Infineon CY7C1021BN-15VXCT, 1Mbit (64K x 16) asynchronous SRAM, 15 ns access time, 4.5V–5.5V supply, parallel interface, 0°C–70°C, 44-SOJ package, Tape & Reel.
| Parameter | Value |
|---|---|
| Memory type | Volatile |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 5.5V |
| Memory interface | Parallel |
| Operating temperature | 0°C ~ 70°C (TA) |
| Package | Tape & Reel (TR) |
| Technology | SRAM - Asynchronous |
| Access time | 15 ns |
| Memory size | 1Mbit |
| Memory format | SRAM |
| Case | 44-BSOJ (0.400\", 10.16mm Width) |
| Memory organization | 64K x 16 |
| Write cycle time - word, page | 15ns |
The Infineon CY7C1021BN-15VXCT is a 1Mbit asynchronous SRAM organized as 64K words by 16 bits. The 44-pin SOJ package (0.400" body width) is a surface-mount footprint common in mid-1990s through 2000s designs — a standard JEDEC outline that many pin-compatible SRAMs share.
No industrial or automotive derating is specified.
Yes, the lifecycle status is Obsolete. Infineon has discontinued production, so the only supply channel is surplus and broker inventory.
A functional replacement must be a 64K x 16 asynchronous SRAM in a 44-SOJ package with a 15 ns or faster access time and a 4.5V–5.5V supply range. Pin-compatible parts from other manufacturers (e.g., ISSI, Alliance Memory) exist but require verifying the footprint and timing against the original Cypress datasheet.