Ampro Corporation 486E - Manual (Page 105)

3–1
Chapter 3
Technical
S
pecifications
Little Board™/486e CPU Specifications
The following section provides technical specifications for the Little Board™/486e CPU.
CPU/Motherboard
! CPU: 3.3 V 100 MHz or 133 MHz 80486
! System RAM:
Socket for 168-pin DIMM, FPM or EDO only
Supports up to 64M bytes total RAM
! 15 interrupt channels (8237-equivalent)
! 7 DMA channels (8259-equivalent)
! 3 programmable counter/timers (8253-equivalent)
! Standard PC/AT keyboard port
! Standard PC speaker port with .1 watt output drive
! Battery-backed real-time clock and CMOS RAM
Up to 10 year battery life
Supports battery-free operation
! Award ROM BIOS with Ampro embedded-system extensions
Embedded-PC System Enhancements
! One 32-pin byte-wide memory socket:
Usable with 128K to 1M byte EPROMs, 128K to 512K byte FLASH EPROMs, 128K to 512K byte
SRAMs, or 128K to 512K byte NOVRAMs (Non-volatile RAMs)
Onboard programming of 5 V FLASH EPROMs
Configurable as 64K or 128K byte window, addressed in the range of D0000h to EFFFFh
Supported by Ampro SSD Support Software and many third-party operating systems
! 2K-bit configuration EEPROM:
Stores system SETUP parameters
Supports battery-free boot capability
512 bits are available for OEM use
! Watchdog Timer:
Utilizes the onboard real-time clock alarm function
Timeout triggers a hardware reset or non-maskable interrupt
! Powerfail NMI triggers when +5 Volt power drops below +4.65 Volts.