F21 test board SIMM connector

["John Griessen" <john_g@xxxxxxxxxx>]

Here's a possible for a surface mount DRAM connector.

This one has 72 pins.  Are there 70 and 72 pin simms?

Surface mount makes the PC board simpler!


So for F21,
using 256K X 4 modules to get 20 bits requires 5 modules, 1 per connector =
5 connectors standing up from the board.

See:   http://www.molex.com/product/sockets/78968s.html


1.27mm (.050") Pitch SIMM Classic, SIMM Socket -
Left Polarization, Right Angle, Single Row, Metal
Latch, SMT, 78968


Features and Benefits

     Zero insertion force contacts improve socket and module contact life
     and provide for fast on-line assembly
     Guaranteed 2 points of contact per readout with standard JEDEC
     module
     Anti-overstress latch feature provides extra protection during module
     removal
     Polarization posts provide orientation for proper loading of socket
     into printed circuit board
     Polarization rib properly orients module to socket
     EIA standard dimensions

Reference Information

     Product Specification: PS-78968
     Packaging: Tray
     UL File No.: E29179
     CSA File No.: LR19980
     Mates With: JEDEC modules
     Designed In: Inches



     Normal Force: 150g average
     Durability: 25 cycles

Physical

     Housing: Black LCP, UL 94V-0
     Latch: Stainless Steel
     Contact: Phosphor Bronze Alloy
     Plating: See Table
     Temperature: -40 to +85°C