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ATMEGA32U4-MU 用户编程技术手册 - Microchip(微芯)
制造商:
Microchip(微芯)
分类:
微控制器
封装:
QFN-44
描述:
8位微控制器 -MCU AVR USB 32K FLASH INDUSTRIAL
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P3P5P67P146P147P151P152P155P156Hot
典型应用电路图在P254
原理图在P4P9P65P91P92P94P95P109P114P115P117P119
型号编码规则在P415P416P424
封装信息在P417
应用领域在P38P49P62P63P330P334P346P347P433
电气规格在P253
导航目录
ATMEGA32U4-MU数据手册
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6
7766G–AVR–02/2014
ATmega16/32U4
Only bits 6 and 7 are present on the product pinout.
Port C also serves the functions of special features of the ATmega16U4/ATmega32U4 as listed
on page 75.
2.2.5 Port D (PD7..PD0)
Port D is an 8-bit bi-directional I/O port with 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.
Port D also serves the functions of various special features of the ATmega16U4/ATmega32U4
as listed on page 77.
2.2.6 Port E (PE6,PE2)
Port E is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The
Port E output buffers have symmetrical drive characteristics with both high sink and source
capability. As inputs, Port E pins that are externally pulled low will source current if the pull-up
resistors are activated. The Port E pins are tri-stated when a reset condition becomes active,
even if the clock is not running.
Only bits 2 and 6 are present on the product pinout.
Port E also serves the functions of various special features of the ATmega16U4/ATmega32U4
as listed on page 80.
2.2.7 Port F (PF7..PF4, PF1,PF0)
Port F serves as analog inputs to the A/D Converter.
Port F also serves as an 8-bit bi-directional I/O port, if the A/D Converter channels are not used.
Port pins can provide internal pull-up resistors (selected for each bit). The Port F output buffers
have symmetrical drive characteristics with both high sink and source capability. As inputs, Port
F pins that are externally pulled low will source current if the pull-up resistors are activated. The
Port F pins are tri-stated when a reset condition becomes active, even if the clock is not running.
Bits 2 and 3 are not present on the product pinout.
Port F also serves the functions of the JTAG interface. If the JTAG interface is enabled, the pull-
up resistors on pins PF7(TDI), PF5(TMS), and PF4(TCK) will be activated even if a reset occurs.
2.2.8 D-
USB Full speed / Low Speed Negative Data Upstream Port. Should be connected to the USB D-
connector pin with a serial 22 Ohms resistor.
2.2.9 D+
USB Full speed / Low Speed Positive Data Upstream Port. Should be connected to the USB D+
connector pin with a serial 22 Ohms resistor.
2.2.10 UGND
USB Pads Ground.
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