Intel 8086 - User Manual

September 1990 Order Number: 231455-005
8086
16-BIT HMOS MICROPROCESSOR
8086/8086-2/8086-1
Y
Direct Addressing Capability 1 MByte
of Memory
Y
Architecture Designed for Powerful
Assembly Language and Efficient High
Level Languages
Y
14 Word, by 16-Bit Register Set with
Symmetrical Operations
Y
24 Operand Addressing Modes
Y
Bit, Byte, Word, and Block Operations
Y
8 and 16-Bit Signed and Unsigned
Arithmetic in Binary or Decimal
Including Multiply and Divide
Y
Range of Clock Rates:
5 MHz for 8086,
8 MHz for 8086-2,
10 MHz for 8086-1
Y
MULTIBUS System Compatible
Interface
Y
Available in EXPRESS
Ð Standard Temperature Range
Ð Extended Temperature Range
Y
Available in 40-Lead Cerdip and Plastic
Package
(See Packaging Spec. Order
Ý
231369)
The Intel 8086 high performance 16-bit CPU is available in three clock rates: 5, 8 and 10 MHz. The CPU is
implemented in N-Channel, depletion load, silicon gate technology (HMOS-III), and packaged in a 40-pin
CERDIP or plastic package. The 8086 operates in both single processor and multiple processor configurations
to achieve high performance levels.
231455–1
Figure 1. 8086 CPU Block Diagram
231455–2
40 Lead
Figure 2. 8086 Pin
Configuration

Intel 8086 Specifications

General

Architecture	x86
Clock Speed	5 MHz to 10 MHz
Data Width	16-bit
Address Bus Width	20-bit
Transistor Count	29, 000
Instruction Set	x86
Package	40-pin DIP
Microarchitecture	8086
Addressable Memory	1 MB
Manufacturing Process	3 μm
Voltage	+5V
Introduced	1978
Registers	14 registers (including segment registers)

Summary

Minimum and Maximum Modes

Absolute Maximum Ratings

D.C. Characteristics

A.C. Characteristics

Minimum Complexity System Timing Requirements

Specifies timing requirements for minimum complexity systems, detailing parameters like CLK cycle period, low/high times, and setup/hold times.

Max Mode System (Using 8288 Bus Controller) Timing Requirements

Specifies timing requirements for 8086 systems in maximum mode, referencing the 8288 bus controller.

A.C. Characteristics (Continued)

Timing Responses

Details various timing responses for AC characteristics, including delays and widths for signals.

Timing Responses (Continued)