e - cmos corp. ( www.ecmos.com.tw ) page 1 of 9 4k10 n rev. f001 active rfid ic for 8 columns 8 rows keyboard remote controller e cf300 f eatures ? 64 control button ? 256 key code ? support double key ? pulse modulation ? wide angle ? green product ? low power consumption ? suit for home automatic application ? fcc compatible ? ce compatible general description e cf 300 is designed as rem ote controller ic for home - use consumer product, usually applied to home - pc, setup - box, tv systems. e - cmos s advance technology delivers small, reliable, very low power consumption, green and cost - effective keyboard remote controller solution. based on the rfid technology, e - cmos s rfid keyboard remote controller ic can work with very low power consumption and hence increase battery life. this provides a green solution to environment pollution and global warming and let your company become a green solution provider.
e - cmos corp. ( www.ecmos.com.tw ) page 2 of 9 4k10 n rev. f001 active rfid ic for 8 columns 8 rows keyboard remote controller e cf300 pin description abso lute maximum ratings recommend oper ating conditions pin name direction description rxclk i define clock input when write mode rxdata i/o define data i/o when write mode tx o modulation signal dev[2:0] i define which device is been controlled clk_sel i selec t internal clock or external clock vss i ground vin i power supply rxfrok i adjust rf output frequency xin/xout i connect external clock col[7:0] i define column of remote controller row[7:0] i define row of remote controller parameter symbol conditions max storage temperature t storemax +120 min storage temperature t storemin - 60 power supply voltage vin - 0.1v to +3.6v electrostatic discharge v esd 1kv parameter symbol min. typ. max. unit power supply voltage vin 2.5 3 3.6 v operating temperature t a - 15 - +55
e - cmos corp. ( www.ecmos.com.tw ) page 3 of 9 4k10 n rev. f001 active rfid ic for 8 columns 8 rows keyboard remote controller e cf300 electrical characteristics ? ac electrical characteristics (ta =25 , vin =3v, vss = 0v) ? dc electrical characteristics (vin =2.5v to 3.6v, vss= 0v) parameter symbol min. typ. max. unit rf output frequency f c - 433.92 - mhz rf output power p out - 20 - 0 dbm rf transmission setup time t rf_out - - 30 ms rf frequency error f error - - 1000 ppm interrogator transmit spurious emissions, in - band in accordance with local regulations - interrogator transmit spurious emissions, out of - band in accordance with local regulations - rf bandwidth in acco rdance with local regulations - transmit data rate dr ate - 1: 8k 0: 4k - bps modulation ask modulation type pulse modulation parameter symbol min. typ. max. unit average operating current i oc - 1 - ma standby current i sb - 1 - ua peak current i peak 10 - ma input low voltage v il - 0.1 - 0.3 v input high voltage v ih 1.6 - 2 v digital output low voltage v ol - - 0.3 v digital output high voltage v oh 1.6 - - v
e - cmos corp. ( www.ecmos.com.tw ) page 4 of 9 4k10 n rev. f001 active rfid ic for 8 columns 8 rows keyboard remote controller e cf300 function block diagram function description the ecf 300 consists of an power block, digital block and rf block. the power block can be used to support working voltage to the digital and transmitter block. the digital block is to provide a control code and series number to the rf block. the rf block is used to be the carrier generator with command signal which is come from digital part. and it can be adjusted the output power by using different res(r1) value. the output power is raised if the res become smaller. there are two operation modes in the ec f 300. one is transmitting mode and the other is writing mode. the function of transmitting mode is to transmit control code and series number to the device. there are 256 different kinds of control code, included of double key and over 40 billion kinds of series number. the device will work when the series number is matching between the device and re mote controller. the process of transmitting mode is as following: when user pulls the button then: 1. access sn data from memory. 2. creating command form: leading zero + preamble +data +sn +check sum. 3. encoding pwm form. 4. transmit the command by transmitter. the process of writing sn mode process is as following: 1. rxclk = 8khz then the mode is changed to writing sn mode from transmitter mode 2.after 32 clock cycle, send the write_sn command by the pin of data_in to write sn data to memory. 3 . checking response signal by the pin of data_in.
e - cmos corp. ( www.ecmos.com.tw ) page 5 of 9 4k10 n rev. f001 active rfid ic for 8 columns 8 rows keyboard remote controller e cf300 timing characteristics - > decoding of the transfer stream according to pwm coding the information read out from the tag is modulated as follows: - > decoding of the write mode stream the write mode of co ding information is as follows:
e - cmos corp. ( www.ecmos.com.tw ) page 6 of 9 4k10 n rev. f001 active rfid ic for 8 columns 8 rows keyboard remote controller e cf300 data transfer protocol - > transmitting mode: transfer protocol is described below write mode protocol - > sn write mode: the sn write command form and the response form are described as follows and the checksum helps to check the correctness of the transmission packet. the algorithm of checksum is each bit added beside the preamble.: command form: response form: tra nsfer protocol is described below
e - cmos corp. ( www.ecmos.com.tw ) page 7 of 9 4k10 n rev. f001 active rfid ic for 8 columns 8 rows keyboard remote controller e cf300 application schematic
e - cmos corp. ( www.ecmos.com.tw ) page 8 of 9 4k10 n rev. f001 active rfid ic for 8 columns 8 rows keyboard remote controller e cf300 mechanical characteristics qfn 32 package information
e - cmos corp. ( www.ecmos.com.tw ) page 9 of 9 4k10 n rev. f001 active rfid ic for 8 columns 8 rows keyboard remote controller e cf300 chip on board information 1. pad size:75um*75um 2. pad pitch:94um 3. die size: 1.12mm*0.94mm
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