The CM-MEM-40 is a 32 bit general purpose VMEbus Memory Expansion Board that incorporates features demanded in military & industrial applications.
Maximum on-board capacity is 32 MB, distributed in 16 banks, each one populated with four 32 pin JEDEC devices of 512KB of capacity.
Memory chips of SRAM, EPROM or FLASH may be installed in a flexible way, supporting all standard JEDEC chips.
The metallic layer within the PCB benefits heat dissipation & uniform component temperatures, thus increasing component longevity & module MTBF.
Jumpers allow mapping the board in any of the 128 memory blocks, 32 MB size, available in the Extended A32/D32 addressing range. On-board programming is carried out with +5VDC only.
Military versions with thermal overlay greatly improve capability to withstand shock & vibration.
The CM-MEM-40 32 MB SRAM version (CM-MEM-40/S) incorporates a watch-dog & stand-by rechargeable battery, allowing for use as a solid state hard disk (RAM disk).
All versions are compatible at the function level, Industrial versions allow low cost software development.
C: Commercial range >> Implements low cost Commercial plastic IC's rated for 0 to +70°C. Continuous board operation from 0 to +60°C. Class II industrial quality connectors. Storage from -10 to +85°C.
I: Industrial range >> Manufactured with Industrial range plastic or ceramic IC's rated for -25 (-40) to +85°C. Continuous module operation from -20 to +75°C. Class II industrial quality connectors. Storage from -40 to +100°C.
R+: Military Rugged+ range >> Implements ceramic IC's rated from -55 to +125°C. Class I MIL-C-55302 connectors. Conduction cooled PCB with thermal overlay. Operation from -40 to +85°C. Storage from -55 to +125°C.
883: Military 883 range >> Manufactured with conduction cooled PCB & MIL-STD-883 B/C military ceramic parts (-55 to +125°C). Class I MIL-C-55302 connectors. Operation from -50 to +90°C. Storage from -55 to +125°C.
V (Board Version)
S1: Memory expansion with 8 MB SRAM. Battery & Watch-dog.
S2: Memory expansion with 16 MB SRAM. Battery & Watch-dog.
S3: Memory expansion with 32 MB SRAM. Battery & Watch-dog.
F1: Memory expansion with 8 MB FLASH. Battery & Watch-dog.
F2: Memory expansion with 16 MB FLASH. Battery & Watch-dog.
F3: Memory expansion with 32 MB FLASH. Battery & Watch-dog.
SF: Memory expansion with 8 MB SRAM + 8 MB FLASH. Battery & Watch-dog.
SF: Memory expansion with 16 MB SRAM + 16 MB FLASH. Battery & Watch-dog
T (Board Temperature Range)
C: Commercial. Fiberglass PCB only.
I: Industrial. Fiberglass PCB only.
R+: Military Rugged+. Conduction cooled PCB only.
883: Military 883. Conduction cooled PCB only.
M (PCB Mechanical Version)
A: IEC-297 Mechanics with front panel I/O connectors.
B: P1101.2 Military mechanics, dummy front panel & wedge-locks.
Part Number Example: CM-MEM-40/1/R+/B
- Memory expansion board with 8 MB SRAM. Battery & Watch-dog.
- Military Rugged+ range (-40 to +85°C operating).
- IEEE P1101.2 Military mechanics with wedge-locks.
LEVEL 1, CM-MEM-40 MAP: User´s manual. Module hardware functional description oriented toward software development.
LEVEL 2, CM-MEM-40 MMT: Maintenance manual with BIT scope, test point wave forms. logic analyzerdiagrams, etc.
LEVEL 3, CM-MEM-40 NAT: Maintenance manual according to NATO forces. Includes the above manuals plus mechanical & electrical schematics, NATO list part number, extended functional description, maintenance & calibration procedures for in-service equipment.
Wind River Systems VxWorks Tornado: The CM-MEM-40 is supported by VxWorks Tornado & is ideal for developing real time software under UNIX environments. A complete "C" language driver in source code is available at low cost. Drivers include a floppy-disk & user's manual.
Microware Systems OS-9: Drivers for the real time OS-9 Operating System are available in "C" language. This driver is supplied with user's manual & source code floppy-disk.
Microtec Research MCC-68K Drivers: A "C" language source code driver written for the MCC-68K cross-compiler from Microtec Research. This low cost option is intended for using a PC as host.
* NOTE - Drivers for other leading operating systems can be optionally supplied under request.