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seeedduino Lite v0.91b

3 years ago 1173
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Description

Seeeduino Lite

enter image description here

Seeeduino Lite shares many similarities with Arduino Leonardo.

It is a microcontroller board based on Atmega32U4 chip.

The chip has about the same amount of flash, RAM and capability as the ATmega328 found in the Seeeduino.

It has 20 digital I/Os (7 of which can output PWM),a micro USB connection, a power jack, an ICSP header, and a reset button. .

It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter to get started.

Seeeduino Lite differs from all Arduino boards in that the voltage select switch affects the I/O output voltage, high level of I/O output is consistent with voltage switch.

And there are I2C Interfaces、UART Interfaces and Grove Interfaces provide convenience for connecting Grove modules.

In addition, Like Arduino Leonardo,The Seeeduino Lite can appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port.

Features Each of the 20 digital i/o pins on the Seeeduino Lite can be used a Micro USB to provide power and data to the board and a extern DC power jack can connecte grove module conveniently Can select I/Ooutput Voltage(3.3V or 5V)

IIC and SPI jumper

From:For more detail, please visit: http://www.seeedstudio.com/item_detail.html?p_id=1487?cPath=6_7

Introduction

Seeeduino Lite is a microcontroller based on ATmega32U4. Just like Arduino Leonardo, it saves a secondary processor needed for USB to serial communication.

And this allows Seeeduino Lite appear to computer as a USB device, like keyboard and mouse.

Derived from Leonardo, we also merged custom details of Seeeduino series into Seeeduino Lite, like selectable operating voltage, onboard Grove connectors and so on.

It has 20 digital I/Os (7 of which can output PWM),a micro USB connection, a power jack, an ICSP header, and a reset button.

It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter to get started.

enter image description here

Specifications

Microcontroller: ATmega32u4

Operating Voltage: 5V

Input Voltage (recommended): 7-12V

Input Voltage (limits): 6-20V

Digital I/O Pins: 20

PWM Channels: 7

Analog Input Channels: 12

DC Current per I/O Pin: 40 mA

DC Current for 3.3V Pin: 50 mA

Flash Memory: 32 KB (ATmega32u4) of which 4 KB used by bootloader

SRAM: 2.5 KB (ATmega32u4)

EEPROM: 1 KB (ATmega32u4)

Clock Speed: 16 MHz

Interface enter image description here

U1: 78M05 IC, Three-terminal positive voltage regulator.

U3: LD1117 IC, a Low Drop Voltage Regulator able to provide up to 800mA of Output Current.

U5: Atmega32U4 IC, 8-bit AVR Microcontroller with 32K Bytes of ISP Flash and USB Controller.

From: http://www.seeedstudio.com/wiki/Seeeduino_Lite

Documents

seeedduino Lite v0.91b

seeeduino Lite v0.91b

BOM

ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted
1 22R R1,R3 R0603 2
2 1uF C1 C0805 1
3 2.54-2x3p male ICSP 2X3P-2.54 1
4 2.54-6p female J6 6P-2.54-6535MIL 1
5 2.54-8p female J9 8P-2.54-6535MIL 1
6 2.54-8p female J10 10P-2.54 1
7 DNP J8 10P-2.54 1
8 DNP J7,J3 8P-2.54-6535MIL 2
9 DNP J4 6P-2.54-6535MIL 1
10 SWITCH-2CH-6P-2.54 SW2 6P-2CH-2.5-9.1X3.5X3.2H 1
11 DC-044-AH J1 DC-404 1
12 10uF C2,C17 C0805 2
13 PPTC-500mA F1 F1206 1
14 Si2305Ds Q1 SOT23 1
15 M7 D2 D2010 1
16 25v_47uF C3 ELECTRO-SMD-C-6MM 1
17 16MHz X2 2P-SMD-5X3.2 1
18 8.2pF C6,C8 C0603 2
19 1k R12,R13,R2,R4,R8 R0603 5
20 RED RST LED-0603 1
21 GREEN PWR,TX,RX,L LED-0603 4
22 10k R14 R0603 1
23 100nF C9,C14,C4,C12,C13,C15,C16,C11 C0603 8
24 4P-LEADED-2.0 SERIAL,I2C 4P-LEADED-2.0 2
25 2.54-6p female J5 8P-2.54-6535MIL 1
26 ATMEGA32U4 U5 TQFP44 1
27 DNP SCL,SDA,MOSI,MISO,SCK 3P-SMD-4.1X1.5 5
28 10nF C7 C0603 1
29 100k R5 R0603 1
30 BUTTON-4P-REINFORCE SW1 4P-SMD-7X3.5X3.5H 1
31 LD1117 U3 SOT-223 1
32 47uF 10V C10 AVX-B 1
33 SEEEDSTUDIO_SCH_FRAME U$15,U$16,U$11 3
34 0R R6,R7 R0603 2
35 USB-MICRO-5P J2 MICRO-USB-5P 1
36 78M05 U1 TO252 1

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