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Product Description

NFC E-Paper Eval Kit 4.2"

4.2" NFC-Powered E-Paper Evaluation Kit

Comes With NFC-Powered E-Paper, NFC Reader, Micro SD Card, And Essential Accessories

Ready-To-Use

4.2" NFC-Powered E-Paper

Adopts Novel Passive NFC Technology

No Battery Required, No More Battery Life Trouble

Wireless NFC-Powered Display Refreshing

Passive NFC Solution, No Battery Required, No Messy Wiring, Stable Operation

How It Works

To Refresh The Display Content,

Use A Smart Phone With NFC Function, Or An NFC Reader,

Close To The E-Paper For Both Wireless Powering And Data Transfer

NFC Board Introduction

ST25R3911B NFC Chip, AT32F413RBT7 Controller,

OLED Display, User Buttons, And Common Used Interfaces

AT32F413RBT7
Core: ARM? 32-bit Cortex?-M4F
Operating Frequency: 200MHz
Operating Voltage: 2.0V-3.6V
Package: LQFP64
Memories: 128kB Flash, 32kB SRAM
Communication Interfaces: 2 x SPI, 5 x USART, 2 x I2C, 2 x CAN, 1 x USB, 1x SDIO
AD & DA Converters: 2 x AD (12-bit, shares 16 channels)
ST25R3911B: NFC chip, aka AS3911B
23LC1024: SRAM, 1Mbit
CP2102: USB TO UART converter, for debugging
SPX3819: 3.3V voltage regulator
1.3" OLED: blue display, 128×64 pixels, SH1106 driver
4x user buttons:
2x user indicators
MCU unused pins
USB TO UART port
Micro SD slot
SWD programming interface
NFC induction coil
UART pin configuration
RXD: connected to RXD2 by default, changeable to RXD1 via 0Ω resistor
TXD: connected to TXD2 by default, changeable to TXD1 via 0Ω resistor