MCU 8B MCU W/ EPROM 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(fēng)格:SMD/SMT
MC705P6ACDWE 功能描述:8位微控制器 -MCU MCU 176 BYTES RAM A/D 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(fēng)格:SMD/SMT
MC705P6ACDWE 制造商:Freescale Semiconductor 功能描述:8-Bit Microcontroller IC
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