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Product Detailed Parameters
- Description：IC SRAM 256KBIT PARALLEL 28SOJ
- Series：-
- Mfr：Alliance Memory, Inc.
- Package：Tube
- Memory Type：Volatile
- Memory Format：SRAM
- Technology：SRAM - Asynchronous
- Memory Size：256Kbit
- Memory Organization：32K x 8
- Memory Interface：Parallel
- Write Cycle Time - Word, Page：12ns
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：28-BSOJ (0.300", 7.62mm Width)
- Supplier Device Package：28-SOJ
- Access Time：12 ns
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Overview
The AS7C256A-12JCN is a 256 Kbit (32K x 8) asynchronous static random-access memory manufactured by Alliance Memory. It operates within a supply voltage range of 4.5 V to 5.5 V, with a maximum power consumption of 70 mA. The component features a 12 ns access time and utilizes a parallel interface. It is housed in a 28-pin SOJ package designed for surface mount installation. The device supports single data rate storage and functions reliably across a commercial temperature range from 0°C to +70°C.
Feature Summary
- Asynchronous operation with 12 ns access speed
- Parallel interface for standard memory control
- Single data rate storage architecture
- Surface mount 28-pin SOJ packaging
Applications
- General-purpose volatile data storage
- Embedded system cache memory
- Industrial control unit data buffering
- Consumer electronics temporary storage
Procurement Notes
Verify the specific suffix JCN confirms the SOJ-28 package and commercial temperature grade against official datasheets. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the 5V logic compatibility matches your system design before procurement.
Selection Notes
Select this part when a 32K x 8 organization is required with 12 ns performance. The 5V supply requirement distinguishes it from lower voltage alternatives. The SOJ package suits applications needing through-hole or specific SMT footprints. Verify thermal limits align with the 0°C to +70°C commercial rating.
Part Context
This component belongs to the AS7C256A series of high-speed SRAMs. It provides non-volatile-like speed with volatile capacity. The manufacturer offers variants with different access times and packages. This specific model targets commercial applications requiring reliable 5V operation.
Replacement Considerations
Check for AS7C256A-10JCN for faster 10 ns access in the same package. Consider AS7C256A-15JCN if slower speeds are acceptable. Verify pinout compatibility with other 28-pin SOJ SRAMs from different manufacturers.
