Features: •High speed
-15 ns
•Fast tDOE
•Low active power
-715 mW
•Low standby power
-220 mW
•CMOS for optimum speed/power
•Easy memory expansion with CE</a>1, CE</a>2, and OE</a> features
•TTL-compatible inputs and outputs
•Automatic power-down when deselectedPinout
Specifications(Above which the useful life may be impaired. For user guide-lines, not tested.)
Storage Temperature .............................65°C to +150°C
Ambient Temperature with
Power Applied.........................................55°C to +125°C
Supply Voltage to Ground Potential...............0.5V to +7.0V
DC Voltage Applied to Outputs
in High Z State[3]..........................................0.5V to +7.0V
DC Input Voltage[3].......................................0.5V to +7.0V
Output Current into Outputs (LOW).............................20 mA
Static Discharge Voltage........................................... >2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current.................................................... >200 mADescriptionThe CY7C185 is a high-performance CMOS static RAM orga-nized as 8192 words by 8 bits. Easy memory expansion is provided by an active LOW chip enable (CE</a>1), an active HIGHchip enable (CE</a>2), and active LOW output enable (OE</a>) and three-state drivers. This device has an automatic power-down
feature (CE</a>1 or CE</a>2), reducing the power consumption by 70% when deselected. The CY7C185 is in a standard 300-mil-wide DIP, SOJ, or SOIC package.
An active LOW write enable signal (WE</a>) controls the writ-ing/reading operation of the memory. When CE</a>1 and WE</a> in- puts are both LOW and CE</a>2 is HIGH, data on the eight data input/output pins (I/O0 through I/O7) is written into the memory location addressed by the address present on the address pins (A0 through A12). Reading the CY7C185 is accomplished by selecting theCY7C185 and enabling the outputs, CE</a>1 and OE</a> active LOW, CE</a>2 active HIGH, while WE</a> remains inactive or HIGH. Under these conditions, the contents of the location ad- dressed by the information on address pins are present on the eight data input/output pins.
The input/output pins of CY7C185 remain in a high-impedance state unless the chip is selected, outputs are enabled, and write enable (WE</a>) is HIGH. A die coat is used to insure alpha immunity.
CY7C185 Data Sheet
