The CY7C1011CV33 is a high-performance CMOS Static RAM organized as 131,072 words by 16 bits. Writing to the device is accomplished by taking Chip Enable (/CE) and Write Enable (/WE) inputs LOW. If Byte Low Enable (/BLE) is LOW, then data from I/O pins (I/O0 through I/O7), is written into the location specified on the address pins (A0 through A16). If Byte High Enable (/BHE) is LOW, then data from I/O pins (I/O8 through I/O15) is written into the location specified on the address pins (A0 through A16). Reading from the device is accomplished by taking Chip Enable (/CE) and Output Enable (/OE) LOW while forcing the Write Enable (/WE) HIGH. If Byte Low Enable (/BLE) 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 (/BHE) 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. The input/output pins (I/O0 through I/O15) are placed in a high-impedance state when the device is deselected (/CE HIGH), the outputs are disabled (/OE HIGH), the /BHE and /BLE are disabled (/BHE, /BLE HIGH), or during a write operation (/CE LOW, and /WE LOW). The CY7C1011CV33 is available in a standard 44-pin TSOP II package with center power and ground pinout, a 44-pin Thin Plastic Quad Flatpack (TQFP), as well as a 48-ball fine-pitch ball grid array (VFBGA) package.
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