128 Kbit SPI EEPROM for under-hood and high-temp environments
The M95128-DWDW4TP/K is a 128 Kbit serial EEPROM from STMicroelectronics, part of the Automotive AEC-Q100 series. It stores non-volatile data over an SPI bus at up to 20 MHz, organized as 16K x 8 bits.
20 MHz SPI bus — throughput and timing
The SPI interface runs at 20 MHz clock.
Package and footprint — 8-TSSOP
The 8-TSSOP package (4.40 mm width, 0.173" body) is a standard small-outline footprint. It is surface-mount only — no through-hole variant. The supplier device package is 8-TSSOP.
ROHS3 compliant — no exemptions that would trigger a PCN. The closest functional sibling in the same series is the M95080-DRMN8TP/K (8 Kbit, same 20 MHz SPI, same AEC-Q100 grade but 105°C max), which is a lower-density alternative — not a pin-compatible replacement. If you need 128 Kbit, this is the part.