While a dedicated, single datasheet for the "B58944" itself is not available, the component is well-documented under its primary part number, the series. You can use this information to find the relevant documentation. Here are the core specifications you would find in its datasheet:
Signals the chip to capture data on the I/O bus during a write cycle. Power Supply Pins Typically a nec b58944 datasheet
Based on its identical counterpart, the , the B58944 features the following technical characteristics: Feature Specification Memory Type CMOS Static RAM (SRAM) Capacity 256K-bit (32,768 words x 8 bits) Access Time 70 ns (indicated by the "-70" suffix) Package Type 28-pin Plastic SOP (Small Outline Package) Voltage Range 2.7 V to 5.5 V (B version) Data Retention Low VCC data retention down to 2.0 V Key Features for Automotive Use While a dedicated, single datasheet for the "B58944"