Waveshare 4.2inch NFC-Powered e-Paper Evaluation Kit

1. 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)
2. ST25R3911B: NFC chip, aka AS3911B
3. 23LC1024: SRAM, 1Mbit
4. CP2102: USB TO UART converter, for debugging
5. SPX3819: 3.3V voltage regulator
6. 1.3" OLED: blue display, 128×64 pixels, SH1106 driver
7. 4x user buttons:
8. 2x user indicators
9. MCU unused pins
10. USB TO UART port
11. Micro SD slot
12. SWD programming interface
13. NFC induction coil
14. UART pin configuration
1. RXD: connected to RXD2 by default, changeable to RXD1 via 0Ω resistor
2. TXD: connected to TXD2 by default, changeable to TXD1 via 0Ω resistor

• Rounded Metal Border, Nice Looking, Stunning Quality
• Passive NFC Solution, No Battery Required, No Messy Wiring
• Wireless Powering & Data Transfer
• Features Corner Hang Hole, Ideal For Handbag Decoration, Key Fob, Etc.
• Suitable For Smartphone / Key Fob, Contact Card QR Code, Hanging Ornament...

Wireless Powering & Data Transfer

To Refresh The Display Content, Use A Smart Phone With NFC Function, Or An NFC Reader, Close To The E-Paper, It'll Be Done In A Few Seconds

Specifications

• Power Supply: Wireless
• Grey Scale: 2
• Display Color: Black / White
• Refresh Time: 4s (data transfer time is not included)
• Dot Pitch: 0.212×0.212
• Display Size: 84.8mm×63.6mm
• Resolution: 400×300
• Outline Dimension: 105.1mm×94.1mm
• Viewing Angle >170°

Package Contains: 1x Waveshare 4.2inch NFC-Powered e-Paper Evaluation Kit

Outline Dimensions

Development resources: 
Wiki: www.waveshare.com/wiki/4.2inch_NFC-Powered_e-Paper