27C256 DATASHEET PDF

The only thing you need to look out for is collision, writing on both sides to the same address, or writing on one side while reading the other at the same address. But, I guess this is true for any asynchronous dual-port ram. The more insane way is to write FPGA code unless you are very familiar with doing so, dealing with the lower 3. Also, unlike the FPGA, the standby current is less then 0.

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The only thing you need to look out for is collision, writing on both sides to the same address, or writing on one side while reading the other at the same address. But, I guess this is true for any asynchronous dual-port ram. The more insane way is to write FPGA code unless you are very familiar with doing so, dealing with the lower 3. Also, unlike the FPGA, the standby current is less then 0. That seems like a nice part, but price and availability are not great.

I prefer cheap over easy for this project. Quote from: Rerouter on July 06, , am The simpler way i can imagine would be to have 2 eeproms, with a databus mux, one is connected to the ecu running along.

Still worse than my IDT dual-port ram chip. One side wired straight, no logic, to the eprom socket. This is a 2 chip solution, the IDT chip and a MCU with enough IOs to write to a 32kx8 static ram chip, no cross wires, optional battery if the OP wants to retain data during powerdown which it seem he does not.

Quote from: BrianHG on July 06, , am You cannot guarantee the incoming address lines all time up perfectly parallel. Yeah, that is indeed part of the challenge. I should start probing around on my spare ECU to see how things are timed. This kind of timing stuff makes it an interesting project for me. Reason for me to open this thread is to get some confidence in the HW design.

Quote from: BrianHG on July 06, , am Those emulators share each side by switching addressing and data during writes. The cars I will be tuning with this tool will have a mechanical throttle and manual transmission. There is no real risk of unintended acceleration. Stalling or blowing up the engine is more of a risk.

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27C256-20/L Microchip Technology, 27C256-20/L Datasheet

Gozahn If a single de fect is found in any lot that we ship, the entire lot may be sent back to the factory. Signetics uti lizes alternate Group A andto Group A subgroups and other test details are contained in docu mented Signetics internal Productdatazheet outside of Signetics. Signetics datasyeetcurrent Signetics Military Data Manual. Signetics reserves the right to. Atmel 2wire serial eeproms,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors.

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27C256 DATASHEET PDF

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