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PDF ST95HF Data sheet ( Hoja de datos )
| Número de pieza | ST95HF | |
| Descripción | Near field communication transceiver | |
| Fabricantes | STMicroelectronics | |
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ST95HF
Near field communication transceiver
VFQFPN32 5x5 mm
Features
Operating modes supported:
– Reader/Writer
– Card Emulation (ISO/IEC 14443-3 Type A)
– Peer-to-Peer
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
– Field Detection mode
RF communication @13.56 MHz
– ISO/IEC 14443 Type A and B in Reader
and Card Emulation modes
– ISO/IEC 15693 in Reader mode
– ISO/IEC 18092 in Reader and Card
Emulation modes
– MIFARE® Classic compatible (a) (b)
Datasheet - production data
Communication interfaces with a Host
Controller
– Serial peripheral interface (SPI) Slave
interface up to 2 Mbps
– Up to 528-byte command/reception buffer
(FIFO) depending on communication
protocol
32-lead, 5x5 mm, very thin fine pitch quad flat
(VFQFPN) ECOPACK®2 package
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 Dual Interface EEPROM
Typical ST95HF applications include:
Consumer electronics
Gaming
Healthcare
Industrial
Typical ST95HF use cases include:
NFC-enabled Wi-Fi pairing
NFC-enabled Bluetooth pairing
Data exchange / peer-to-peer
Communications with NFC/RFID tag (reader
mode)
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.
August 2014
This is information on a product in full production.
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1 page  
ST95HF
1 Description
Description
The ST95HF is an integrated transceiver IC for contactless applications.
The ST95HF manages frame coding and decoding in Reader, Card Emulation and
Peer-to-Peer modes for standard applications such as near field communication (NFC),
proximity and vicinity standards.
The ST95HF embeds an Analog Front End to provide the 13.56 MHz Air Interface.
The ST95HF supports ISO/IEC 14443 Type A and B communication in Reader and Card
Emulation modes, ISO/IEC 15693 (single or double subcarrier in Reader mode only) and
ISO/IEC 18092 protocols in Reader and Card Emulation modes.
The ST95HF also supports the detection, reading and writing of NFC Forum Type 1, 2, 3
and 4 tags.
Figure 1. ST95HF application overview
ST95HF
Interrupt Management
SPI
Host
Controller
(MCU)
1.1 Block diagram
Figure 2. ST95HF block diagram
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ST95HF
Power management and operating modes
Note:
Figure 5 shows the power-up sequence for a ST95HF device; where,
t0 is the initial wake-up delay
t1 is the minimum interrupt width
t2 is the delay for the serial interface selection
t3 is the HFO setup time (tSU(HFO))
t4 is the VPS ramp-up time from 0V to VPS
100 μs (minimum)
10 μs (minimum)
250 ns (typical)
10 ms (maximum)
10 ms (max. by design validation)
VPS must be 0V before executing the start-up sequence.
The serial interface is selected after the following falling edge of pin IRQ_IN when leaving
from POR or Hibernate state.
Table 4 lists the signal configuration used to select the serial communication interface.
SSI_0
SSI_1
Table 4. Select serial communication interface selection table
Pin Serial interface
SPI: 1
SPI: 0
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