QU80386EXTC25 Intel, QU80386EXTC25 Datasheet - Page 7

• Manufacturer Part Number: QU80386EXTC25
• Description: IC INT PROC 5V 25MHZ 132QFP
• Manufacturer: Intel

Specifications of QU80386EXTC25

• Processor Type: 386EX
• Features: 32-bit, Extended Temp
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 132-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 863826

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Datasheet
Figure 1. Intel386™ EX Embedded Processor Block Diagram
Introduction
The Intel386™ EXTB embedded processor operates at 20 or 25 MHz at 3 Volts nominal. The
Intel386 EXTC embedded processor operates at 25 or 33 MHz at 5 Volts. In this datasheet,
“Intel386 EX processor” refers to both the Intel386 EXTB and EXTC processors.
The Intel386 EX embedded processor is a highly integrated, 32-bit, fully static processor optimized
for embedded control applications. With a 16-bit external data bus, a 26-bit external address bus,
and Intel’s System Management Mode (SMM), the Intel386 EX microprocessor brings the vast
software library of Intel386 architecture to embedded systems. It provides the performance benefits
of 32-bit programming with the cost savings associated with 16-bit hardware systems.
Core Enhancements
Intel386 ™ CX Core
Processor Core
- A20 Gate
- CPU Reset
- SMM
INTR
Address
Data
Bus Interface
Intel386™ EX Embedded Microprocessor
Unit
Asynchronous Serial I/O
Synchronous Serial I/O
Watchdog Timer Unit
1 channel, full duplex
Interrupt Control Unit
(82C54 compatible)
(16450 compatible)
Timer/counter Unit
Management Unit
and Bus Arbiter Unit
Clock and Power
(8237A compatible)
DRAM Refresh
DMA Controller
Bus Monitor
Control Unit
3 channels
Chip-select
2 channels
JTAG Unit
I/O Ports
2 channels
Unit
A2849-02
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