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STMicroelectronics Electronic Components Datasheet

CR95HF Datasheet

13.56-MHz multi-protocol contactless transceiver IC

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CR95HF
13.56-MHz multi-protocol contactless transceiver IC
with SPI and UART serial access
Datasheet - production data
VFQFPN32 5x5 mm
Communication interfaces with a Host
Controller
– Serial peripheral interface (SPI) Slave
interface
– Universal asynchronous
receiver/transmitter (UART)
– Up to 528-byte command/reception buffer
(FIFO)
32-lead, 5x5 mm, very thin fine pitch quad flat
(VFQFPN) ECOPACK®2 package
Features
Operating modes supported:
– Reader/Writer
Hardware features
– Dedicated internal frame controller
– Highly integrated Analog Front End (AFE)
for RF communications
– Transmission and reception modes
– Optimized power management
– Tag Detection mode
RF communication @13.56 MHz
– ISO/IEC 14443 Type A and B
– ISO/IEC 15693
– ISO/IEC 18092
– MIFARE® Classic compatible (a) (b)
Applications
Typical protocols supported:
ISO/IEC 14443-3 Type A and B tags
ISO/IEC 15693 tags
ISO/IEC 18000-3M1 tags
NFC Forum tags: Types 1, 2, 3 and 4
ST short-range interface (SRI) tags
ST long-range interface (LRI) tags
ST Dual Interface EEPROM
a. MIFARE and MIFARE Classic are registered
trademarks of NXP B.V. and are used under license.
b. Parity Framing mode is compatible with
MIFARE® Classic requirements. However, access to
Authenticated state must be supported by an external
secure host which embeds the MIFARE® Classic
library.
October 2014
This is information on a product in full production.
DocID018669 Rev 10
1/72
www.st.com


STMicroelectronics Electronic Components Datasheet

CR95HF Datasheet

13.56-MHz multi-protocol contactless transceiver IC

No Preview Available !

Contents
Contents
CR95HF
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 List of terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pin and signal descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Power management and operating modes . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Startup sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Communication protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Universal asynchronous receiver/transmitter (UART) . . . . . . . . . . . . . . . 11
4.2 Serial peripheral interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.1 Polling mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.2 Interrupt mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3 Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4 Support of long frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1 Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2 List of commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.3 IDN command (0x01) description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.4 Protocol Select command (0x02) description . . . . . . . . . . . . . . . . . . . . . . 17
5.5 Send Receive (SendRecv) command (0x04) description . . . . . . . . . . . . . 22
5.6 Idle command (0x07) description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.6.1 Idle command parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.6.2 Using LFO frequency setting to reduce power consumption . . . . . . . . . 30
5.6.3 Optimizing wake-up conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.6.4 Using various techniques to return to Ready state . . . . . . . . . . . . . . . . 31
5.6.5 Tag detection calibration procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.7 Read Register (RdReg) command (0x08) description . . . . . . . . . . . . . . . 34
5.8 Write Register (WrReg) command (0x09) description . . . . . . . . . . . . . . . 35
5.8.1 Improving RF performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.8.2 Improving frame reception for ISO/IEC 14443 Type A tags . . . . . . . . . . 37
2/72 DocID018669 Rev 10


Part Number CR95HF
Description 13.56-MHz multi-protocol contactless transceiver IC
Maker STMicroelectronics
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CR95HF Datasheet PDF






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