With the continuous hot smart locks, smart locks many manufacturers to make products decreased power consumption down, are constantly looking for automatically detecting card of 13.56mhz. Today, I would recommend for everyone to automatically find a 13.56mhz chip card industry's lowest power, not only is the industry's lowest PIN to PIN also fully hardware and software compatible MFRC522, CV520, FM17522, In addition, we can provide technical support to solve customers one on one problems encountered.
SI522 advantages:
1. Direct PIN2PIN compatible RC522, and FM17550 / FM17520 / RM522
2. completely replace RC522, receiving a decrease in energy consumption 10mA, compared to the new card and timed wake-homing, automatically detecting card power consumption of 4.5uA, the industry's lowest.
3. pioneered a new way to find the card, the card reader module no longer crashes.
i522 is a highly integrated, work 13.56MHz contactless chip reader, the reader supports ISO / IEC 14443 A / MIFARE. Without additional peripheral circuits, Si522 internal transmitter may command the reader antenna and ISO / IEC 14443A / MIFARE cards and transponder communications. The receiver module provides a robust and efficient decoding the demodulated signal circuits ISO / IEC 144443 A / MIFARE compatible cards and transponders. Digital processing module complete
ISO / IEC 14443 A, and frame error detection (parity and CRC).
ISO / IEC 14443 A, and frame error detection (parity and CRC).
Si522 support MIFARE products. Si522 support contactless communication with MIFARE series bidirectional
channel rates up 848kBd. Si522 internal integration and low power consumption automatically detecting card timed wake-up function, programmable time interval detecting card, card-searching process without MCU operation, look for the card successfully interrupt or wake-up timer wake MCU simultaneously achieve low current consumption and ensures low power consumption to find stability card mode.
channel rates up 848kBd. Si522 internal integration and low power consumption automatically detecting card timed wake-up function, programmable time interval detecting card, card-searching process without MCU operation, look for the card successfully interrupt or wake-up timer wake MCU simultaneously achieve low current consumption and ensures low power consumption to find stability card mode.
Host Interface provides the following:
• the SPI (Serial Peripheral Interface)
• serial UART (similar to RS232, voltage level value dependent on the supply voltage pin)
• wire serial interface standard
• the SPI (Serial Peripheral Interface)
• serial UART (similar to RS232, voltage level value dependent on the supply voltage pin)
• wire serial interface standard
Parameters and characteristics
• automatic detecting internal integrated low power wake-up function with the timing card
• highly integrated analog circuits, demodulation and decoding in response to
output driver • buffered, with a minimum of external components connected to the antenna
• supports ISO / IEC 14443 a / MIFARE
typical operating mode from the reader • up to 50mm, depending on the size and number of turns of the antenna
support • the MIFARE card reader series mode
• supports ISO / IEC 14443 a higher communication rates, up 848kBd
• support variety of host interface
-SPI interface, a communication speed of up to 10Mbit / S
- wire serial interface standard
-RS232 UART serial interface, a communication speed up 1228.8kBd, voltage level value dependent on the supply voltage pin
• automatic detecting internal integrated low power wake-up function with the timing card
• highly integrated analog circuits, demodulation and decoding in response to
output driver • buffered, with a minimum of external components connected to the antenna
• supports ISO / IEC 14443 a / MIFARE
typical operating mode from the reader • up to 50mm, depending on the size and number of turns of the antenna
support • the MIFARE card reader series mode
• supports ISO / IEC 14443 a higher communication rates, up 848kBd
• support variety of host interface
-SPI interface, a communication speed of up to 10Mbit / S
- wire serial interface standard
-RS232 UART serial interface, a communication speed up 1228.8kBd, voltage level value dependent on the supply voltage pin
• transmit and receive 64-byte FIFO buffer
• Flexible interrupt modes
• Low power of the hard reset function
• Software power-down mode
• Programmable timer
• internal oscillator, the quartz crystal connected 27.12MHz
• 2.5V to 3.6V supply voltage
• 4.5uA1 automatically detecting card ultra-low current
• CRC coprocessor
• Flexible interrupt modes
• Low power of the hard reset function
• Software power-down mode
• Programmable timer
• internal oscillator, the quartz crystal connected 27.12MHz
• 2.5V to 3.6V supply voltage
• 4.5uA1 automatically detecting card ultra-low current
• CRC coprocessor
Low power wake-up timing of the automatic detecting card and MCU
internal Si522 integrated low power wake-up timing automatically detecting card function, a programmable time interval to find the card, find
card operation process without MCU, wake-interrupt detecting card successfully or wake up the MCU timer functions.
Low power automatically detecting card
Si522 enabled by low power ACDEn bit in register homing CommandReg card function
(Auto Carrier Detect), chip set PowerDown immediately after the soft power-down mode and to enter a timing wake
wake test card. When the chip card is detected and an interrupt is generated immediately exit the low power mode automatically detecting card,
ACDEn CommandReg register bit is automatically cleared, wake in the OFF state of the MCU, DivIrqReg
ACDIRq bit register may query the MCU wakes the flag and perform card operations. By
interrupting wake MCU function must first disabling other interrupts, interrupt enable ACDIrq and passed to the IRQ pin. Set
wake-up time interval detecting card programmable by setting ACDConfigA register MDelay [5: 0] to
set the wake-up timing of detecting card interval ((MDelay + 1) * 100ms ). Si522 complete automatic detecting card itself,
without interference MCU, MCU may be in the OFF state, thereby reducing power consumption MCU, i.e. during automatic detecting card-based
systems there is only power and Si522 MCU off the power automatically find the card.
Low-power detecting card into an automatic level-triggered and edge-triggered mode mode. Level trigger mode must first
read the current value in the absence of ACDSetG card as an absolute reference value, the absolute reference value register write
ACDConfigC of ValSet [6: 0], and then the pattern can ACD, Si522 card is detected automatically exit the
low power mode automatically detecting card, first determine the MCU ACDIRq interrupt flag and clear, and then perform read and write card
operation, and finally again enable ACDEn and PowerDown bit into low power mode automatically detecting card. Edge-triggered
mode, Si522 card is detected automatically exit the low power mode automatically detecting card, first determine the MCU and clear
ACDIRq interrupt flag, and then perform operations such as card reader, and finally after the soft reset command to re-written with
opposite juxtaposed an automatic detecting card PowerDown bit lower ACDEn and enter.
Timing wake up the MCU
is the MCU prevent crashes during dormancy, Si522 integrated internal timer (ACDTimer) used for timing
wakeup MCU. Timed wake-up feature is set ACDTimerIEn DivIEnReg bit register enables. Wake-up
time interval by ACDConfigH configuration register, this register ACDTimerCounter [7: 0] is the timer
values, the count clock for the automatic detecting card interval time, wake-up interval is
ACDTimerCounter * (MDelay + 1) * 100 ms. After wake-up timer ACDTimer MCU, complex software required
position, re-configuration register, and then re-enter ACD mode.
internal Si522 integrated low power wake-up timing automatically detecting card function, a programmable time interval to find the card, find
card operation process without MCU, wake-interrupt detecting card successfully or wake up the MCU timer functions.
Low power automatically detecting card
Si522 enabled by low power ACDEn bit in register homing CommandReg card function
(Auto Carrier Detect), chip set PowerDown immediately after the soft power-down mode and to enter a timing wake
wake test card. When the chip card is detected and an interrupt is generated immediately exit the low power mode automatically detecting card,
ACDEn CommandReg register bit is automatically cleared, wake in the OFF state of the MCU, DivIrqReg
ACDIRq bit register may query the MCU wakes the flag and perform card operations. By
interrupting wake MCU function must first disabling other interrupts, interrupt enable ACDIrq and passed to the IRQ pin. Set
wake-up time interval detecting card programmable by setting ACDConfigA register MDelay [5: 0] to
set the wake-up timing of detecting card interval ((MDelay + 1) * 100ms ). Si522 complete automatic detecting card itself,
without interference MCU, MCU may be in the OFF state, thereby reducing power consumption MCU, i.e. during automatic detecting card-based
systems there is only power and Si522 MCU off the power automatically find the card.
Low-power detecting card into an automatic level-triggered and edge-triggered mode mode. Level trigger mode must first
read the current value in the absence of ACDSetG card as an absolute reference value, the absolute reference value register write
ACDConfigC of ValSet [6: 0], and then the pattern can ACD, Si522 card is detected automatically exit the
low power mode automatically detecting card, first determine the MCU ACDIRq interrupt flag and clear, and then perform read and write card
operation, and finally again enable ACDEn and PowerDown bit into low power mode automatically detecting card. Edge-triggered
mode, Si522 card is detected automatically exit the low power mode automatically detecting card, first determine the MCU and clear
ACDIRq interrupt flag, and then perform operations such as card reader, and finally after the soft reset command to re-written with
opposite juxtaposed an automatic detecting card PowerDown bit lower ACDEn and enter.
Timing wake up the MCU
is the MCU prevent crashes during dormancy, Si522 integrated internal timer (ACDTimer) used for timing
wakeup MCU. Timed wake-up feature is set ACDTimerIEn DivIEnReg bit register enables. Wake-up
time interval by ACDConfigH configuration register, this register ACDTimerCounter [7: 0] is the timer
values, the count clock for the automatic detecting card interval time, wake-up interval is
ACDTimerCounter * (MDelay + 1) * 100 ms. After wake-up timer ACDTimer MCU, complex software required
position, re-configuration register, and then re-enter ACD mode.
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