4-Mbit (512K words × 8-bit) SPI/SDI/SQI 143 Mhz Serial RAM with Optional Battery Backup (-40°C to +85°C)
| Pin | Name | Type |
|---|---|---|
| 11 | SI/SIO0 | bidirectional |
| 2 | SO/SIO1 | bidirectional |
| 3 | SIO2 | bidirectional |
| 13 | ~{HOLD}/SIO3 | bidirectional |
| 12 | SCK | input |
| 1 | ~{CS} | input |
| 10 | VBAT | input |
| 5 | NC | passive |
| 6 | NC | passive |
| 7 | NC | passive |
| 8 | NC | passive |
| 9 | NC | passive |
| 14 | VCC | power_in |
| 4 | VSS | power_in |
