ST25R3911B NFC Evaluation Kit, NFC Reader, Ideal for Refreshing Passive NFC-Powered e-Papers
ST25R3911B NFC Eval Kit
ST25R3911B NFC Evaluation Kit For NFC-Related Learning / Developing
Ideal Choice For Waveshare Passive NFC-Powered E-Papers
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NFC Board Introduction
ST25R3911B NFC Chip, STM32F103R Controller,
OLED Display, User Buttons, And Common Used Interfaces
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- STM32F103RBT6
- Core: ARM® 32-bit Cortex™-M3
- Operating Frequency: 72MHz
- Operating Voltage: 2.0V-3.6V
- Package: LQFP64
- Memories: 128kB Flash, 20kB SRAM
- Communication Interfaces: 2 x SPI, 3 x USART, 2 x I2C, 1 x CAN, 1 x USB
- 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
Refreshing Example
Refreshing Passive NFC-Powered E-Paper By Using ST25R3911B NFC Board
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Specifications
| NFC CHIP | ST25R3911B |
|---|---|
| OPERATING FREQUENCY | 13.56MHz |
| OUTPUT POWER | 1.4W (max) |
| COMMUNICATION INTERFACE | SPI |
| POWER SUPPLY VOLTAGE69 | 5V |
| OPERATING VOLTAGE | 3.3V |
| PROTOCOL SUPPORT | ISO18092 (NFCIP-1) active P2P ISO14443A, ISO14443B, and FeliCa™ ISO15693 Other customized protocols (like MIFARE™ Classic) |
| E-PAPER SUPPORT | 7.5inch NFC-Powered e-Paper 4.2inch NFC-Powered e-Paper 2.9inch NFC-Powered e-Paper 2.13inch NFC-Powered e-Paper |
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WARNING
