128K x 36 synchronous SRAM for high-throughput data buffering
The CY7C1345G-100AXC is a 4.5Mbit synchronous SRAM organized as 128K words by 36 bits, clocked at 100 MHz with an 8 ns access time from clock edge.
Clock-cycle timing and supply rails
The 100 MHz clock defines the pipeline rate — every read or write completes in one clock cycle after the initial latency, so the controller sees deterministic throughput at 100 MT/s. The 8 ns access time from the rising clock edge is the time the data bus is valid; the controller must latch within that window, which is standard for 100 MHz parallel SRAM interfaces and well within the timing budget of most FPGA or ASIC memory controllers. The memory draws its peak current during continuous burst reads; the PCB decoupling plan should place a 0.1 µF ceramic per supply pin plus a 10 µF bulk cap within 1 inch of the package to keep the rail within regulation during the clock edge current spike.
Package, footprint, and temperature grade
Housed in a 100-lead LQFP (EIAJ standard) with a body size of 14 mm x 20 mm per the supplier device package designation 100-TQFP (14x20). Operating temperature is commercial grade: 0°C to 70°C ambient, suitable for indoor equipment, telecom central offices, and enterprise networking gear. The part is delivered in a tray — the standard handling medium for fine-pitch QFP packages.