CoreS3-Lite

SKU:K128-Lite

Description

CoreS3-Lite is a programmable IoT controller packed with rich peripherals. Powered by an ESP32-S3 at its core, it features a 240 MHz Xtensa® 32-bit LX7 dual-core processor with 16 MB Flash and 8 MB PSRAM on board. On the front, a 2.0" capacitive touch IPS display is integrated, along with a 0.3 MP GC0308 camera and an LTR-553ALS-WA proximity/ambient-light sensor, enabling basic face-detection and recognition applications. The built-in BMI270 6-axis IMU plus BMM150 3-axis magnetometer provide additional interaction possibilities. With the AXP2101 power-management IC and BM8563 RTC, the device supports real-time power monitoring and low-power timed wake-up. For audio interaction, it offers a high-fidelity 16-bit I2S amplifier AW88298 paired with a 1 W speaker, and a full-duplex audio solution based on the ES7210 codec with dual-microphone input. A microSD card slot is included for development and data storage. The unit contains a 200 mAh LiPo battery and adopts a magnetic back cover for easy mounting and fixation. Typical scenarios include smart-home control, desktop robot companions, and more.

Tutorial

UiFlow2

This tutorial shows how to control the CoreS3-Lite with the UiFlow2 graphical-programming platform.

Arduino IDE

This tutorial shows how to program and control the CoreS3-Lite with the Arduino IDE.

Features

Based on the ESP32-S3
- 240 MHz Xtensa® 32-bit LX7 dual-core
- 2.4 GHz Wi-Fi
- 16 MB Flash + 8 MB PSRAM
2.0" capacitive-touch IPS display
0.3 MP camera (GC0308)
Integrated digital ambient-light & proximity sensor: LTR-553ALS-WA
6-axis IMU (BMI270) + 3-axis magnetometer (BMM150)
AXP2101 power management
BM8563 RTC with low-power timed wake-up
AW88298 16-bit I2S amplifier + 1 W speaker
ES7210 codec + dual-microphone array
microSD card slot
USB-OTG support
Magnetic back cover

Includes

1 × CoreS3-Lite
1 × Hex Key L-Shape 2.5 mm (For M3 Screw)

Applications

DIY project development
Smart-home systems
Desktop voice assistant
Educational interactive robots
Industrial equipment status monitor

Specifications

Specification	Parameter
SoC	ESP32-S3 240 MHz Xtensa® 32-bit LX7 dual-core, 2.4 GHz Wi-Fi, USB-OTG
Flash	16 MB
PSRAM	8 MB
Display	2.0" @ 320 × 240, ILI9342C
Touch	FT6336U
Camera	GC0308 @ 0.3 MP
Proximity	LTR-553ALS-WA
PMU	AXP2101
IMU	BMI270
Magnetometer	BMM150
RTC	BM8563
Speaker	AW88298 16-bit I2S amplifier @ 1 W
Audio Codec	ES7210, dual-mic input
Product Size	54.0 × 54.0 × 16.5 mm
Product Weight	54.0 g
Package Size	133.0 × 93.5 × 22.5 mm
Gross Weight	71.5 g

Learn

BMM150 Magnetic Interference

Products containing magnets may interfere with the BMM150 magnetic-field sensor, resulting in abnormal readings. When used with M5 controllers that contain magnets, remove the magnets and avoid placing the BMM150 near strong magnetic fields.

Download Mode

Before flashing, press and hold the reset button for 3 s (green LED on) to enter download mode.

Power On/Off

Power on: click the left-side power button once
Power off: press and hold the left-side power button for 6 s
Reset: click the bottom RST button once

Power Management

CoreS3-Lite uses the AXP2101 PMU together with the AW9523B IO expander to control power input/output directions. Refer to the pin states of BUS_OUT_EN and USB_OTG_EN in the figure below and check the example code in M5Unified.

Certifications

CE / MIC / FCC / SAR

Schematics

CoreS3-Lite Schematics PDF

1/7

PinMap

LCD

LCD resolution: 320 × 240

ESP32-S3	GPIO37	GPIO36	GPIO3	GPIO35
ILI9342C	MOSI	SCK	CS	DC

AW9523B	P1_1
ILI9342C	RST

AXP2101	DLDO	LX1
ILI9342C	BL	PWR

microSD

ESP32-S3	GPIO35	GPIO37	GPIO36	GPIO4
microSD	MISO	MOSI	SCK	CS

Camera & Proximity Sensor LTR-553ALS-WA

ESP32-S3	GPIO12	GPIO11	GPIO45	GPIO46	GPIO38
GC0308	I2C_SYS_SDA	I2C_SYS_SCL	CAM_PCLK	CAM_VSYNC	CAM_HREF
LTR-553ALS-WA	I2C_SYS_SDA	I2C_SYS_SCL

AW9523B	P1_0
GC0308	CAM_RST

CAP.TOUCH (I2C Addr: 0x38)

ESP32-S3	GPIO12	GPIO11
FT6336U	I2C_SYS_SDA	I2C_SYS_SCL

AW9523B	P0_0	P1_2
FT6336U	TOUCH_RST	TOUCH_INT

Microphone & Amplifier

ESP32-S3	GPIO12	GPIO11	GPIO34	GPIO33	GPIO13	GPIO14	GPIO0
ES7210 (0x40)	I2C_SYS_SDA	I2C_SYS_SCL	I2S_BCK	I2S_WCK	I2S_DATO		I2S_MCLK
AW88298(0x36)	I2C_SYS_SDA	I2C_SYS_SCL	I2S_BCK	I2S_WCK		I2S_DAT1

AW9523B	P0_2	P1_3
AW88298	AW_RST	AW_INT

AXP Power LED

AXP2101	AXP_CHG_LED
Red LED	RTC_VDD

RTC

ESP32-S3	GPIO12	GPIO11
BM8563	I2C_SYS_SDA	I2C_SYS_SCL

AXP2101	IRQ
BM8563	AXP_WAKEUP

IMU (3-axis Gyro + 3-axis Accel + 3-axis Magnetometer)

ESP32-S3	GPIO12	GPIO11
BMI270	I2C_SYS_SDA	I2C_SYS_SCL

Internal I2C Bus

ESP32-S3	GPIO12	GPIO11
BMI270	I2C_SYS_SDA	I2C_SYS_SCL
AXP2101	I2C_SYS_SDA	I2C_SYS_SCL
BM8563	I2C_SYS_SDA	I2C_SYS_SCL
ES7210	I2C_SYS_SDA	I2C_SYS_SCL
AW88298	I2C_SYS_SDA	I2C_SYS_SCL

BMM150

BMI270	BMI270_ASDx	BMI270_ASCx
BMM150	BMM_SDA	BMM_SCL

BMM150 Mounted on BMI270

Connected via BMI270’s Sensor Hub auxiliary I2C interface, enabling unified 9-axis sensor data acquisition.

HY2.0-4P

HY2.0-4P	Black	Red	Yellow	White
PORT.A	GND	5V	G2	G1

M5-BUS

Model Size

CoreS3-Lite Model Size PDF

Datasheets

Softwares

Arduino

UiFlow2

PlatformIO

CoreS3-Lite Factory Firmware

[env:m5stack-cores3]
platform = espressif32@6.7.0
board = esp32-s3-devkitc-1
framework = arduino
upload_speed = 1500000
monitor_speed = 115200
build_flags =
    -DESP32S3
    -DBOARD_HAS_PSRAM
    -mfix-esp32-psram-cache-issue
    -DCORE_DEBUG_LEVEL=5
    -DARDUINO_USB_CDC_ON_BOOT=1
    -DARDUINO_USB_MODE=1
lib_deps =
    M5Unified=https://github.com/m5stack/M5Unified

ESP-IDF

Easyloader

Easyloader	Download	Note
CoreS3-Lite Factory Firmware Easyloader	download	/

Other

I2C Address Map

Chip	ADDRESS
GC0308	0x21
LTR553	0x23
AXP2101	0x34
AW88298	0x36
FT6336	0x38
ES7210	0x40
BM8563	0x51
AW9523	0x58
BMI270	0x69
BMM150	0x10

Video

CoreS3-Lite Product Introduction

Product Comparison

Hardware Peripheral	CoreS3-Lite	CoreS3	CoreS3-SE
Camera (GC0308)	√	√	×
Proximity Sensor (LTR-553ALS-WA)	√	√	×
IMU (BMI270)	√	√	×
Compass (BMM150)	√	√	×
RTC	√	√	√
Microphone	√	√	√
Speaker	√	√	√
PMIC (AXP2101)	√	√	√
16 MB Flash & 8 MB PSRAM	√	√	√
Touch	√	√	√
Back Cover	Cover For CoreS3	Base DIN	×
Battery Capacity	200 mAh	500 mAh	×