CY62128BLL-55ZAI Datasheet

• Temperature ranges
  • Commercial: 0°C to 70°C
  • Industrial: ?40°C to 85°C
  • Automotive: ?40°C to 125°C
• 4.5V ? 5.5V operation
• CMOS for optimum speed/power
• Low active power (70 ns, LL version, Commercial, Industrial)
  • 82.5 mW (max.) (15 mA)
• Low standby power (70 ns, LL version, Commercial, Industrial)
  • 110 µW (max.) (15 µA)
• Automatic power-down when deselected
• TTL-compatible inputs and outputs
• Easy memory expansion with /CE1, CE2, and /OE options

The CY62128B is a high-performance CMOS static RAM organized as 131,072 words by 8 bits. Easy memory expansion is provided by an active LOW Chip Enable (/CE1), an active HIGH Chip Enable (CE2), an active LOW Output Enable (/OE), and three-state drivers. This device has an automatic power-down feature that reduces power consumption by more than 75% when deselected.

Writing to the device is accomplished by taking Chip Enable One (/CE1) and Write Enable (/WE) inputs LOW and Chip Enable Two (CE2) input HIGH. Data on the eight I/O pins (I/O0 through I/O7) is then written into the location specified on the address pins (A0 through A16).

Reading from the device is accomplished by taking Chip Enable One (/CE1) and Output Enable /(OE) LOW while forcing Write Enable (/WE) and Chip Enable Two (CE2) HIGH. Under these conditions, the contents of the memory location specified by the address pins will appear on the I/O pins.