128 Mbit parallel NOR flash with 166 MHz read throughput
The S26KS128SDPBHI020: Its 166 MHz clock frequency and 96 ns access time place it in the high-throughput segment of parallel NOR — the read bandwidth is set by the bus width and clock rate, not by the access time, which governs the initial random-access latency.
Supply voltage and temperature grade define the operating envelope
Operates from a 1.7 V to 1.95 V core supply — this is a 1.8 V nominal part with margin for battery-discharge or regulated rail droop. The 24-VBGA package (6x8 mm, 24-ball) uses a 0.80 mm ball pitch — a 4-layer PCB with microvias under the BGA is typical for fan-out; the 1.8 V supply rail needs local decoupling within 5 mm of the VDD balls to keep the transient response within the operating range.