參數(shù)資料
型號： AT90S1200-12PC
廠商： Atmel
文件頁數(shù)： 9/71頁
文件大?。?/td> 0K
描述： IC MCU 1K FLSH 12MHZ 20DIP
標準包裝： 18
系列： AVR® 90S
核心處理器： AVR
芯體尺寸： 8-位
速度： 12MHz
連通性： SPI
外圍設備： POR，WDT
輸入/輸出數(shù)： 15
程序存儲器容量： 1KB（512 x 16）
程序存儲器類型： 閃存
EEPROM 大?。?/td> 64 x 8
電壓 - 電源 (Vcc/Vdd)： 4 V ~ 6 V
振蕩器型： 內(nèi)部
工作溫度： 0°C ~ 70°C
封裝/外殼： 20-DIP（0.300"，7.62mm）
包裝： 管件
17
AT90S1200
0838H–AVR–03/02
External Interrupts
The External Interrupt is triggered by the INT0 pin. The interrupt can trigger on rising
edge, falling edge or low level. This is set up as described in the specification for the
MCU Control Register (MCUCR). When INT0 is level triggered, the interrupt is pending
as long as INT0 is held low.
The interrupt is triggered even if INT0 is configured as an output. This provides a way to
generate a software interrupt.
The interrupt flag can not be directly accessed by the user. If an external edge-triggered
interrupt is suspected to be pending, the flag can be cleared as follows.
1.
Disable the External Interrupt by clearing the INT0 flag in GIMSK.
2.
Select level triggered interrupt.
3.
Select desired interrupt edge.
4.
Re-enable the external interrupt by setting INT0 in GIMSK.
Interrupt Response Time
The interrupt execution response for all the enabled AVR interrupts is four clock cycles
minimum. Four clock cycles after the interrupt flag has been set, the program vector
address for the actual interrupt handling routine is executed. During this 4-clock-cycle
period, the Program Counter (9 bits) is pushed onto the Stack. The vector is normally a
relative jump to the interrupt routine, and this jump takes two clock cycles. If an interrupt
occurs during execution of a multi-cycle instruction, this instruction is completed before
the interrupt is served.
A return from an interrupt handling routine takes four clock cycles. During these four
clock cycles, the Program Counter (9 bits) is popped back from the Stack and the I-flag
in SREG is set. When the AVR exits from an interrupt, it will always return to the main
program and execute one more instruction before any pending interrupt is served.
Note that the Subroutine and Interrupt Stack is a 3-level true hardware stack, and if
more than three nested subroutines and interrupts are executed, only the most recent
three return addresses are stored.
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相關代理商/技術參數(shù)
參數(shù)描述
AT90S1200-12PI 功能描述:IC MCU 1K FLSH 12MHZ IT 20DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:AVR® 90S 標準包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設備:POR，WDT 輸入/輸出數(shù):32 程序存儲器容量:32KB（32K x 8） 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP（0.600"，15.24mm） 包裝:管件
AT90S1200-12SC 功能描述:8位微控制器 -MCU 1K Flash 5V 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
AT90S1200-12SI 功能描述:8位微控制器 -MCU 1k bit 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
AT90S1200-12YC 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 1K Byte of In-System Programmable Flash
AT90S1200-12YI 功能描述:8位微控制器 -MCU 1K Flash 3V 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
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