LC823455 Evaluation Board User's Manual

PublishTime：2021-07-13

●Overview:
■This document describes the hardware board of the LC823455 evaluation kit to help you understand the functions and schematics of the board. The block diagrams help you understand large scale schematics. Illustrations with detailed explanations help you learn the functions, and how to use and operate this board. This document applies to the users of this evaluation board as well as designers who plan to use the LC823455 to custom design a board.
●Features:
Flexible Development and Evaluation Board
■Header pins to access almost pins of LC823455
■Header pins to connect user’s power supply or PMIC
■Universal area to add user’s circuits or connectors
■Connectors to add ARDUINO shield or Pmod module

Three Types of Power Supply Input Connectors
■Micro USB connector (for USB bus−powered operation)
■Industrial standard, 5.5 mm/2.1 mm DC Jack
■JST XH 2-pin connector (for connecting battery)

Single 5 V Supply Operation by Onboard Regulators
■PMIC for LC823455

DCDC: 1.0 V/1.1 V/1.8 V, LDO: 1.0 V/1.5 V/1.8 V/3.3 V
■RTC Power Supply

Dedicated Low Iq LDOs, 0.8 V and 1.0 V
■General-purpose 3.3 V DCDC
■microSD slot dedicated 2.8 V DCDC
■Wi−Fi®/BT dedicated regulators
■ARDUINO shield and Pmod dedicated 3.3 V LDO

Audio I/O
■Dedicated DAMP output terminal for SE and BTL
■Dedicated DAMP LC LPF for SE and BTL
■High−Resolution Audio ready external ADC and DAC
■Dedicated Headphone Amplifier for external DAC
■Volume control for Headphone Amplifier
■3.5 mm stereo jacks for analog audio I/O
■2x On−board MEMS digital microphones

USB 2.0 Interface
■Device and Host available
■External boost DCDC for Host and OTG operation
■Insertion/Extraction detection

Storage
■On−board eMMC and serial flash (selectable)
■1x microSD slot

Wireless Connectivity
■PCI Express® M.2 connector for Wi−Fi/BT module
■Embedded Artists 1MW (Murata) Wi−Fi/BT M.2 module(#EAR00315)

Man−Machine Interface
■8x Push Switch
■2x LED (Red & Green)
■1x Character LCD

Development and Debug Ports
■SWD for Cortex®−M3 (20−pin Box Header)
■UART with USB−serial bridge (micro USB connector)
■JTAG for LPDSP (20−pin Box Header)

Boot Mode Setting
■Easy setting by two rotary switches

Clock
■No external clock source or generator required
■Onboard clock sources:
♦24 MHz crystal resonator for PLL source
♦32.768 kHz crystal resonator for RTC
♦32.768 kHz crystal oscillator for Wi−Fi/BT module

Battery Connectivity
■cell Li−Ion Battery available
■Onboard charger IC
■Battery voltage monitor function

Brand of Product：	ON Semiconductor
Part#：	LC823455 More Part#
Product Category：	Evaluation Board More
Application：	More
Data Type：	User's Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	December, 2019
Version Number：	Rev. 0
Data Encoding：	EVBUM2706/D
Data Size：	6.2 MB

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