參數(shù)資料
型號： AT90USB647-MUR
廠商： Atmel
文件頁數(shù)： 92/106頁
文件大?。?/td> 0K
描述： MCU AVR 64K FLASH 16MHZ 64QFN
產品培訓模塊： MCU Product Line Introduction
megaAVR Introduction
標準包裝： 1
系列： AVR® 90USB
核心處理器： AVR
芯體尺寸： 8-位
速度： 16MHz
連通性： EBI/EMI，I²C，SPI，UART/USART，USB，USB OTG
外圍設備： 欠壓檢測/復位，POR，PWM，WDT
輸入/輸出數(shù)： 48
程序存儲器容量： 64KB（64K x 8）
程序存儲器類型： 閃存
EEPROM 大小： 2K x 8
RAM 容量： 4K x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 5.5 V
數(shù)據轉換器： A/D 8x10b
振蕩器型： 內部
工作溫度： -40°C ~ 85°C
封裝/外殼： 64-VFQFN 裸露焊盤
包裝： 剪切帶 (CT)
其它名稱： AT90USB647-MURCT
86
7593L–AVR–09/12
AT90USB64/128
11.3.6
Alternate functions of Port E
The Port E pins with alternate functions are shown in Table 11-15.
INT7/AIN.1/UVCON – Port E, bit 7
INT7, External Interrupt source 7: The PE7 pin can serve as an external interrupt source.
AIN1 – Analog Comparator Negative input. This pin is directly connected to the negative input of
the Analog Comparator.
UVCON - When using USB host mode, this pin allows to control an external VBUS generator
(active high).
INT6/AIN.0 – Port E, bit 6
INT6, External Interrupt source 6: The PE6 pin can serve as an external interrupt source.
AIN0 – Analog Comparator Negative input. This pin is directly connected to the negative input of
the Analog Comparator.
INT5/TOSC2 – Port E, bit 5
INT5, External Interrupt source 5: The PE5 pin can serve as an External Interrupt source.
TOSC2, Timer/Counter2 Oscillator pin1. When the AS2 bit in ASSR is set to enable asynchro-
nous clocking of Timer/Counter2, pin PE5 is disconnected from the port, and becomes the ouput
of the inverting Oscillator amplifier. In this mode, a crystal is connected to this pin, and the pin
can not be used as an I/O pin.
INT4/TOSC1 – Port E, bit 4
INT4, External Interrupt source 4: The PE4 pin can serve as an External Interrupt source.
TOSC1, Timer/Counter2 Oscillator pin2. When the AS2 bit in ASSR is set to enable asynchro-
nous clocking of Timer/Counter2, pin PE4 is disconnected from the port, and becomes the input
of the inverting Oscillator amplifier. In this mode, a crystal is connected to this pin, and the pin
can not be used as an I/O pin.
UID – Port E, bit 3
ID pin of the USB bus.
Table 11-15. Port E pins alternate functions.
Port pin
Alternate function
PE7
INT7/AIN.1/UVCON (External Interrupt 7 Input, Analog Comparator Positive Input
or VBUS Control)
PE6
INT6/AIN.0 (External Interrupt 6 Input or Analog Comparator Positive Input)
PE5
INT5/TOSC2 (External Interrupt 5 Input or RTC Oscillator Timer/Counter2))
PE4
INT4/TOSC2 (External Interrupt4 Input or RTC Oscillator Timer/Counter2)
PE3
UID
PE2
ALE/HWB (Address latch to extenal memory or Hardware bootloader activation)
PE1
RD (Read strobe to external memory)
PE0
WR (Write strobe to external memory)
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