| Parameters | 
                                                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 64-LQFP | 
                                                                            
                                            | Supplier Device Package | 64-TQFP (10x10) | 
                                                                            
                                            | Operating Temperature | 0°C~70°C | 
                                                                            
                                            | Packaging | Tape & Reel (TR) | 
                                                                            
                                            | Series | 7200 | 
                                                                            
                                            | Part Status | Obsolete | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 
                                                                            
                                            | Voltage - Supply | 4.5V~5.5V | 
                                                                            
                                            | Base Part Number | 72235 | 
                                                                            
                                            | Function | Synchronous | 
                                                                            
                                            | Current - Supply (Max) | 60mA | 
                                                                            
                                            | Memory Size | 36K 2K x 18 | 
                                                                            
                                            | Access Time | 10ns | 
                                                                            
                                            | Data Rate | 66.7MHz | 
                                                                            
                                            | Bus Directional | Uni-Directional | 
                                                                            
                                            | Retransmit Capability | No | 
                                                                            
                                            | FWFT Support | No | 
                                                                            
                                            | Programmable Flags Support | Yes | 
                                                                            
                                            | Expansion Type | Depth, Width | 
                                                                            
                                            | RoHS Status | Non-RoHS Compliant | 
                                                                                                    
                            
                         
                                                72235LB15TF8 Overview
The 64-LQFP  package contains FIFO memory chip.It comes in a Tape & Reel (TR) package.Apps and data can be stored in the 36K 2K x 18 memory of the FIFO chip.It is recommended that the temperature be regulated to 0°C~70°C to ensure reliable operation.There is a mounting type of Surface Mount on the FIFO memory.It uses a supply voltage of 4.5V~5.5V  to operate.The 7200 series contains this memory logic.There is a maximum operating current of 60mA in memory IC's supply.I believe it belongs to the 72235 family of numbers.
72235LB15TF8 Features
36K 2K x 18 memory size
7200 series
Best part number of 72235
72235LB15TF8 Applications
There are a lot of Renesas Electronics America Inc. 72235LB15TF8  FIFOs Memory applications. 
- Signal processing
- Laser Receiver System
- General Data Collection Applications at Extreme High-Temperatures
- Desktop Computers
- Wireless
- Microprogramming
- Video Processing
- Portable Information Devices
- Queues for communication systems
- One assembly