參數(shù)資料
型號(hào)： AT90USB647-MU
廠商： Atmel
文件頁(yè)數(shù)： 43/106頁(yè)
文件大?。?/td> 0K
描述： IC AVR MCU 64K 64QFN
產(chǎn)品培訓(xùn)模塊： megaAVR Introduction
標(biāo)準(zhǔn)包裝： 1,300
系列： AVR®
應(yīng)用： USB 微控制器
核心處理器： AVR
程序存儲(chǔ)器類(lèi)型： 閃存（64 kB）
控制器系列： AT90 USB
RAM 容量： 4K x 8
接口： 2 線串行，SPI 串行，USART，USB
輸入/輸出數(shù)： 48
電源電壓： 2.7 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 64-VFQFN 裸露焊盤(pán)
包裝： 托盤(pán)
供應(yīng)商設(shè)備封裝： 64-VQFN（9x9）
配用： ATSTK600-TQFP64-ND - STK600 SOCKET/ADAPTER 64-TQFP
ATSTK525-ND - KIT STARTER FOR AT90USB
AT90USBKEY2-ND - KIT DEMO FOR AT90USB
其它名稱： AT90USB647-16MU
AT90USB647-16MU-ND
Q4939729A
41
7593L–AVR–09/12
AT90USB64/128
7.1.4
Asynchronous Timer Clock – clk
ASY
The Asynchronous Timer clock allows the Asynchronous Timer/Counter to be clocked directly
from an external clock or an external 32kHz clock crystal. The dedicated clock domain allows
using this Timer/Counter as a real-time counter even when the device is in sleep mode.
7.1.5
ADC Clock – clk
ADC
The ADC is provided with a dedicated clock domain. This allows halting the CPU and I/O clocks
in order to reduce noise generated by digital circuitry. This gives more accurate ADC conversion
results.
7.1.6
USB Clock – clk
USB
The USB is provided with a dedicated clock domain. This clock is generated with an on-chip PLL
running at 48MHz. The PLL always multiply its input frequency by 24. Thus the PLL clock regis-
ter should be programmed by software to generate a 2MHz clock on the PLL input.
7.2
Clock sources
The device has the following clock source options, selectable by Flash Fuse bits as shown
below. The clock from the selected source is input to the AVR clock generator, and routed to the
appropriate modules.
Note:
1. For all fuses “1” means unprogrammed while “0” means programmed.
7.2.1
Default clock source
The device is shipped with Low Power Crystal Oscillator (8.0MHz-max) enabled and with the
fuse CKDIV8 programmed, resulting in 1.0MHz system clock (with a 8MHz crystal). The default
fuse configuration is CKSEL = "1110", SUT = "01", CKDIV8 = "0". This default setting ensures
that all users can make their desired clock source setting using any available programming
interface.
7.2.2
Clock startup sequence
Any clock source needs a sufficient V
CC to start oscillating and a minimum number of oscillating
cycles before it can be considered stable.
To ensure sufficient V
CC, the device issues an internal reset with a time-out delay (tTOUT) after
the device reset is released by all other reset sources. “On-chip debug system” on page 56
describes the start conditions for the internal reset. The delay (t
TOUT) is timed from the Watchdog
Oscillator and the number of cycles in the delay is set by the SUTx and CKSELx fuse bits. The
selectable delays are shown in Table 7-2. The frequency of the Watchdog Oscillator is voltage
Table 7-1.
Device clocking options select
Device clocking option
CKSEL3..0
Low power crystal oscillator
1111 - 1000
Reserved
0111 - 0110
Low frequency crystal oscillator
0101 - 0100
Reserved
0011
Calibrated internal RC oscillator
0010
External clock
0000
Reserved
0001
相關(guān)PDF資料
PDF描述
395-020-527-801 CARD EDGE 20POS DL .100X.200 BLK
395-020-527-204 CARD EDGE 20POS DL .100X.200 BLK
FT24C02A-UNR-T IC EEPROM 2KBIT 1MHZ 8DFN
AYF332365 CONN FPC 23POS SMD Y3BW
AT90USB647-AU IC AVR MCU 64K 64TQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT90USB647-MUR 功能描述:8位微控制器 -MCU USB 64K FLASH 16 MHz 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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
AT90USB64X 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:USB DFU Bootloader
AT90USB82 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 8/16K Bytes of ISP Flash and USB Controller
AT90USB82_0811 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 8/16K Bytes of ISP Flash and USB Controller
AT90USB82-16MU 功能描述:8位微控制器 -MCU AVR USB 8K FLASH 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*