sonmicro

·	Single chip including microcontroller, analog circuit and antenna driver results in World's lowest count and smallest RFID reader/writer

·	Available as IC and Module

·	Firmware upgrade-able for custom specific applications

·	Module requires only antenna and power supply to function, IC requires just few more passive components to function.

·	Automatically demodulates and decodes RF signal and make the actual tag data ready. No need to know about complicated RFID subject

·	Supports Atmel/Temic T55xx transponders and EM4100/02. (Unique)

·	Supports Manchester RF/32 and Manchester RF/64 modulations

·	5V or 3.3V operation ( 3.3V option requires different firmware upgrade)

·	Supports hardware and software Sleep Operation

·	UART Interface up to 115200bps - I2C Interface up to 400KHz. Module comes with RS232 driver(optional)

·	Control-able General Purpose Outputs and Inputs

·	Supports flexible and programmable Wiegand 26 bit output format

General Overview

SM125-M1 is a 28 pin DIP (600 mil, wide) package type module including all necessary components for 125 KHz RFID Reader/Programmer except for only the antenna/inductor.

SM125-M1-232 is the same module with SM125-M1 but coming with ST232 IC (RS232 driver chip) on the bottom layer of the PCB to provide ready connection to the PC or any RS232 device.

SM125-IC and the passive components of the the analog front are assembled on the SM125-M1-232 module PCB, saving time and provides real "ready-to-use" functionality.

SM125-M1-232 has tremendous features. Unlike any competitors' chip, SM125-IC used on the module, performs all complicated RFID processes such as amplifying, filtering, demodulating, decoding and digitising, automatically and make the tag data ready to be sent over UART-RS232 / I2C / Wiegand 26-bit / Custom defined protocol and can trigger Buzzer/LED/Relay circuit.

SM125-M1 and SM125-M1-232 can be controlled over UART-RS232 /I2C or with its most valuable and unique feature can behave as automated without requiring any external controller.

SM125 chip and module include bootloader and can be upgraded over UART-RS232. For specific applications or requirements, SonMicro is able to modify the firmware and the hardware according to customer needs.

Attention!
The following information is missing in the RFID SM125M1 device data sheet:

For SM125-IC (chip) and module without RS232(SM125-M1);
if UART_RX pin is not used, then connect it to VCC with a pull-up resistor. Otherwise SM125 device get interrupted with the noise on this pin and may not work properly.

If UART_RX pin is connected to external microcontroller or MAX232 chip, then there is no need a special care for UART_RX pin.

SM125-IC, 125 KHz RFID chip, 28-SOIC, is the main core System-On-Chip IC used in SM125-M1 modules. It performs both analog and digital signal processing and it is also a microcontroller. The necessary analog, digital circuit and the firmware is designed and developed with a System-On-Chip IC. SonMicro's single chip solution including all analog,digital, antenna driver circuits and the programmed microcontroller in a single packaged IC is offered only by SonMicro and it is unique and the first in the world.

SM125-IC has tremendous features. Unlike any competitors' chip, SM125-IC performs all complicated RFID processes such as amplifying, filtering, demodulating, decoding and digitising, automatically and make the tag data ready to be sent over UART / I2C / Wiegand 26-bit / Custom defined protocol and can trigger Buzzer/LED/Relay circuit.

SM125 can be controlled over UART /I2C or with its most valuable and unique feature can behave as automated without requiring any external controller.

SM125-IC includes bootloader and can be upgraded over UART-RS232. For specific applications or requirements, SonMicro is able to modify the firmware and the hardware according to customer needs.