The IDTSA/LA is a 16,bit high-speed static RAM organized The IDTSA/LA is packaged in pin mil plastic DIP, pin. The 5V CMOS SRAM is organized as 2K x 8. The offers a reduced power standby low-power (LA) version also offers a battery backup data. The IDTSA/LA is a 16,bit high-speed static RAM organized as 2K x 8. It is fabricated using IDT’s high-perfor- mance, high-reliability CMOS technology.
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So typically the output voltage of the IDT could be higher. I can view each byte of junk data the SRAM has been initialized with.
I have observed this behavior with all 3 IDT chips I ordered. Eli Lorden 12 2. Sign up using Email and Password. Sign up using Facebook. What value is the LED current-limiting resistor?
2x Holtek Ht CMOS 2kx8-bit SRAM Static Random Access Memory So SMD IC | eBay
2x Holtek Ht-6116-70 CMOS 2kx8-bit SRAM Static Random Access Memory So-24 SMD IC
Home Questions Tags Users Unanswered. Increase the current limit the LED’s or remove them, yeah its cool to see the data go by but useless and the problem in all likelihood will go away.
And be sure to use a separate resistor for each LED. After a while in this state the chip will begin to heat up and then all of the outputs switch to low, regardless of their previous state and without any intervention on my part.
What speed grade are your RAM chips, and where did you get them? Following this schematic, but using an IDT instead of the AS6C shown The chip is receiving 5V, which is within sfam tolerances listed on the datasheet. The chip is receiving 5V, which is within the tolerances listed on the datasheet.
Sign up or log in Sign up using Google. I have connected the outputs to 8 LEDs and tied all address inputs low. Better still, use another buffer to drive the LEDs. Post as a guest Name.