參數(shù)資料
型號： ATTINY44A-MMHR
廠商： Atmel
文件頁數(shù)： 13/135頁
文件大?。?/td> 0K
描述： MCU AVR 4KB FLASH 20MHZ 20QFN
產(chǎn)品培訓(xùn)模塊： MCU Product Line Introduction
tinyAVR Introduction
標(biāo)準(zhǔn)包裝： 1
系列： AVR® ATtiny
核心處理器： AVR
芯體尺寸： 8-位
速度： 20MHz
連通性： USI
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，溫度傳感器，WDT
輸入/輸出數(shù)： 12
程序存儲器容量： 4KB（2K x 16）
程序存儲器類型： 閃存
EEPROM 大小： 256 x 8
RAM 容量： 256 x 8
電壓 - 電源 (Vcc/Vdd)： 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 20-VFQFN 裸露焊盤
包裝： 標(biāo)準(zhǔn)包裝
其它名稱： ATTINY44A-MMHRDKR
11
8183F–AVR–06/12
ATtiny24A/44A/84A
Figure 4-4.
The Parallel Instruction Fetches and Instruction Executions
Figure 4-5 shows the internal timing concept for the Register File. In a single clock cycle an ALU
operation using two register operands is executed, and the result is stored back to the destina-
tion register.
Figure 4-5.
Single Cycle ALU Operation
4.7
Reset and Interrupt Handling
The AVR provides several different interrupt sources. These interrupts and the separate Reset
Vector each have a separate Program Vector in the Program memory space. All interrupts are
assigned individual enable bits which must be written logic one together with the Global Interrupt
Enable bit in the Status Register in order to enable the interrupt.
The lowest addresses in the Program memory space are by default defined as the Reset and
Interrupt Vectors. The complete list of vectors is shown in “Interrupts” on page 47. The list also
determines the priority levels of the different interrupts. The lower the address the higher is the
priority level. RESET has the highest priority, and next is INT0 – the External Interrupt
Request 0.
When an interrupt occurs, the Global Interrupt Enable I-bit is cleared and all interrupts are dis-
abled. The user software can write logic one to the I-bit to enable nested interrupts. All enabled
interrupts can then interrupt the current interrupt routine. The I-bit is automatically set when a
Return from Interrupt instruction – RETI – is executed.
There are basically two types of interrupts. The first type is triggered by an event that sets the
Interrupt Flag. For these interrupts, the Program Counter is vectored to the actual Interrupt Vec-
tor in order to execute the interrupt handling routine, and hardware clears the corresponding
Interrupt Flag. Interrupt Flags can also be cleared by writing a logic one to the flag bit position(s)
clk
1st Instruction Fetch
1st Instruction Execute
2nd Instruction Fetch
2nd Instruction Execute
3rd Instruction Fetch
3rd Instruction Execute
4th Instruction Fetch
T1
T2
T3
T4
CPU
Total Execution Time
Register Operands Fetch
ALU Operation Execute
Result Write Back
T1
T2
T3
T4
clk
CPU
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參數(shù)描述
ATTINY44A-MU 功能描述:8位微控制器 -MCU 1.8V, 20MHz Industrial Temp 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
ATTINY44A-MU SL383 制造商:Atmel Corporation 功能描述:MCU 8-bit ATtiny AVR RISC 4KB Flash 2.5V/3.3V/5V 20-Pin MLF EP T/R
ATTINY44A-MUR 功能描述:8位微控制器 -MCU 4KB FLSH 256B EE256B SRAM-20MHz, IND, 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
ATTINY44A-PU 功能描述:8位微控制器 -MCU 1.8V, 20MHz Industrial Temp 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
ATTINY44A-SSF 功能描述:8位微控制器 -MCU 4KB FL 256B EE 256B SRAM 20MHz Hi +125C 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
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