Memory organization and bus width
The CY7C1370D-167AXCB: Organised as 512K words by 36 bits — the 36-bit word width maps directly to a 32-bit data bus plus 4 parity/ECC bits per word, common in networking and telecom line-card buffers where single-bit error detection is handled in the data path.
Clock speed and access timing
The 3.4 ns access sets the minimum cycle time for the first read after a deselect or write-to-read turnaround.
The 0.5 mm pitch requires a controlled-impedance PCB stack-up for the 36-bit data bus at 167 MHz; trace length matching within 50 mm is typical to keep skew below 0.5 ns.