| Density | 4K |
| Interface Type | 3-WIRE |
| Organization | 512 x 8 or 256 x 16 |
| Vcc (V) | 1.8, 2.7 |
| Pb-Free Packages |
VDFN 8 |
4Kbit, 3-wire Bus Serial EEPROM (x8 or x16 memory organization) with sequential read.
The AT93C56A/66A provides 2048/4096 bits of serial electrically erasable programmable read-only memory (EEPROM) organized as 128/256 words of 16 bits each(when the ORG pin is connected to VCC) and 256/512 words of 8 bits each (when the ORG pin is tied to ground). The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operations are essential.
The AT93C56A/66A is available in space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead Ultra Thin mini-MAP (MLP 2x3), 8-lead Ultra Lead Frame Land Grid Array (ULA), 8-lead TSSOP, and 8-ball dBGA2 packages.
The AT93C56A/66A is enabled through the Chip Select pin (CS) and accessed via a three-wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK). Upon receiving a read instruction at DI, the address is decoded and the data is clocked out serially on the data output pin DO. The write cycle is completely self-timed and no separate erase cycle is required before write. The write cycle is only enabled when the part is in the Erase/Write Enable State. When CS is brought “high” following the initiation of a write cycle, the DO pin outputs the Ready/Busy status of the part.
The AT93C56A/66A is available in 2.7V to 5.5V and 1.8V to 5.5V versions.
| Ordering Code | Package | Operation Range |
| AT93C66A-10PU-2.7 AT93C66A-10PU-1.8 AT93C66A-10SU-2.7 AT93C66A-10SU-1.8 AT93C66AW-10SU-2.7 AT93C66AW-10SU-1.8 AT93C66A-10TU-2.7 AT93C66A-10TU-1.8 AT93C66AU3-10UU-1.8 AT93C66AD3-10DH-1.8 AT93C66AY6-10YH-1.8 |
8P3 8P3 8S1 8S1 8S2 8S2 8A2 8A2 8U3-1 8D3 8Y6 |
Lead-free/Halogen-free/ Industrial Temperature (-40°C to 85°C) |