386SX Embedded Microcontroller

Product Overview

The M6117C is a highly integrated, low voltage, single-chip implementation of Intel?
386SX compatible microprocessor plus ULi M1217B chipset. The M6117C provides the following functions :
1) Intel? 386SX core
2) Supports EDO DRAM controller including FP mode
3) Coprocessor Interface
4) ISA interface
5) Peripheral Interface (includes two cascaded 8237 DMA controllers, a 74612 memory mapper, 2 cascaded 8259 interrupt controller, and an 8254 programmer counter
6) Built-in RTC
7) Built-in PS2 Keyboard Controller and Mouse
8) Built-in WATCHDOG timer
9) 16-bit GPI/O
10) IDE interface.

Features

Static Intel 386SX compatible Core

Operating Power Supply 5.0V
Operating frequency 25Mhz to 40Mhz
Coprocessor Interface
Supports 80387SX coprocessor interface
Memory Controller
Supports EDO DRAM
Supports on board memory size up to 16M bytes for 386SX or
64M bytes upgrade system using 256K, 512K, 1M, 4M or 16M
SIMMs
Supports up to 4-bank DRAM interface
Page interleave DRAM access for FP mode
Programmable shadow RAM from A to B segment in 128K byte and C to F segment in 32K byte unit
Provides "RAS only" refresh or "CAS before RAS" refresh types
Parity generation and checking
Peripheral Interface
Includes 2 cascaded 8237 DMA controllers
Includes 1 74612 memory mapper
Includes 2 cascaded 8259 interrupt controllers
Includes 1 8254 programming counter
ISA Interface
Executes cycles for requests from CPU, DMA and ISA bus master
Assembles or de-assembles data for multiple bus cycle or unmatched data width
Generates refresh signals to ISA slots during DRAM refresh cycles
Built-in RTC
Internal Real Time Clock that provides 128 byte CMOS RAM
Built-In PS2/AT Keyboard Controller
Internal PS2/AT keyboard controller and mouse
PMU interface
Supports CPU SMM mode, SMI feature
Supports APM control
Provides External Suspend mode switch
Provides four (4) system states for power saving (On, Doze,
Standby, Suspend)
Supports RTC alarm wake up control
Expandable GPI/O signals
Provides sixteen External power control input and output signals
Watchdog timer
When timer times out , a system reset or NMI or IRQ happens
IDE interface
Provides a decoder for external IDE connection
Packaging
208-pin PQFP package