| Density | 128K |
| Interface Type | SPI |
| Organization | 16384 x 8 |
| Vcc (V) | 2.7 |
| Packages | TSSOP 8 PDIP 8 SOIC 8 |
| Pb-Free Packages |
TSSOP 8 PDIP 8 SOIC 8 |
128Kbit, SPI Bus Serial Automotive EEPROM, supports Mode 0 and 3 operation.
The AT25128A/256A provides 131,072/262,144 bits of serial electrically-erasable programmable read-only memory (EEPROM) organized as 16,384/32,768 words of 8 bits each. The device is optimized for use in many industrial and automotive applications where low-power and low-voltage operation are essential. The devices are available in space-saving 8-lead JEDEC SOIC and 8-lead TSSOP packages. The AT25128A/256A is enabled through the Chip Select pin (CS) and accessed via a three-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO), and Serial Clock (SCK). All programming cycles are completely self-timed, and no separate erase cycle is required before write.
| Ordering Code | Package | Operation Range |
| AT25128AN-10SQ-2.7 AT25128A-10TQ-2.7 |
8S1 8A2 |
Lead-free/Halogen-free/ Automotive Temperature (–40°C to 125°C) |
| AT25256AN-10SQ-2.7 AT25256A-10TQ-2.7 |
8S1 8A2 |