Product Summary

The QU80C188EC-25 is one of the highest integration members of the 186 Integrated Processor Family. Two serial ports are provided for services such as interprocessor communication, diagnostics and modem interfacing. Four DMA channels of QU80C188EC-25 allow for high speed data movement as well as support of the onboard serial ports. A flexible chip select unit simplifies memory and peripheral interfacing. The three general purpose timer/counters of QU80C188EC-25 can be used for a variety of time measurement and waveform generation tasks. A watchdog timer is provided by QU80C188EC-25 to insure system integrity even in the most hostile of environments. Two 8259A compatible interrupt controllers handle internal interrupts, and, up to 57 external interrupt I/O ports round out the feature set of the QU80C188EC-25.

Parametrics

QU80C188EC-25 absolute maximum ratings: (1)Storage Temperature: 65℃ to +150℃; (2)Case Temperature Under Bias: 65℃ to +100℃; (3)Supply Voltage with Respect to VSS: 0.5V to +6.5V; (4)Voltage on Other Pins with Respect to VSS: -0.5V to VCC+0.5V.

Features

QU80C188EC-25 features: (1)Low-Power, Static, Enhanced 8086 CPU Core; (2)Two Independent DMA Supported UARTs, each with an Integral Baud Rate Generator; (3)Four Independent DMA Channels; (4)22 Multiplexed I/O Port Pins; (5)Two 8259A Compatible Programmable Interrupt Controllers; (6)Three Programmable 16-Bit Timer/Counters; (7)32-Bit Watchdog Timer; (8)Ten Programmable Chip Selects with Integral Wait-State Generator; (9)Memory Refresh Control Unit; (10)Power Management Unit; (11)On-Chip Oscillator; (12)System Level Testing Support (ONCE Mode); (13)Direct Addressing Capability to 1 Mbyte Memory and 64 Kbyte I/O; (14)Low-Power Operating Modes:; (15)Available in Extended Temperature Range (-40℃ to +85℃); (16)Supports 80C187 Numerics Processor Extension.

Diagrams

QU80C188EC-25 block diagram

QU80386EXTB25
QU80386EXTB25


IC INT PROC 3.3V 25MHZ 132QFP

Data Sheet

Negotiable 
QU80386EXTC25
QU80386EXTC25


IC INT PROC 5V 25MHZ 132QFP

Data Sheet

Negotiable 
QU80386EXTC33
QU80386EXTC33


IC INT PROC 5V 33MHZ 132QFP

Data Sheet

Negotiable 
QU80386SXTA25
QU80386SXTA25


IC MPU 32-BIT 5V 25MHZ 100-QFP

Data Sheet

Negotiable 
QU80386SXTA33
QU80386SXTA33


IC MPU 32-BIT 5V 33MHZ 100-QFP

Data Sheet

Negotiable 
QU80386SXTA40
QU80386SXTA40


IC MPU 32-BIT 5V 40MHZ 100-QFP

Data Sheet

Negotiable