ATA5575M1330-DDB Microchip

ATA5575M1 Read/Write LF RFID IDIC 100kHz to 150kHz DATASHEET Features Contactless power supply Contactless read/write data transmission Radio frequency f from 100kHz to 150kHz RF 128-bit EEPROM user memory: 16Bytes (8Bits each) 8-bit configuration memory High Q-antenna tolerance due to built-in options Access control applications UNIQUE data format (Manchester, RF/64) 40-bit data memory 15-bit parity memory 9-bit header memory On-chip trimmed antenna capacitor 330pF 3% 250pF 3% Mega pads 200m 400m Mega pads 200m 400m with 25m gold bumps for direct coil bonding Other options: Direct access mode OTP functionality 9167G-RFID-08/141. Description The Atmel ATA5575M1 is a contactless read/write identification IC (IDIC ) for applications in the 100-kHz to 150-kHz frequency band. A single coil connected to the chip serves as the ICs power supply and bi-directional communication interface. This antenna coil together with the chip form a transponder or tag. The on-chip 128-bit user EEPROM (16 bytes with 8 bits each) can be read and written byte-wise from a base station (reader). Data is transmitted from the IDIC (uplink) using load modulation. This is achieved by damping the RF field with a resistive load between the two terminals Coil 1 and Coil 2. The IC receives and decodes serial base station commands (downlink), which are encoded as 100% amplitude-modulated (OOK) pulse-interval-encoded bit streams. The Atmel ATA5575M1 is an EEPROM-based circuit. It is optimized for maximum read range. Programming is also possible, but the write range is limited. The chip has to be locked after loading the application-specific data into the device. Until the lock bits are set properly, the Atmel ATA5575M1 transmits all digits 0 in UNIQUE Format with appropriate header. Typical applications run at 125kHz. 2. System Block Diagram Figure 2-1. RFID System Using Atmel ATA5575M1 Tag Transponder Power Reader or Memory Base station Data Atmel ATA5575M1 3. Atmel ATA5575M1 - Functional Blocks Figure 3-1. Block Diagram POR Modulator Coil 1 Mode register Memory (136-bit EEPROM) Controller Coil 2 Input register Test logic HV generator 2 ATA5575M1 DATASHEET 9167GRFID08/14 Analog front end Data-rate Write generator decoder Coil interface Controller