This part is a kind of semiconductor called 93C56.

Function of this product has 16Kbit/ 8Kbit/ 4Kbit/ 2Kbit/ 1Kbit and 256bit 8-bit or 16-bit wide.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

M93C86, M93C76, M93C66 M93C56, M93C46, M93C06 16Kbit, 8Kbit, 4Kbit, 2Kbit, 1Kbit and 256bit (8-bit or 16-bit wide) MICROWIRE Serial Access EEPROM FEATURES SUMMARY s Industry Standard MICROWIRE Bus s Figure 1. Packages Single Supply Voltage: – 4.5V to 5.5V for M93Cx6 – 2.5V to 5.5V for M93Cx6-W – 1.8V to 5.5V for M93Cx6-R 8 1 PDIP8 (BN) s s Dual Organization: by Word (x16) or Byte (x8) Programming Instructions that work on: Byte, Word or Entire Memory Self-timed Programming Cycle with Auto-Erase Ready/Busy Signal During Programming Speed: – 1MHz Clock Rate, 10ms Write Time (Current product, identified by process identification letter F or M) – 2MHz Clock Rate, 5ms Write Time (New Product, identified by process identification letter W) s s s 8 1 SO8 (MN) 150 mil width s s s [ ... ]

93C56 PDF Datasheet Download