| Parameters | 
                                                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 32-LQFP | 
                                                                            
                                            | 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 | 72421 | 
                                                                            
                                            | Function | Synchronous | 
                                                                            
                                            | Current - Supply (Max) | 35mA | 
                                                                            
                                            | Memory Size | 576 64 x 9 | 
                                                                            
                                            | Access Time | 6.5ns | 
                                                                            
                                            | Data Rate | 100MHz | 
                                                                            
                                            | Bus Directional | Uni-Directional | 
                                                                            
                                            | Retransmit Capability | No | 
                                                                            
                                            | Programmable Flags Support | Yes | 
                                                                            
                                            | Expansion Type | Depth, Width | 
                                                                            
                                            | RoHS Status | Non-RoHS Compliant | 
                                                                                                    
                            
                         
                                                72421L10PF8 Overview
The 32-LQFP  package contains FIFO memory chip.In terms of packaging, it comes in Tape & Reel (TR) cases.A FIFO chip's memory is 576 64 x 9 , which may be used to store applications and data.Keeping the temperature at 0°C~70°C will ensure reliable operation.Mounting type Surface Mount indicates that the FIFO memory is mounted.A voltage supply of 4.5V~5.5V is needed to operate it.It is a member of the 7200 series .There is a FIFO's maximum operating supply current of 35mA .I believe it belongs to the 72421 family of numbers.
72421L10PF8 Features
576 64 x 9 memory size
7200 series
Best part number of 72421
72421L10PF8 Applications
There are a lot of Renesas Electronics America Inc. 72421L10PF8  FIFOs Memory applications. 
- Medical Monitoring Device
- Smart Meter
- Game Controller
- Notebook
- High-speed disk
- Battery Charger
- A/D output buffers
- Consumer
- Signal processing
- Address mapping