参数资料
型号: AT90USB1287-MUR
厂商: Atmel
文件页数: 25/106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)
25
7593L–AVR–09/12
AT90USB64/128
6.3.2
EEARH and EEARL – The EEPROM Address Register
Bits 15..12 – Res: Reserved bits
These bits are reserved bits in the Atmel AT90USB64/128 and will always read as zero.
Bits 11..0 – EEAR8..0: EEPROM address
The EEPROM Address Registers – EEARH and EEARL specify the EEPROM address in the 4K
bytes EEPROM space. The EEPROM data bytes are addressed linearly between 0 and 4096.
The initial value of EEAR is undefined. A proper value must be written before the EEPROM may
be accessed.
6.3.3
EEDR – The EEPROM Data Register
Bits 7..0 – EEDR7.0: EEPROM data
For the EEPROM write operation, the EEDR Register contains the data to be written to the
EEPROM in the address given by the EEAR Register. For the EEPROM read operation, the
EEDR contains the data read out from the EEPROM at the address given by EEAR.
6.3.4
EECR – The EEPROM Control Register
Bits 7..6 – Res: Reserved bits
These bits are reserved bits in the AT90USB64/128 and will always read as zero.
Bits 5, 4 – EEPM1 and EEPM0: EEPROM Programming Mode bits
The EEPROM Programming Mode bit setting defines which programming action that will be trig-
gered when writing EEPE. It is possible to program data in one atomic operation (erase the old
value and program the new value) or to split the Erase and Write operations in two different
operations. The Programming times for the different modes are shown in Table 6-2 on page 26.
While EEPE is set, any write to EEPMn will be ignored. During reset, the EEPMn bits will be
reset to 0b00 unless the EEPROM is busy programming.
Bit
151413
1211
10
9
8
––––
EEAR11
EEAR10
EEAR9
EEAR8
EEARH
EEAR7
EEAR6
EEAR5
EEAR4
EEAR3
EEAR2
EEAR1
EEAR0
EEARL
7654
3
2
1
0
Read/write
RRRR
R/W
Initial value
0000
X
XXXX
X
Bit
7654
32
10
MSB
LSB
EEDR
Read/write
R/W
Initial value
0000
00
Bit
7654
32
10
EEPM1
EEPM0
EERIE
EEMPE
EEPE
EERE
EECR
Read/write
R
R/W
Initial value
0
X
0
X
0
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
VI-B3X-IX-F2 CONVERTER MOD DC/DC 5.2V 75W
VE-BTF-IW CONVERTER MOD DC/DC 72V 100W
VI-B3X-IW-F4 CONVERTER MOD DC/DC 5.2V 100W
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