This part is a kind of semiconductor called 78P156.
Function of this product has EM78P156.
Manufacturers : ELAN Microelectronics
Image and pinout :

Some of the text within the PDF file :
EM78P156E I. GENERAL DESCRIPTION EM78P156E is an 8-bit microprocessor with low-power and high-speed CMOS technology. There is a 1K*13bit Electrical One Time Programmable Read Only Memory (OTP-ROM) within it. It provides a PROTECTION bit to prevent a user’s code from intruding as well as 7 OPTION bits to match the user’s requirements. Because of the OTP-ROM, the EM78P156E offers users a convenient way to develop and verify their programs. Moreover, a user’s developed code can be programmed easily by an EMC writer. II. FEATURES • • • • Operating voltage range: 2.2V~5.5V Available in temperature range: 0°C~70°C Operating frequency range: DC ~ 36MHz Low power consumption: * less than 1.6 mA at 5V/4MHz * typical of 15 µA at 3V/32KHz * typical of 1 µA d [ ... ]
78P156 PDF Datasheet Download
