Model 200 RAM: Difference between revisions
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The parts in the DigiKey cart above are not yet verified working/correct. | The parts in the DigiKey cart above are not yet verified working/correct. | ||
- Ram might not work | |||
- Pins might not be optimal | |||
This is parts enough to build 3 boards because you can't order less than 3 PCBs from OSHPark anyway. But you only need 1 board total per Model 200. The single new board takes the place of both ram sockets. You can reduce the parts quantities in the DigiKey order. | This is parts enough to build 3 boards because you can't order less than 3 PCBs from OSHPark anyway. But you only need 1 board total per Model 200. The single new board takes the place of both ram sockets. You can reduce the parts quantities in the DigiKey order. | ||
There will be unused pins left over. The order is for 3 40-pin sticks. You will break away and use 14 + 14 + 1 pins from 1 stick for each board. | |||
Revision as of 10:50, 17 October 2017
- (1) TC551001 128kB SRAM
- (1) 74AHC1G08 AND gate
- (1) 0805 1uF ceramic cap
- (29) pins
The parts in the DigiKey cart above are not yet verified working/correct. - Ram might not work - Pins might not be optimal
This is parts enough to build 3 boards because you can't order less than 3 PCBs from OSHPark anyway. But you only need 1 board total per Model 200. The single new board takes the place of both ram sockets. You can reduce the parts quantities in the DigiKey order.
There will be unused pins left over. The order is for 3 40-pin sticks. You will break away and use 14 + 14 + 1 pins from 1 stick for each board.