This part is a kind of semiconductor called M1EN.

Function of this product has CMOS ASIC encoder.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

¤@µØ¥b¾ÉÅéªÑ¥÷¦³--¤½¥q EN/DECODER MOSDESIGN SEMICONDUCTOR CORP. 2 STATES ENCODER 2 ̬±àÂë IC GENERAL DESCRIPTION ¹¦ÄÜÐðÊö M1EN The M1EN is a CMOS ASIC encoder. It will en-code 12 parallel inputs and serially transmit them to the output when transmits enable TE depressed. These address inputs are 2 states i.e. LOW (0) or OPEN (1). FEATURES ²úÆ·Ìس¤ ¡E Same Rosc matched to the Decoder M1D/F. ¡E 212 = 4,096 codes. ¡E 4 cycles transmission each time. ¡E Direct data transmit type£º(Eliminating TE and diodes). ©¤ M1EN-H£ºSwitch to VDD. APPLICATIONS ²úÆ·Ó¦Óà ¡E Car/home alarm system, garage control etc.. BLOCK DIAGRAM ¹¦ÄÜ·½¿éͼ X Oscillator Y Freq Divider Output Driver DO TE A0 Input Control A11 Control Logic unit * [ ... ]

M1EN PDF Datasheet Download