CY62146ESL MoBL 4-Mbit (256 K 16) Static RAM 4-Mbit (256 K 16) Static RAM is ideal for providing More Battery Life (MoBL ) in portable Features applications such as cellular telephones. The device also has an automatic power down feature that reduces power consumption Very high speed: 45 ns when addresses are not toggling. Placing the device into standby Wide voltage range: 2.2 V to 3.6 V and 4.5 V to 5.5 V mode reduces power consumption by more than 99% when deselected (CE HIGH). The input and output pins (I/O through 0 Ultra low standby power I/O ) are placed in a high impedance state when the device is 15 Typical Standby current: 1 A deselected (CE HIGH), the outputs are disabled (OE HIGH), Maximum Standby current: 7 A both Byte High Enable and Byte Low Enable are disabled (BHE, BLE HIGH) or during a write operation (CE LOW and WE LOW). Ultra low active power Typical active current: 2 mA at f = 1 MHz To write to the device, take Chip Enable (CE) and Write Enable (WE) inputs LOW. If Byte Low Enable (BLE) is LOW, then data Easy memory expansion with CE and OE features from I/O pins (I/O through I/O ) is written into the location 0 7 Automatic power down when deselected specified on the address pins (A through A ). If Byte High 0 17 Enable (BHE) is LOW, then data from I/O pins (I/O through 8 Complementary metal oxide semiconductor (CMOS) for I/O ) is written into the location specified on the address pins 15 optimum speed and power (A through A ). 0 17 Available in Pb-free 44-pin thin small outline package (TSOP) II To read from the device, take Chip Enable (CE) and Output package Enable (OE) LOW while forcing the Write Enable (WE) HIGH. If Byte Low Enable (BLE) is LOW, then data from the memory Functional Description location specified by the address pins appears on I/O to I/O . If 0 7 Byte High Enable (BHE) is LOW, then data from memory The CY62146ESL is a high performance CMOS static RAM appears on I/O to I/O . See the Truth Table on page 11 for a 8 15 organized as 256K words by 16 bits. This device features complete description of read and write modes. advanced circuit design to provide ultra low active current. This Logic Block Diagram DATA IN DRIVERS A 10 A 9 A 8 A 7 A 6 256 K 16 A 5 I/O I/O 0 7 A RAM Array 4 A 3 I/O I/O 8 15 A 2 A 1 A 0 COLUMN DECODER BHE WE CE OE BLE Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 001-43142 Rev. *E Revised August 21, 2013 ROW DECODER A 11 A 12 A 13 A 14 A 15 A 16 A 17 SENSE AMPS CY62146ESL MoBL Contents Pin Configurations ...........................................................3 Ordering Information ......................................................12 Product Portfolio ..............................................................3 Ordering Code Definitions .........................................12 Maximum Ratings .............................................................4 Package Diagram ............................................................13 Operating Range ...............................................................4 Acronyms ........................................................................14 Electrical Characteristics .................................................4 Document Conventions .................................................14 Capacitance ......................................................................5 Units of Measure .......................................................14 Thermal Resistance ..........................................................5 Document History Page .................................................15 AC Test Loads and Waveforms .......................................5 Sales, Solutions, and Legal Information ......................16 Data Retention Characteristics .......................................6 Worldwide Sales and Design Support .......................16 Data Retention Waveform ................................................6 Products ....................................................................16 Switching Characteristics ................................................7 PSoC Solutions .......................................................16 Switching Waveforms ......................................................8 Cypress Developer Community .................................16 Truth Table ......................................................................11 Technical Support .....................................................16 Document Number: 001-43142 Rev. *E Page 2 of 16