参数资料
型号: AT90USB1287-MUR
厂商: Atmel
文件页数: 46/106页
文件大小: 0K
描述: MCU AVR 128K FLASH 16MHZ 64QFN
产品培训模块: MCU Product Line Introduction
megaAVR Introduction
标准包装: 1,000
系列: AVR® 90USB
核心处理器: AVR
芯体尺寸: 8-位
速度: 16MHz
连通性: EBI/EMI,I²C,SPI,UART/USART,USB,USB OTG
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 48
程序存储器容量: 128KB(128K x 8)
程序存储器类型: 闪存
EEPROM 大小: 4K x 8
RAM 容量: 8K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 64-VFQFN 裸露焊盘
包装: 带卷 (TR)
44
7593L–AVR–09/12
AT90USB64/128
Notes:
1. These options should only be used when not operating close to the maximum frequency of the
device, and only if frequency stability at start-up is not important for the application. These
options are not suitable for crystals.
2. These options are intended for use with ceramic resonators and will ensure frequency stability
at start-up. They can also be used with crystals when not operating close to the maximum fre-
quency of the device, and if frequency stability at start-up is not important for the application.
Note:
1.
The device is shipped with this option selected.
7.4
Low frequency crystal oscillator
The device can utilize a 32.768kHz watch crystal as clock source by a dedicated low frequency
crystal oscillator. The crystal should be connected as shown in Figure 7-2 on page 43. When this
Oscillator is selected, start-up times are determined by the SUT Fuses and CKSEL0 as shown in
Crystal Oscillator, BOD
enabled
16KCK
14CK
1
01
Crystal Oscillator, fast
rising power
16KCK
14CK + 4.1ms
1
10
Crystal Oscillator, slowly
rising power
16KCK
14CK + 65ms
1
11
Table 7-5.
Start-up times for the internal calibrated RC oscillator clock selection.
Power conditions
Start-up time from power-
down and power-save
Additional delay from
reset (V
CC = 5.0V)
SUT1..0
BOD enabled
6CK
14CK
00
Fast rising power
6CK
14CK + 4.1ms
01
Slowly rising power
6CK
14CK + 65ms (1)
10
Reserved
11
Table 7-4.
Start-up times for the low power crystal oscillator clock selection. (Continued)
Oscillator source /
power conditions
Start-up time from
power-down and
power-save
Additional delay
from reset
(V
CC = 5.0V)
CKSEL0
SUT1..0
Table 7-6.
Start-up times for the low frequency crystal oscillator clock selection.
Power conditions
Start-up time from
power-down and
power-save
Additional delay
from reset
(V
CC = 5.0V)
CKSEL0
SUT1..0
BOD enabled
1KCK
14CK (1)
000
Fast rising power
1KCK
14CK + 4.1ms (1)
001
Slowly rising power
1KCK
14CK + 65ms (1)
010
Reserved
0
11
BOD enabled
32KCK
14CK
1
00
Fast rising power
32KCK
14CK + 4.1ms
1
01
Slowly rising power
32KCK
14CK + 65ms
1
10
Reserved
1
11
相关PDF资料
PDF描述
AT90USB1287-AUR MCU AVR 128K FLASH 16MHZ 64TQFP
VE-BTF-IX CONVERTER MOD DC/DC 72V 75W
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