參數(shù)資料
型號： ATTINY44A-MU
廠商： Atmel
文件頁數(shù)： 129/135頁
文件大?。?/td> 0K
描述： IC MCU AVR 4K FLASH 20MHZ 20QFN
產(chǎn)品培訓模塊： MCU Product Line Introduction
tinyAVR Introduction
標準包裝： 490
系列： AVR® ATtiny
核心處理器： AVR
芯體尺寸： 8-位
速度： 20MHz
連通性： USI
外圍設備： 欠壓檢測/復位，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?。?/td> 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-WFQFN 裸露焊盤
包裝： 托盤
產(chǎn)品目錄頁面： 613 (CN2011-ZH PDF)
配用： ATSTK600-ND - DEV KIT FOR AVR/AVR32
ATAVRISP2-ND - PROGRAMMER AVR IN SYSTEM
93
32015G–AVR32–09/09
AT32AP7001
11.4
Product Dependencies
11.4.1
I/O Lines
The PM provides a number of generic clock outputs, which can be connected to output pins,
multiplexed with PIO lines. The programmer must first program the PIO controller to assign
these pins to their peripheral function. If the I/O pins of the PM are not used by the application,
they can be used for other purposes by the PIO controller.
The PM also has a dedicated WAKE_N pin, as well as a number of pins for oscillators and
PLL’s, which do not require the PIO controller to be programmed.
11.4.2
Interrupt
The PM interrupt line is connected to one of the internal sources of the interrupt controller. Using
the PM interrupt requires the interrupt controller to be programmed first.
11.5
Functional Description
11.5.1
Oscillator 0 and 1 operation
The two main oscillators are designed to be used with an external high frequency crystal, as
shown in Figure 11-1. See Electrical Characteristics for the allowed frequency range. The main
oscillators are enabled by default after reset, and are only switched off in sleep modes, as
described in Section 11.5.6 on page 99. After a power-on reset, or when waking up from a sleep
mode that disabled the main oscillators, the oscillators need 128 slow clock cycles to stabilize on
the correct frequency. (1) The PM masks the main oscillator outputs during this start-up period, to
ensure that no unstable clocks propagate to the digital logic.
The oscillators can be bypassed by pulling the OSCEN_N pin high. This disables the oscillators,
and an external clock must be applied on XIN. No start-up time applies to this clock.
Figure 11-1. Oscillator connections
11.5.2
32 KHz oscillator operation
The 32 KHz oscillator operates similarly to Oscillator 0 and 1 described above, and is used to
generate the slow clock in the device. A 32768 Hz crystal must be connected between XIN32
and XOUT32 as shown in Figure 11-1. The 32 KHz oscillator is is an ultra-low power design, and
remains enabled in all sleep modes except static mode, as described in Section 11.5.6 on page
1. When waking up from Stop mode using external interrupts, the startup time is 32768 slow clock
cycles.
XIN
XO U T
C 2
C 1
T y p. v a lues: C 2 = C 2 = 22 pF
相關PDF資料
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相關代理商/技術參數(shù)
參數(shù)描述
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 安裝風格:SMD/SMT
ATTINY44A-SSFR 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 安裝風格:SMD/SMT
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