Alliance Memory AS7C31026B-20TINTR

The AS7C31026B is a high-performance CMOS 1,048,576-bit Static Random Access Memory (SRAM) device organized as 65,536 words x 16 bits. It is designed for memory applications where fast data access, low power, and simple interfacing are desired. Equal address access and cycle times (tAA, tRC, tWC) of 10/12/15/20 ns with output enable access times (tOE) of 5, 6, 7, 8 ns are ideal for high-performance applications. When CE is high, the device enters standby mode. A write cycle is accomplished by asserting write enable (WE) and chip enable (CE). Data on the input pins I/O0 through I/O15 is written on the rising edge of (WE) (write cycle 1) or (CE) (write cycle 2). To avoid bus contention, external devices should drive I/O pins only after outputs have been disabled with output enable (OE) or write enable (WE). A read cycle is accomplished by asserting output enable (OE) and chip enable (CE) with write enable (WE) high. The chips drive I/O pins with the data word referenced by the input address. When either chip enable or output enable is inactive or write enable is active, output drivers stay in high-impedance mode. The device provides multiple center power and ground pins, and separate byte enable controls, allowing individual bytes to be written and read. LB controls the lower bits, I/O0 through I/O7, and (UB) controls the higher bits, I/O8 through I/O15. All chip inputs and outputs are TTL-compatible, and operation is from a single 3.3 V supply. The device is packaged in common industry standard packages.

• Industrial and Commercial versions
• Organization: 65,536 words x 16 bits
• Center power and ground pins for low noise
• High speed - 10/12/15/20 ns address access time - 5, 6, 7, 8 ns output enable access time
• Low power consumption: ACTIVE - 288 mW / max @ 10 ns
• Low power consumption: STANDBY - 18 mW / max CMOS I/O
• Easy memory expansion with CE, OE inputs
• TTL-compatible, three-state I/O
• JEDEC standard packaging - 44-pin 400 mil SOJ - 44-pin TSOP 2
• ESD protection ≥2000 volts
• Latch-up current ≥200 mA