T5556

Features:

Low-power, low-voltage operation
Contactless power supply
Contactless read/write data transmission
Radio Frequency (RF): 100 kHz to 150 kHz
256 bit OTP memory in 8 blocks of 32 bits
224 bits of user data in 7 blocks of 32 bits
Extensive protection against contactless malprogramming of the OTP memory
50 ms to write and verify a block during setup and configuration
Configuration options:
  Bitrate [bit/s]: RF/8, RF/16, RF/32, RF/40,RF/50, RF/64, RF/100, RF/128
  Modulation:     NRZ, FSK, PSK, Manchester, Biphase
  Other:             Terminator modes (BT, ST)


Specifications

Parameter	Symbol	Value	Unit
Maximum DC current into Coil 1/ Coil 2	Icoil	10	mA
Maximum AC current into Coil 1/ Coil 2, f = 125 kHz	icoil pp	20	mApp
Power dissipation (dice) 1)	Ptot	100	mW
Electro-static discharge maximum to MIL-Standard 883 C method 3015	Vmax	2000	V
Operating ambient temperature range	Tamb	40 to +85
Storage temperature range 2)	Tstg	40 to +125
Maximum assembly temperature for less than 5 min 3)	Tsld	+150

Notes: 1) Free-air condition, time of application: 1 s
2) Data retention reduced
3) Assembly temperature of 150°C for less than 5 minutes does not affect the data retention.

Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.


Description

The T5556 is a contactless OTP (one-time programmable)- IDentification IC (IDIC^®)* for applications in the 125 kHz range. A single coil, connected to the chip, serves as the IC's power supply and bidirectional communication interface.

The on-chip 256-bit OTP memory (8
32 bit blocks) T5556 can be contactless programmed once through a base station. After configuration and locking, the T5556 operates as R/O tag. One block is reserved for setting the operation modes of the IC.

Reading occurs by damping the coil by an internal load. There are different bitrates and encoding schemes possible. Programming occurs by interrupting the RF field in a special way.