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71342LA25PFGI
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Product Detailed Parameters
- Description：IC SRAM 32KBIT PARALLEL 64TQFP
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tray
- Memory Type：Volatile
- Memory Format：SRAM
- Technology：SRAM - Dual Port, Asynchronous
- Memory Size：32Kbit
- Memory Organization：4K x 8
- Memory Interface：Parallel
- Clock Frequency：-
- Write Cycle Time - Word, Page：25ns
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：64-TQFP
- Supplier Device Package：64-TQFP (14x14)
- Access Time：25 ns
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Overview
The Renesas Electronics Corporation 71342LA25PFGI is a high-speed, 32-kbit (4K x 8) dual-port static random-access memory (SRAM). It features fully asynchronous parallel operation with independent access from either port. The device operates on a single 5V power supply and supports battery backup for data retention down to 2V. It is housed in a 64-pin TQFP package and is rated for an industrial temperature range of -40°C to +85°C.
Feature Summary
- True dual-ported memory cells allow simultaneous access to the same memory location from both ports without contention.
- Integrated hardware semaphore logic block provides automatic arbitration between ports using unassigned flags.
- Automatic power-down feature reduces standby current when chip enable and semaphore signals are inactive.
Applications
- Systems requiring simultaneous independent access to shared data buffers
- Network routers and switches needing low-latency packet buffering
- Industrial control systems requiring reliable data exchange between processors
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as older batches may differ. Check moisture sensitivity level handling requirements during assembly. Ensure the specific suffix matches the required package and temperature grade for your design.
Selection Notes
Select this component when true dual-port capability with hardware arbitration is necessary. It is suitable for applications where external arbitration logic would add complexity or latency. Consider the 64-pin TQFP footprint and industrial temperature rating for environmental constraints.
Part Context
This part belongs to the 71342 series of dual-port SRAMs from Renesas. It shares architectural similarities with the 7134 series but includes integrated semaphore logic for easier port management. The 'LA' designation indicates industrial temperature range and battery backup support.
Replacement Considerations
The 71342LA25PFGI8 is listed as an upgrade alternative. Verify pin compatibility and packaging differences before substitution. Other series members like 71342SA25PFI8 are obsolete and require careful evaluation of availability and specifications.
