SRAM Chip Async Single 3.3V 8M-Bit 512K x 16 70ns 48-Pin FBGA

The CY62157CV33 are high-performance CMOS static RAMs organized as 512K words by 16 bits. These devices feature advanced circuit design to provide ultra-low active current. This is ideal for providing More Battery Life (MoBL) in portable applications such as cellular telephones. The devices also have an automatic power-down feature that significantly reduces power consumption by 80% when addresses are not toggling. The device can also be put into standby mode reducing power consumption by more than 99% when deselected. The input/output pins are placed in a high-impedance state when: deselected, outputs are disabled, both Byte High Enable and Byte Low Enable are disabled, or during a write operation. Writing to the device is accomplished by taking Chip Enable 1 and Write Enable inputs LOW and Chip Enable 2 HIGH. If Byte Low Enable is LOW, then data from I/O pins, is written into the location specified on the address pins. If Byte High Enable is LOW, then data from I/O pins is written into the location specified on the address pins. Reading from the device is accomplished by taking Chip Enable 1 and Output Enable LOW and Chip Enable 2 HIGH while forcing the Write Enable HIGH. If Byte Low Enable is LOW, then data from the memory location specified by the address pins will appear on I/O0 to I/O7. If Byte High Enable is LOW, then data from memory will appear on I/O8 to I/O15. See the truth table at the back of this data sheet for a complete description of read and write modes.

• Temperature Ranges
  • Automotive-A: -40°C to 85°C
  • Automotive-E: -40°C to 125°C
• Voltage range:
  • CY62157CV30: 2.7V-3.3V
  • CY62157CV33: 3.0V-3.6V
• Ultra-low active power
  • Typical active current: 1.5 mA @ f = 1 MHz
  • Typical active current: 5.5 mA @ f = fmax
• Low standby power
• Easy memory expansion with CE/ and OE1/, CE/ and OE2/ and features
• Automatic power-down when deselected
• CMOS for optimum speed/power
• Available in Pb-free and non Pb-free 48-ball FBGA package