CY621282BN MoBL Automotive 1-Mbit (128 K 8) Static RAM 1-Mbit (128 K 8) Static RAM Features Functional Description Temperature Ranges The CY621282BN is a high-performance CMOS static RAM organized as 128K words by 8 bits. Easy memory expansion is Automotive-E: 40 C to 125 C provided by an active LOW Chip Enable (CE ), an active HIGH 1 4.5 V to 5.5 V operation Chip Enable (CE ), and active LOW Output Enable (OE). This 2 device has an automatic power-down feature that reduces power Complementary metal oxide semiconductor (CMOS) for consumption by more than 75% when deselected. optimum speed/power Writing to the device is accomplished by taking Chip Enable One Low active power (CE ) and Write Enable (WE) inputs LOW and Chip Enable Two 1 137.5 mW (max.) (25 mA) (CE ) input HIGH. Data on the eight I/O pins (I/O through I/O ) 2 0 7 is then written into the location specified on the address pins (A Low standby power 0 through A ). 137.5 W (max.) (25 A) 16 Reading from the device is accomplished by taking Chip Enable Automatic power-down when deselected One (CE ) and Output Enable (OE) LOW while forcing Write 1 TTL-compatible inputs and outputs Enable (WE) and Chip Enable Two (CE ) HIGH. Under these 2 conditions, the contents of the memory location specified by the Easy memory expansion with CE , CE , and OE options 1 2 address pins will appear on the I/O pins. Available in Pb-free 32-pin (450 mil-wide) small outline The eight input/output pins (I/O through I/O ) are placed in a 0 7 integrated circuit (SOIC) package high-impedance state when the device is deselected (CE HIGH 1 or CE LOW), the outputs are disabled (OE HIGH), or during a 2 write operation (CE LOW, CE HIGH, and WE LOW). 1 2 For a complete list of related resources, click here. Logic Block Diagram I/O 0 INPUT BUFFER I/O 1 A 0 A 1 I/O 2 A 2 A 3 A 4 I/O 128K x 8 3 A 5 ARRAY A 6 I/O 4 A 7 A 8 I/O 5 I/O 6 POWER COLUMN CE DOWN 1 DECODER CE 2 I/O 7 WE OE Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 001-65526 Rev. *D Revised April 15, 2015 ROW DECODER A 8 A 9 A 10 A 11 A 12 A 13 A 14 A 15 SENSE AMPS CY621282BN MoBL Automotive Contents Product Portfolio ..............................................................3 Ordering Information ...................................................... 10 Pin Configuration .............................................................3 Ordering Code Definitions ......................................... 10 Pin Definitions ..................................................................3 Package Diagrams .......................................................... 11 Maximum Ratings .............................................................4 Acronyms ........................................................................12 Operating Range ...............................................................4 Document Conventions ................................................. 12 Electrical Characteristics .................................................4 Units of Measure ....................................................... 12 Capacitance ......................................................................5 Document History Page ................................................. 13 Thermal Resistance ..........................................................5 Sales, Solutions, and Legal Information ...................... 14 AC Test Loads and Waveforms .......................................5 Worldwide Sales and Design Support ....................... 14 Data Retention Waveform ................................................6 Products ....................................................................14 Data Retention Characteristics .......................................6 PSoC Solutions ...................................................... 14 Switching Characteristics ................................................7 Cypress Developer Community ................................. 14 Switching Waveforms ......................................................8 Technical Support ..................................................... 14 Truth Table ......................................................................10 Document Number: 001-65526 Rev. *D Page 2 of 14