6
7707F–AVR–11/10
AT90USB82/162
2.2.4
Port C (PC7..PC0)
Port C is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The
Port C output buffers have symmetrical drive characteristics with both high sink and source
capability. As inputs, Port C pins that are externally pulled low will source current if the pull-up
resistors are activated. The Port C pins are tri-stated when a reset condition becomes active,
even if the clock is not running.
Port C also serves the functions of various special features of the AT90USB82/162 as listed on
2.2.5
Port D (PD7..PD0)
Port D serves as analog inputs to the analog comparator.
Port D also serves as an 8-bit bi-directional I/O port, if the analog comparator is not used (con-
cerns PD2/PD1 pins). Port pins can provide internal pull-up resistors (selected for each bit). The
Port D output buffers have symmetrical drive characteristics with both high sink and source
capability. As inputs, Port D pins that are externally pulled low will source current if the pull-up
resistors are activated. The Port D pins are tri-stated when a reset condition becomes active,
even if the clock is not running.
2.2.6
D-/SDATA
USB Full Speed Negative Data Upstream Port / Data port for PS/2
2.2.7
D+/SCK
USB Full Speed Positive Data Upstream Port / Clock port for PS/2
2.2.8
UGND
USB Ground.
2.2.9
UVCC
USB Pads Internal Regulator Input supply voltage.
2.2.10
UCAP
USB Pads Internal Regulator Output supply voltage. Should be connected to an external capac-
itor (1F).
2.2.11
RESET/PC1/dW
Reset input. A low level on this pin for longer than the minimum pulse length will generate a
reset, even if the clock is not running. The minimum pulse length is given in Section 9.. Shorter
pulses are not guaranteed to generate a reset. This pin alternatively serves as debugWire chan-
nel or as generic I/O. The configuration depends on the fuses RSTDISBL and DWEN.
2.2.12
XTAL1
Input to the inverting Oscillator amplifier and input to the internal clock operating circuit.
2.2.13
XTAL2/PC0
Output from the inverting Oscillator amplifier if enabled by Fuse. Also serves as a generic I/O.
相關(guān)PDF資料
PDF描述
AT91FR40162SB-CU-999 IC MCU 32BIT RISC 121BGA
AT91M40800-33AI SL383 IC ARM MCU 16BIT 100TQFP
AT91M42800A-33CJ IC ARM7 MCU 144 BGA
AT91M55800A-33AU IC ARM MCU 33MHZ 176-LQFP
AT91R40008-66AU IC ARM7 MCU 100 LQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT90USB162-16MU 功能描述:8位微控制器 -MCU AVR USB 16K 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT
AT90USB162-16MUR 功能描述:8位微控制器 -MCU 16K 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT
AT90USB646 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
AT90USB646_0607 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
AT90USB646_08 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 64/128K Bytes of ISP Flash and USB Controller