CY7C1399BN 256 K (32 K 8) Static RAM Features Functional Description Temperature Ranges The CY7C1399BN is a high-performance 3.3 V CMOS Static RAM organized as 32,768 words by 8 bits. Easy memory Industrial: 40 C to 85 C expansion is provided by an active LOW Chip Enable (CE) and Commercial: 0 C to 70 C active LOW Output Enable (OE) and tristate drivers. The Automotive-A: 40 C to 85 C device has an automatic power-down feature, reducing the Single 3.3 V power supply power consumption by more than 95% when deselected. An active LOW Write Enable signal (WE) controls the Ideal for low-voltage cache memory applications writing/reading operation of the memory. When CE and WE High speed: 12 ns inputs are both LOW, data on the eight data input/output pins (I/O through I/O ) is written into the memory location 0 7 Low active power addressed by the address present on the address pins (A 0 180 mW (max) through A ). Reading the device is accomplished by selecting 14 Low-power alpha immune 6T cell the device and enabling the outputs, CE and OE active LOW, while WE remains inactive or HIGH. Under these conditions, Available in pb-free and non pb-free plastic SOJ and TSOP- the contents of the location addressed by the information on I packages address pins is present on the eight data input/output pins. The input/output pins remain in a high-impedance state unless the chip is selected, outputs are enabled, and Write Enable (WE) is HIGH. The CY7C1399BN is available in 28-pin standard 300-mil-wide SOJ and TSOP Type I packages. Logic Block Diagram g I/O 0 INPUT BUFFER I/O 1 A 0 A 1 I/O A 2 2 A 3 A 4 I/O 3 32K x 8 A 5 ARRAY A 6 A I/O 7 4 A 8 A 9 I/O 5 CE I/O 6 WE POWER COLUMN DOWN DECODER I/O 7 OE Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document : 001-06490 Rev. *D Revised September 26, 2011 ROW DECODER A 10 A 11 A 12 A 13 A 14 SENSE AMPS CY7C1399BN Selection Guide Description 12 15 Maximum access time (ns) 12 15 Maximum operating current (mA) 55 50 Maximum CMOS standby current (A) Commercial 500 Commercial (L) 50 Industrial 500 500 Automotive-A 500 Pin Configuration SOJ TSOP Top View Top View A 28 V 5 1 CC OE 22 21 A 0 A 6 27 WE 2 A 23 20 1 CE A 3 26 7 A 4 A 19 24 I/O 2 7 A 8 4 25 A 3 18 A 25 I/O 3 6 A 24 9 5 A 2 A 26 17 I/O 4 5 A 23 10 6 A 1 27 16 I/O WE 4 A 22 11 7 15 I/O OE V 28 3 CC A 21 12 A 8 0 A 1 14 GND 5 A 20 A 13 13 9 CE 2 I/O 6 2 A 19 I/O A7 3 12 14 10 7 I/O 1 I/O 18 I/O A 4 11 0 11 6 I/O 8 0 17 5 10 A I/O 12 I/O A 1 5 9 14 9 A A 16 6 I/O 13 I/O 10 13 2 4 A 8 7 A GND 15 I/O 11 14 3 12 Document : 001-06490 Rev. *D Page 2 of 12