Infineon (Cypress) CY7C1021BNL-15ZSXA, 1Mbit asynchronous SRAM, 64K x 16 organization, 15 ns access time, 4.5-5.5 V supply, -40 to 85°C, 44-TSOP II (10.16 mm width), parallel interface.
| Parameter | Value |
|---|---|
| Memory type | Volatile |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 5.5V |
| Memory interface | Parallel |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tray |
| Technology | SRAM - Asynchronous |
| Access time | 15 ns |
| Memory size | 1Mbit |
| Memory format | SRAM |
| Case | 44-TSOP (0.400\", 10.16mm Width) |
| Memory organization | 64K x 16 |
| Write cycle time - word, page | 15ns |
The Infineon CY7C1021BNL-15ZSXA is a 1Mbit asynchronous SRAM organized as 64K x 16 bits, built for parallel-interface applications that need fast, deterministic read/write cycles without clock synchronisation.
The write cycle time matches the access time at 15 ns, so back-to-back writes complete in a single bus cycle on a 33 MHz master.
Yes, the CY7C1021BNL-15ZSXA is marked Obsolete by Infineon. There is no official replacement listed in the record. For ongoing production, you will need to source from the independent surplus channel or qualify a pin-compatible alternative with matching 15 ns access time and 64K x 16 organization.
No official replacement is recorded. Several 1Mbit async SRAMs from ISSI, Alliance Memory, or Cypress legacy parts share the same pinout — verify timing compatibility before committing the BOM.