製品概要
概要
The ST25TB512-AC is a contactless memory, powered by an externally transmitted radio wave. It contains a 512-bit user EEPROM. The memory is organized as 16 blocks of 32 bits. The ST25TB512-AC is accessed via the 13.56 MHz carrier. Incoming data are demodulated and decoded from the received amplitude shift keying (ASK) modulation signal and outgoing data are generated by load variation using bit phase shift keying (BPSK) coding of a 847 kHz sub-carrier. The received ASK wave is 10% modulated. The data transfer rate between the ST25TB512-AC and the reader is 106 kbit/s in both reception and emission modes.
The ST25TB512-AC follows the ISO 14443 - 2 Type B recommendation for the radio-frequency power and signal interface.
The ST25TB512-AC is specifically designed for short range applications that need re-usable products. The ST25TB512-AC includes an anticollision mechanism that allows it to detect and select tags present at the same time within range of the reader. The anticollision is based on a probabilistic scanning method using slot markers.
The ST25TB512-AC contact-less EEPROM can be randomly read and written in block mode (each block containing 32 bits). The instruction set includes the following nine commands:
The ST25TB512-AC memory is organized in three areas, as described in Table 1. The first area is an resettable OTP (one time programmable) area in which bits can only be switched from 1 to 0. Using a special command, it is possible to erase all bits of this area to 1. The second area provides two 32-bit binary counters which can only be decremented. The last area is the EEPROM memory. It is accessible by block of 32 bits and includes an auto-erase cycle during each Write_block command.
Die floor plan and physical options related to the die assembly are described in Figure 2.
For the option 1 of the die assembly, the CTUN (referenced in RF electrical parameters) can increase from 0.5 pF to 1 pF. The option 2 of the die assembly is showing a tripod which can be used for physical stability, having no impact on CTUN parameter.
-
特徴
- ISO 14443-2 Type B air interface compliant
- ISO 14443-3 Type B frame format compliant
- 13.56 MHz carrier frequency
- 847 kHz subcarrier frequency
- 106 Kbit/second data transfer
- 8 bit Chip_ID based anticollision system
- 2 count-down binary counters with automated anti-tearing protection
- 64-bit Unique Identifier
- 512-bit EEPROM with write protect feature
- Read_block and Write_block (32 bits)
- Internal tuning capacitor: 68 pF
- 1 million erase/write cycles
- 40-year data retention
- Self-timed programming cycle
- 5 ms typical programming time
eDesignSuite
eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
NFC/RFID Calculators
Power Supply Design Tool
LED Lighting Design Tool
Digital Power Workbench
Power Tree Designer
AC Switches Simulator
Rectifier Diodes Simulator
STPOWER Studio
Twister Sim
TVS Simulator
Estimate
Active Filters
Comparators
Low side Current Sensing
High side Current Sensing
NFC Inductance
UHF Link Budget
NFC Tuning Circuit
おすすめ製品
EDAシンボル / フットプリント / 3Dモデル
STMicroelectronics - ST25TB512-AC
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Please select one model supplier :
EDAシンボル
フットプリント
3Dモデル
品質 & 信頼性
| 製品型番 | マーケティング･ステータス | パッケージ | グレード | RoHSコンプライアンスグレード | 材料宣誓書** |
|---|---|---|---|---|---|
| ST25TB512-AC6G6 | 量産中 | GOLD BUMPED DICE | インダストリアル | N/A |
(**) st.comで提供している材料宣誓書は、パッケージ･ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください
サンプル & 購入
| 製品型番 | 製品ステータス | Budgetary Price (US$)*/Qty | STから購入 | Order from distributors | パッケージ | 梱包タイプ | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | 無償サンプル | ESample Max Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小 | 最大 | |||||||||||||||
| ST25TB512-AC6G6 | | | distributors 販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください |
|
| |||||||||||
ST25TB512-AC6G6 量産中
販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください
（*）概算用の参考価格（US$）です。現地通貨でのお見積りについては、STのセールス･オフィスまたは販売代理店までお問い合わせください。