AT88SC0204CRF 查看數據表（PDF） - Atmel Corporation
零件编号
产品描述 (功能)
生产厂家
AT88SC0204CRF Datasheet PDF : 9 Pages
| |||
Block Diagram
Figure 1. Block Diagram
RF Interface
AC1
Command
and
Response
EEPROM
Over
C
Voltage
Clamp
Rectifier
VSS
Regulator
VDD
AC2
Clock
Extraction
Data
Extraction
Password
Verification
Frame Formatting
and
Error Detection
Interface
Anticollision
Random Number
Generator
Data Transfer
Authentication
Encryption and
Certification Unit
Communications
Anticollision Protocol
All personalization and communication with this device is performed through the RF
interface. The IC includes an integrated tuning capacitor, enabling it to operate with only
the addition of a single external coil antenna.
The RF communications interface is fully compliant with the electrical signaling and RF
power specifications in ISO/IEC 14443-2:2001 for Type B only. Anticollision operation and
frame formatting are compliant with ISO/IEC 14443-3:2001 for Type B only.
ISO/IEC 14443 nomenclature is used in this specification where applicable. The
following abbreviations are utilized throughout this document. Additional terms are
defined in the section in which they are used.
• PCD – Proximity Coupling Device: the reader/writer and antenna
• PICC – Proximity Integrated Circuit Card: the tag/card containing the IC and
antenna
• RFU – Reserved for Future Use: any feature, memory location, or bit that is held as
reserved for future use
• $ xx – Hexadecimal Number: denotes a hex number “xx” (Most Significant Bit on
left)
When the PICC enters the 13.56 MHz RF field of the host reader (PCD), it performs a
power on reset (POR) function and waits silently for a valid Type B polling command.
The CryptoRF PICC processes the antitearing registers as part of the POR process.
The PCD initiates the anticollision process by issuing an REQB or WUPB command.
The WUPB command activates any card (PICC) in the field with a matching AFI code.
2 AT88SC0204CRF
5022CS–CRRF–12/06
Share Link: 