8088 Datasheet PDF – 8-Bit HMOS Microprocessor – INTEL

Part Number: 8088

Function: 8-bit HMOS microprocessor, 5 MHz

Package: 40-Pin CERDIP Type

Manufacturer: Intel





The Intel 8088 is a high performance microprocessor implemented in N-channel, depletion load, silicon gate technology (HMOS-II), and packaged in a 40-pin CERDIP package. The processor has attributes of both 8-and 16-bit microprocessors. It is directly compatible with 8086 software and 8080/8085 hardware and peripherals. Processor initialization or start up is accomplished with activation (HIGH) of the RESET pin. The 8088 RESET is required to be HIGH for greater than four clock cycles.


Pinout and Block Diagram




1. 8-Bit Data Bus Interface

2. 16-Bit Internal Architecture

3. Direct Addressing Capability to 1 Mbyte of Memory

4. Direct Software Compatibility with 8086 CPU

5. 14-Word by 16-Bit Register Set with Symmetrical Operations

6. 24 Operand Addressing Modes

7. Byte, Word, and Block Operations

8. 8-Bit and 16-Bit Signed and Unsigned Arithmetic in Binary or Decimal, Including Multiply and Divide

Other data sheets are available within the file: 8088-2

8088 Datasheet PDF

8088 pdf


EM78P156E Datasheet PDF – 8-bit CMOS Microprocessor

Part Number: EM78P156E

Function: 8-bit CMOS microprocessor, 1K13-bit (OTP-ROM), 2.3V~5.5V

Package: DIP, SOP, SOIC 18 Pin Type

Manufacturer: ELAN Microelectronics


EM78P156E datasheet



The EM78P156E is an 8-bit microprocessor with low-power and high-speed CMOS technology. There is a 1K*13-bit 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.


• Operating voltage range: 2.2V~5.5V

• Available in temperature range: 0°C~70°C

• Operating frequency range: DC ~ 36MHz

• 1Kx13 bits on chip ROM

• One security register to prevent the code in the OTP memory from intruding

• One configuration register to match the user’s requirements

• 48×8 bits on chip registers (SRAM)

• 2 bi-directional I/O ports

• 5 level stacks for subroutine nesting

Other data sheets are available within the file:

EM78P156EHAS, EM78P156EHKM, EM78P156EHM, EM78P156EHP


EM78P156E Datasheet PDF Download

EM78P156E pdf