IDT70V7288L

64K x 16 Bank-Switchable Dual-Ported SRAM Architecture
Four independent 16K x 16 banks
1 Megabit of memory on chip
Fast asynchronous address-to-data access time: 15ns
User-controlled input pins included for bank selects
Independent port controls with asynchronous address & data busses
Four 16-bit mailboxes available to each port for interprocessor communications; interrupt option
 Interrupt flags with programmable masking
Dual Chip Enables allow for depth expansion without external logic
UB and LB are available for x8 or x16 bus matching
LVTTL-compatible, single 3.3V (±5%) power supply
Available in a 100-pin Thin Quad Flatpack (14mm x 14mm)
Industrial temperature range (-40°C to +85°C) is available for selected speeds

NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
2. VTERM must not exceed Vcc + 5% for more than 25% of the cycle time or 10ns maximum, and is limited to < 20mA for the period of VTERM > Vcc + 5%.

The IDT70V7288L is a high-speed 64K x 16 (1M bit) Bank-Switchable Dual-Ported SRAM organized into four independent 16K x 16 banks. The device has two independent ports with separate controls, addresses, and I/O pins for each port, allowing each port to asynchronously access any 16K x 16 memory block not already accessed by the other port. Accesses by the ports into specific banks are controlled via bank select pin inputs under the user's control. Mailboxes are provided to allow inter-processor communications. Interrupts are provided to indicate mailbox writes have occurred.

An automatic power down feature of the IDT70V7288L controlled by the chip enables (CE0 and CE1) permits the onchip circuitry of each port to enter a very low standby power mode and allows fast depth expansion. The IDT70V7288 offers a maximum address-to-data access time as fast as 15ns, and is packaged in a 100-pin Thin Quad Flatpack (TQFP).