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    The CN7160 Chip

    CN7160 is a MCU with NFC function that supports all modes compliant with the NFC Forum, including Reader/Writer, Card Emulation, and P2P modes. 


    CN7160 incorporates  an RF front-end module that supports both passive and active load modulation, enabling the use of extremely small antennas in mobiles or wearable devices. It also includes a built-in 256K-byte Flash memory, which can reduce the need for host interaction and minimize code size, greatly simplifying the design process. Furthermore, it is equipped with a built-in high-speed SPI interface compatible with mainstream MCUs.


    The CN7160 chip block diagram


    Functional Characteristics

    • General Features

      ●  High-speed 32-bit CS0 CPU core

      ●  256K-byte User Flash Memory space

           - 256 bytes per page

           - Configurable for data or program areas

      ●  12K-byte User RAM space

      ●  Three 16-bit prescalar for programmable timers and watchdog timer

      ●  40MHz internal oscillator RC1

      ●  370KHz internal oscillator RC2

      ●  CPU clock divider (divided by 1, 2, 4, or 8) and selectable clock sources

    • Interface Features

      • NCI V2.2 protocol interface compliant with NFC Forum specifications

      • Up to 10Mbps speed of SPI in Slave mode

    • RF Front-End Features

      ● High RF output power (up to 250mA)

      ● Supporting RF data rates up to 848kbps

      ● Supporting NFCIP-1 and NFCIP-2 protocols

      ● Supporting PICC mode (Card Emulation):

           - NFC Forum T4T (ISO14443A & B)mode

           - T3T (JIS X6319-4 Felica) mode

      ●  Supporting NFC Forum-compliant embedded T4T for NDEF short records

      ●  Supporting PCD mode (Reader/Writer):

           -  ISO14443 Type A and Type B

           - ISO 18092 passive mode (JIS X6319-4 Felica)

           - NFC T1T, T2T, T3T, T4T, T5T, Mifare (1K/4K)

    • RF Front-End Features 2

      ● Supporting VCD mode (Reader/Writer):

           - ISO15693/ICODE

      ●  Active and passive P2P modes: supporting NFCIP-1 Target and Initiator modes

      ●  Supporting active or passive load modulation

      ●  Supporting small antenna

      ●  Dynamic modulation of load amplitude based on external field strength

      ●  Low-power card detection

      ●  Dynamic power control in Reader/Writer mode

      ●  Complied with contactless EMV specifications

      ●  Complied with the specification 3.0 of NFC Forum Device

    • Additional Features

      ● Six GPIO pins, four of which are multiplexed with SPI

      ● Built-in Power Management Unit (PMU)

      ● Low-power modes (VBAT = 3.6V):

           - Hard power down mode (typical value:10.5uA, max value:16uA)

           - Standby mode:

                     - Enhanced RF detection (typical value:32uA, max value :52uA)

                     - Low-sensitivity RF detection (typical value: 21uA, max value: 36uA)

           - Polling with Low-Power Card Detection (LPCD) (typical value:100uA)

      ●  Autonomous mode when the host is turned off

      ●  IRQ output: interrupting the host MCU for various statuses

    • Additional Features 2

      ●  Automatic wakeup via RF field, internal timer, or host interface

      ●  Power-on Reset (POR) and software reset

      ●  128-bit unique ID

      ●  Operating with a 27.12MHz RF crystal

      ●  Tamper-resistant security features

      ●  Secure bootloader with firmware upgrade capability

      ●  True Random Number Generator (TRNG)

      ●  Hardware CRC

      ●  Dedicated GPIO voltage (1.8V or 3.3V) level

    • Operating Environment

      ●  Operating temperature range: -25 to +85 degrees Celsius

      ●  Operating voltage (VBAT): 2.5V to 5.5V

    • Standards

      ●  NFC Forum Devices Requirements V3.0 specification

      ●  ISO 14443

      ●  ISO 15693

      ●  ISO 18092 (NFCIP-1)

      ●  ISO 21481 (NFCIP-2)

      ●  EMV Contactless

      ●  ETSI TS 102 622 (HCI)

    Typical Application

    ● Smartphoness

    ● Tablets

    ● Wearable and handheld devices

    Technical Support

    • Complete development environment

    • Rich driver libraries

    • Complete application solutions

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