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鍙冩暩(sh霉)璩囨枡
鍨嬭櫉(h脿o)锛� ATUC128D4-AUR
寤犲晢锛� Atmel
鏂囦欢闋�(y猫)鏁�(sh霉)锛� 89/755闋�(y猫)
鏂囦欢澶у皬锛� 0K
鎻忚堪锛� IC MCU 32BIT 128KB FLASH 48TQFP
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 2,500
绯诲垪锛� AVR®32 UC3 D
鏍稿績铏曠悊鍣細 AVR
鑺珨灏哄锛� 32-浣�
閫熷害锛� 48MHz
閫i€氭€э細 I²C锛孲PI锛孶ART/USART锛孶SB
澶栧湇瑷�(sh猫)鍌欙細 娆犲妾㈡脯(c猫)/寰�(f霉)浣嶏紝DMA锛孖²S锛孭OR锛孭WM锛學DT
杓稿叆/杓稿嚭鏁�(sh霉)锛� 35
绋嬪簭瀛樺劜(ch菙)鍣ㄥ閲忥細 128KB锛�128K x 8锛�
绋嬪簭瀛樺劜(ch菙)鍣ㄩ鍨嬶細 闁冨瓨
RAM 瀹归噺锛� 16K x 8
闆诲 - 闆绘簮 (Vcc/Vdd)锛� 1.65 V ~ 3.6 V
鏁�(sh霉)鎿�(j霉)杞�(zhu菐n)鎻涘櫒锛� A/D 6x10b
鎸暕鍣ㄥ瀷锛� 鍏�(n猫i)閮�
宸ヤ綔婧害锛� -40°C ~ 85°C
灏佽/澶栨锛� 48-TQFP
鍖呰锛� 甯跺嵎 (TR)
鍏跺畠鍚嶇ū锛� ATUC128D4-AUR-ND
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179
32133D鈥�11/2011
UC3D
14. Asynchronous Timer (AST)
Rev: 3.1.0.1
14.1 Features
32-bit counter with 32-bit prescaler
Clocked Source
鈥� System RC oscillator (RCSYS)
鈥� 32KHz crystal oscillator (OSC32K)
鈥揚B clock
鈥� Generic clock (GCLK)
Optional calendar mode supported
Periodic interrupt(s) supported
Alarm interrupt(s) supported
鈥� Optional clear on alarm
14.2 Overview
The Asynchronous Timer (AST) enables periodic interrupts, as well as interrupts at a specified
time in the future. The AST consists of a 32-bit prescaler which feeds a 32-bit up-counter. The
prescaler can be clocked from five different clock sources, including the low-power 32KHz oscil-
lator, which allows the AST to be used as a real-time timer with a maximum timeout of more than
100 years. Also, the PB clock or a generic clock can be used for high-speed operation, allowing
the AST to be used as a general timer.
The AST can generate periodic interrupts from output from the prescaler, as well as alarm inter-
rupts, which can trigger at any counter value. Additionally, the timer can trigger an overflow
interrupt, and be reset on the occurrence of any alarm. This allows periodic interrupts at very
long and accurate intervals.
The AST has been designed to meet the system tick and Real Time Clock requirements of most
embedded operating systems.
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
VI-B72-IW-F2 CONVERTER MOD DC/DC 15V 100W
V24C12H150B2 CONVERTER MOD DC/DC 12V 150W
VI-B71-IX-F3 CONVERTER MOD DC/DC 12V 75W
VI-B71-IX-F2 CONVERTER MOD DC/DC 12V 75W
VI-B71-IX-F1 CONVERTER MOD DC/DC 12V 75W
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鍙冩暩(sh霉)鎻忚堪
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