PaperMono-Lite

SKU:C153-Lite

Description

PaperMono-Lite is a streamlined version of PaperMono, designed for low-power display and portable interactive applications. It features a 3.97-inch 4-level grayscale black-and-white E-Ink display with touch support, driven by SSD1677 at 480x800 resolution, and integrates the FT6336G touch controller and a front-light system for clear and stable reading and interaction in low-light environments. The core is powered by the ESP32-S3R8, equipped with 16MB Flash, 8MB PSRAM, and 2.4 GHz Wi-Fi, while also featuring an onboard buzzer, PDM microphone (LMD4737T261-AC02), RGB LED, BMI270 6-axis IMU, M5IOE1 IO expander, microSD card slot, and RX8130CE real-time clock. Compared to PaperMono, the Lite version does not include NFC and LoRa modules, retaining E-Paper interaction and basic wireless connectivity capabilities. With the M5PM1 multi-level power management system and a 1150mAh battery, it is suitable for e-readers, electronic shelf labels, information display terminals, and low-power embedded applications.

Tutorial

UiFlow2

UiFlow2

This tutorial introduces how to control the PaperMono-Lite device using the UiFlow2 graphical programming platform.

Note

E-Paper Usage Precautions

1. Avoid direct sunlight or prolonged exposure to high temperatures, as heat or strong UV rays may damage the panel.
2. After approximately 10 partial fast refreshes in software, it is recommended to perform a full-screen refresh to clear any accumulated severe ghosting.
3. The screen has built-in OTP waveforms that can be called directly. When using external custom waveforms, pay attention to DC balance; otherwise, irreversible damage to the panel may occur.
4. Avoid continuous partial fast refreshes without interruption to prevent irreversible damage to the panel due to long-term DC imbalance.

Touch Active Area

Features

• ESP32-S3R8 main controller
  • 16MB Flash
  • 8MB PSRAM
  • 2.4 GHz Wi-Fi
• 3.97-inch 4-level grayscale black-and-white E-Ink display with touch support
  • SSD1677
  • 480x800 resolution
  • 4-level grayscale display
  • FT6336G touch
• Integrated front-light system
• Audio interaction
  • PDM microphone (LMD4737T261-AC02)
  • Built-in buzzer
• Onboard peripherals
  • BMI270 6-axis IMU
  • M5IOE1 IO expander
  • microSD card slot
  • RX8130CE RTC
  • RGB LED
• M5PM1 multi-level power management
• Compared to PaperMono, does not include NFC and LoRa modules
• Built-in 1150mAh battery

Includes

• 1 x PaperMono-Lite

Applications

• E-reader
• Electronic shelf label
• Information display terminal
• Portable control panel
• Low-power IoT node

Specifications

Learn

Power On/Off

• Power On / Reset: Briefly press the power button once
• Power Off: Press the power button twice in succession

Download Mode

Press and hold the power button (for approximately 2 seconds) until the red LED flashes, then release it. The device will enter download mode and be ready for firmware flashing.

M5GFX LUT Refresh Speed

The following data are laboratory test results for PaperMono under different M5GFX refresh modes. Actual refresh time may vary depending on display content and operating environment; these values are for reference only.

Refresh Mode Demonstration:

Schematics

• PaperMono-Lite Schematics PDF

1/4

PinMap

E-Paper

The E-Paper reset is controlled via PYG5_ADC3 of M5IOE1, and the E-Paper 3.3V power supply is controlled via PYG3. The front-light brightness is controlled via G3_WAKEin of M5PM1.

Touch

microSD

DET is pulled up by the microSD power domain. When the card slot switch is closed, the detection pin is pulled low to identify microSD card insertion.

HMI

PYG0_RTC_INT and PYG4_IMU_INT are connected to M5PM1 and can serve as low-power wake-up sources.

The RGB LED indicator on the side of the PaperMono body consists of three color LEDs. The red LED is connected to LED_EN_PP of M5PM1 and will light up according to the default behavior of M5PM1 when the device is powered on. Since LED_EN_PP does not support PWM output mode, the adjustable color range of this indicator will be limited.

Audio

M5PM1

M5IOE1

Model Size

• PaperMono-Lite Model Size PDF

Datasheets

• ESP32-S3
• RX8130CE Register Datasheet
• BMI270
• SSD1677 Display Driver
• 3.97-inch Touchscreen

Softwares

Arduino

• PaperMono-Lite Arduino Quick Start
• PaperMono-Lite M5PM1 & M5IOE1 Power Management
• M5PM1 Arduino Library
• M5IOE1 Arduino Library
• M5Unified Arduino Library
• M5GFX Arduino Library

UiFlow2

• PaperMono-Lite UiFlow2 Quick Start

Protocol

• M5PM1 Power Management IC
• M5IOE1 IO Expander IC

ESP-IDF

• PaperMono-Lite Factory Firmware Source Code
• PaperMono-Lite OTP Example

PlatformIO

[env:m5stack-papermono-lite]
platform = espressif32@6.12.0
board = esp32-s3-devkitm-1
framework = arduino
board_build.partitions = default_16MB.csv
board_upload.flash_size = 16MB
board_upload.maximum_size = 16777216
board_build.arduino.memory_type = qio_opi
build_flags =
    -DESP32S3
    -DBOARD_HAS_PSRAM
    -mfix-esp32-psram-cache-issue
    -DCORE_DEBUG_LEVEL=0
    -DARDUINO_USB_CDC_ON_BOOT=1
    -DARDUINO_USB_MODE=1
lib_deps =
    M5Unified = https://github.com/m5stack/M5Unified#develop
    M5PM1 = https://github.com/m5stack/M5PM1
    M5IOE1 = https://github.com/m5stack/M5IOE1

Easyloader

Other

• PaperMono-Lite Factory Firmware Restoration

Video

Product Comparison

Product Compare	PaperMono	PaperMono-Lite
Main Controller	ESP32-S3R8	ESP32-S3R8
Display	3.97" 4-level grayscale black-and-white E-Paper, 480x800	3.97" 4-level grayscale black-and-white E-Paper, 480x800
Touch	FT6336G	FT6336G
Front Light	Integrated	Integrated
Wi-Fi	2.4 GHz	2.4 GHz
NFC	ST25R3916	❌
LoRa	Stamp LoRa-1262	❌
Expansion Storage	microSD	microSD
IMU	BMI270	BMI270
RTC	RX8130CE	RX8130CE
Battery	1150mAh	1150mAh
Shell Color	Gray	White