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ATMEGA32U4RC-MUR 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 16K FL 16MHz Ind Temp Grn
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P3P5P62P138P139P142P144P147Hot
典型应用电路图在P240
原理图在P4P9P60P85P86P87P89P102P107P108P110P111
型号编码规则在P395P396P403
封装信息在P397
技术参数、封装参数在P358
应用领域在P37P46P58P59P314P317P329P330P412
电气规格在P60P239P358P403
导航目录
ATMEGA32U4RC-MUR数据手册
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5
ATmega16U4_32U4 [DATASHEET]
Atmel-7766H-USB-ATmega16U4_32U4-Datasheet_092014
programming and six software selectable power saving modes. The Idle mode stops the CPU while allowing the
SRAM, Timer/Counters, SPI port, and interrupt system to continue functioning. The Power-down mode saves
the register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt or
Hardware Reset. The ADC Noise Reduction mode stops the CPU and all I/O modules except ADC, to minimize
switching noise during ADC conversions. In Standby mode, the Crystal/Resonator Oscillator is running while the
rest of the device is sleeping. This allows very fast start-up combined with low power consumption.
The device is manufactured using the Atmel
®
high-density nonvolatile memory technology. The On-chip ISP
Flash allows the program memory to be reprogrammed in-system through an SPI serial interface, by a
conventional nonvolatile memory programmer, or by an On-chip Boot program running on the AVR core. The
boot program can use any interface to download the application program in the application Flash memory.
Software in the Boot Flash section will continue to run while the Application Flash section is updated, providing
true Read-While-Write operation. By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on
a monolithic chip, the Atmel ATmega16U4/ATmega32U4 is a powerful microcontroller that provides a highly
flexible and cost effective solution to many embedded control applications.
The ATmega16U4/ATmega32U4 AVR is supported with a full suite of program and system development tools
including: C compilers, macro assemblers, program debugger/simulators, in-circuit emulators, and evaluation
kits.
2.2 Pin Descriptions
2.2.1 VCC
Digital supply voltage.
2.2.2 GND
Ground.
2.2.3 Port B (PB7..PB0)
Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port B output
buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port B pins
that are externally pulled low will source current if the pull-up resistors are activated. The Port B pins are tri-
stated when a reset condition becomes active, even if the clock is not running.
Port B has better driving capabilities than the other ports.
Port B also serves the functions of various special features of the ATmega16U4/ATmega32U4 as listed on
page 67.
2.2.4 Port C (PC7,PC6)
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.
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 70.
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
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